{"id":12632,"date":"2026-03-30T01:09:24","date_gmt":"2026-03-30T01:09:24","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12632"},"modified":"2026-03-30T05:42:45","modified_gmt":"2026-03-30T05:42:45","slug":"brown-vs-white-aluminum-oxide-which-should-you-use","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/es\/resource\/blog\/brown-vs-white-aluminum-oxide-which-should-you-use\/","title":{"rendered":"Brown vs White Aluminum Oxide:Which Should You Use?"},"content":{"rendered":"<p><style>\r\n\/* ============================================================\r\n   HLH Cluster Page 02 \u2013 Brown vs White Aluminum Oxide\r\n   Jiangsu Henglihong Technology Co., Ltd.\r\n   March 2026\r\n   ============================================================ *\/\r\n\r\n  @import url('https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:wght@600;700&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;1,400&family=DM+Mono:wght@400;500&display=swap');\r\n\r\n  :root {\r\n    --navy:      #0d1b2a;\r\n    --steel:     #1e3a5f;\r\n    --sky:       #2176ae;\r\n    --sky-dk:    #155d8a;\r\n    --ice:       #e8f4fd;\r\n    --amber:     #d97706;\r\n    --amber-lt:  #fef3c7;\r\n    --brown:     #7c4a1a;\r\n    --brown-lt:  #f9f0e6;\r\n    --brown-bd:  #e8d5bb;\r\n    --wh-blue:   #1e3a8a;\r\n    --wh-lt:     #f0f4ff;\r\n    --wh-bd:     #c7d6f7;\r\n    --green:     #166534;\r\n    --green-lt:  #dcfce7;\r\n    --red:       #991b1b;\r\n    --red-lt:    #fee2e2;\r\n    --sand:      #f5f0e8;\r\n    --white:     #ffffff;\r\n    --gray-50:   #f8f8f6;\r\n    --gray-100:  #efefec;\r\n    --gray-500:  #8a8a80;\r\n    --gray-700:  #454540;\r\n    --radius:    6px;\r\n    --shadow:    0 2px 20px rgba(13,27,42,.07);\r\n    --shadow-lg: 0 8px 40px rgba(13,27,42,.13);\r\n    --font-head: 'Playfair Display', Georgia, serif;\r\n    --font-body: 'DM Sans', system-ui, sans-serif;\r\n    --font-mono: 'DM Mono', monospace;\r\n  }\r\n\r\n  .hlh-c2 *, .hlh-c2 *::before, .hlh-c2 *::after { box-sizing: border-box; margin: 0; padding: 0; }\r\n\r\n  .hlh-c2 {\r\n    font-family: var(--font-body);\r\n    color: var(--gray-700);\r\n    background: var(--white);\r\n    line-height: 1.78;\r\n    font-size: 16px;\r\n    max-width: 900px;\r\n    margin: 0 auto;\r\n  }\r\n\r\n  \/* \u2500\u2500 Headings \u2500\u2500 *\/\r\n  .hlh-c2 h1 {\r\n    font-family: var(--font-head);\r\n    font-size: clamp(1.75rem, 5vw, 2.7rem);\r\n    font-weight: 700; color: var(--white);\r\n    line-height: 1.18; letter-spacing: -.4px;\r\n    margin-bottom: .85rem;\r\n  }\r\n  .hlh-c2 h2 {\r\n    font-family: var(--font-head);\r\n    font-size: clamp(1.3rem, 3vw, 1.75rem);\r\n    font-weight: 600; color: var(--navy);\r\n    line-height: 1.25; margin-top: 2.8rem;\r\n    margin-bottom: .85rem; padding-bottom: .45rem;\r\n    border-bottom: 2px solid var(--gray-100);\r\n  }\r\n  .hlh-c2 h3 {\r\n    font-family: var(--font-body);\r\n    font-size: 1.08rem; font-weight: 600;\r\n    color: var(--steel); margin-top: 1.65rem;\r\n    margin-bottom: .5rem;\r\n  }\r\n  .hlh-c2 p   { margin-bottom: 1rem; }\r\n  .hlh-c2 ul,\r\n  .hlh-c2 ol  { padding-left: 1.35rem; margin-bottom: 1rem; }\r\n  .hlh-c2 li  { margin-bottom: .38rem; }\r\n  .hlh-c2 strong { color: var(--navy); font-weight: 600; }\r\n  .hlh-c2 em     { font-style: italic; }\r\n  .hlh-c2 a      { color: var(--sky); text-decoration: underline; text-underline-offset: 3px; }\r\n  .hlh-c2 a:hover { color: var(--sky-dk); }\r\n\r\n  \/* \u2500\u2500 Hero \u2500\u2500 *\/\r\n  .c2-hero {\r\n    background: linear-gradient(135deg, #0a1628 0%, var(--steel) 52%, #1a4060 100%);\r\n    border-radius: 12px;\r\n    padding: 2.8rem 2.4rem 2.3rem;\r\n    margin-bottom: 2rem;\r\n    position: relative; overflow: hidden;\r\n  }\r\n  .c2-hero::before {\r\n    content: ''; position: absolute;\r\n    top: -40px; right: -40px;\r\n    width: 200px; height: 200px; border-radius: 50%;\r\n    background: rgba(33,118,174,.16); pointer-events: none;\r\n  }\r\n  .c2-hero::after {\r\n    content: ''; position: absolute;\r\n    bottom: -28px; left: 38%;\r\n    width: 140px; height: 140px; border-radius: 50%;\r\n    background: rgba(217,119,6,.09); pointer-events: none;\r\n  }\r\n  .hero-sub {\r\n    font-size: 1.03rem; color: rgba(255,255,255,.82);\r\n    max-width: 640px; line-height: 1.72; margin-bottom: 1.4rem;\r\n  }\r\n  .hero-meta {\r\n    display: flex; flex-wrap: wrap; gap: .5rem;\r\n    font-size: .77rem; font-family: var(--font-mono);\r\n    color: rgba(255,255,255,.58); margin-top: 1rem;\r\n  }\r\n  .hero-meta span {\r\n    background: rgba(255,255,255,.08);\r\n    border: 1px solid rgba(255,255,255,.16);\r\n    border-radius: 20px; padding: .17rem .68rem;\r\n  }\r\n\r\n  \/* \u2500\u2500 Buttons \u2500\u2500 *\/\r\n  .btn-row { display: flex; flex-wrap: wrap; gap: .65rem; }\r\n  .btn {\r\n    display: inline-block; padding: .58rem 1.28rem;\r\n    border-radius: var(--radius); font-size: .87rem;\r\n    font-weight: 600; text-decoration: none;\r\n    border: 2px solid transparent;\r\n    transition: background .17s, border-color .17s, color .17s, transform .12s;\r\n  }\r\n  .btn:hover { transform: translateY(-1px); text-decoration: none; }\r\n  .btn-amber { background: var(--amber); color: var(--white); border-color: var(--amber); }\r\n  .btn-amber:hover { background: #b45309; border-color: #b45309; color: var(--white); }\r\n  .btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.42); }\r\n  .btn-ghost:hover { background: rgba(255,255,255,.1); color: var(--white); }\r\n  .btn-navy  { background: var(--navy); color: var(--white); border-color: var(--navy); }\r\n  .btn-navy:hover { background: var(--steel); border-color: var(--steel); color: var(--white); }\r\n\r\n  \/* \u2500\u2500 TOC \u2500\u2500 *\/\r\n  .toc-box {\r\n    background: var(--sand); border: 1px solid #e2ddd4;\r\n    border-left: 4px solid var(--sky); border-radius: var(--radius);\r\n    padding: 1.2rem 1.45rem; margin-bottom: 2.2rem;\r\n  }\r\n  .toc-title {\r\n    font-size: .74rem; font-weight: 600; letter-spacing: .8px;\r\n    text-transform: uppercase; color: var(--gray-500); margin-bottom: .65rem;\r\n  }\r\n  .toc-box ol { list-style: decimal; padding-left: 1.1rem; }\r\n  .toc-box li { margin-bottom: .26rem; font-size: .9rem; }\r\n  .toc-box a  { color: var(--steel); text-decoration: none; }\r\n  .toc-box a:hover { color: var(--sky); text-decoration: underline; }\r\n\r\n  \/* \u2500\u2500 Quick-answer banner \u2500\u2500 *\/\r\n  .quick-answer {\r\n    border: 1.5px solid var(--sky);\r\n    border-radius: 10px; padding: 1.3rem 1.4rem;\r\n    margin: 1.5rem 0 2rem;\r\n    background: var(--ice);\r\n  }\r\n  .qa-label {\r\n    font-size: .72rem; font-weight: 600; text-transform: uppercase;\r\n    letter-spacing: .7px; color: var(--sky); margin-bottom: .5rem;\r\n  }\r\n  .qa-text { font-size: 1rem; line-height: 1.68; color: var(--navy); font-weight: 500; }\r\n\r\n  \/* \u2500\u2500 Split comparison header \u2500\u2500 *\/\r\n  .grade-header {\r\n    display: grid; grid-template-columns: 1fr 1fr;\r\n    gap: 1rem; margin: 1.5rem 0;\r\n  }\r\n  .grade-card {\r\n    border-radius: 10px; padding: 1.3rem 1.2rem;\r\n    box-shadow: var(--shadow);\r\n  }\r\n  .grade-card.brown {\r\n    background: var(--brown-lt); border: 1.5px solid var(--brown-bd);\r\n  }\r\n  .grade-card.white-g {\r\n    background: var(--wh-lt); border: 1.5px solid var(--wh-bd);\r\n  }\r\n  .grade-badge {\r\n    display: inline-block; font-size: .7rem; font-weight: 600;\r\n    text-transform: uppercase; letter-spacing: .55px;\r\n    border-radius: 20px; padding: .15rem .65rem; margin-bottom: .6rem;\r\n  }\r\n  .badge-brown { background: var(--brown-lt); color: var(--brown); border: 1px solid var(--brown-bd); }\r\n  .badge-white { background: var(--wh-lt); color: var(--wh-blue); border: 1px solid var(--wh-bd); }\r\n  .grade-name  { font-family: var(--font-head); font-size: 1.08rem; font-weight: 600; color: var(--navy); margin-bottom: .45rem; }\r\n  .grade-tagline { font-size: .87rem; color: var(--gray-700); line-height: 1.55; }\r\n\r\n  \/* \u2500\u2500 Info \/ Warning \/ Success boxes \u2500\u2500 *\/\r\n  .info-box {\r\n    background: var(--ice); border-left: 4px solid var(--sky);\r\n    border-radius: 0 var(--radius) var(--radius) 0;\r\n    padding: .9rem 1.1rem; margin: 1.25rem 0;\r\n    font-size: .93rem;\r\n  }\r\n  .warn-box {\r\n    background: var(--amber-lt); border-left: 4px solid var(--amber);\r\n    border-radius: 0 var(--radius) var(--radius) 0;\r\n    padding: .9rem 1.1rem; margin: 1.25rem 0;\r\n    font-size: .93rem;\r\n  }\r\n  .success-box {\r\n    background: var(--green-lt); border-left: 4px solid var(--green);\r\n    border-radius: 0 var(--radius) var(--radius) 0;\r\n    padding: .9rem 1.1rem; margin: 1.25rem 0;\r\n    font-size: .93rem;\r\n  }\r\n\r\n  \/* \u2500\u2500 Main comparison table \u2500\u2500 *\/\r\n  .hlh-table-wrap {\r\n    overflow-x: auto; margin: 1.25rem 0;\r\n    border-radius: var(--radius); box-shadow: var(--shadow);\r\n  }\r\n  .hlh-table { width: 100%; border-collapse: collapse; font-size: .87rem; }\r\n  .hlh-table thead th {\r\n    background: var(--navy); color: var(--white);\r\n    padding: .65rem .9rem; text-align: left;\r\n    font-size: .77rem; font-weight: 500;\r\n    text-transform: uppercase; letter-spacing: .42px;\r\n    white-space: nowrap;\r\n  }\r\n  .hlh-table thead th.th-brown { background: #5a3210; }\r\n  .hlh-table thead th.th-white { background: #1e3a8a; }\r\n  .hlh-table tbody td {\r\n    padding: .62rem .9rem; border-bottom: 1px solid var(--gray-100);\r\n    vertical-align: middle; line-height: 1.55;\r\n  }\r\n  .hlh-table tbody tr:nth-child(even) td { background: var(--gray-50); }\r\n  .hlh-table tbody tr:hover td { background: var(--ice); transition: background .12s; }\r\n  .td-brown { background: #fdf7f0 !important; }\r\n  .td-white { background: #f4f7ff !important; }\r\n\r\n  \/* \u2500\u2500 Decision scenarios \u2500\u2500 *\/\r\n  .scenario-grid {\r\n    display: grid; grid-template-columns: 1fr 1fr;\r\n    gap: 1rem; margin: 1.5rem 0;\r\n  }\r\n  .scenario-card {\r\n    border-radius: 10px; padding: 1.1rem 1.1rem;\r\n    border: 1px solid var(--gray-100);\r\n    background: var(--white); box-shadow: var(--shadow);\r\n  }\r\n  .sc-situation { font-size: .8rem; text-transform: uppercase; letter-spacing: .6px; font-weight: 600; color: var(--gray-500); margin-bottom: .4rem; }\r\n  .sc-verdict {\r\n    display: inline-block; font-size: .8rem; font-weight: 600;\r\n    border-radius: 4px; padding: .15rem .6rem; margin-bottom: .5rem;\r\n  }\r\n  .v-brown { background: var(--brown-lt); color: var(--brown); border: 1px solid var(--brown-bd); }\r\n  .v-white { background: var(--wh-lt); color: var(--wh-blue); border: 1px solid var(--wh-bd); }\r\n  .v-either { background: #f3f0ff; color: #4c1d95; border: 1px solid #ddd6fe; }\r\n  .sc-reason { font-size: .85rem; color: var(--gray-700); line-height: 1.58; }\r\n\r\n  \/* \u2500\u2500 Property comparison bars \u2500\u2500 *\/\r\n  .prop-compare { margin: 1.4rem 0; }\r\n  .prop-row { margin-bottom: 1rem; }\r\n  .prop-label { font-size: .85rem; font-weight: 600; color: var(--navy); margin-bottom: .32rem; }\r\n  .prop-bars  { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }\r\n  .bar-wrap   { }\r\n  .bar-sub    { font-size: .73rem; color: var(--gray-500); margin-bottom: .2rem; font-family: var(--font-mono); }\r\n  .bar-track  { height: 16px; background: var(--gray-100); border-radius: 4px; overflow: hidden; }\r\n  .bar-fill   { height: 100%; border-radius: 4px; display: flex; align-items: center; padding-left: 7px; }\r\n  .bar-val    { font-size: .7rem; font-weight: 600; color: var(--white); font-family: var(--font-mono); white-space: nowrap; }\r\n  .fill-brown { background: linear-gradient(90deg, #7c4a1a, #c47a3a); }\r\n  .fill-white { background: linear-gradient(90deg, #1e3a8a, #3a6abf); }\r\n\r\n  \/* \u2500\u2500 Cost analysis table \u2500\u2500 *\/\r\n  .c-yes  { color: #166534; font-weight: 600; }\r\n  .c-no   { color: #991b1b; font-weight: 600; }\r\n  .c-mid  { color: #92400e; font-weight: 600; }\r\n  .c-note { color: var(--gray-500); font-size: .82rem; }\r\n\r\n  \/* \u2500\u2500 FAQ \u2500\u2500 *\/\r\n  .faq-item { border-bottom: 1px solid var(--gray-100); }\r\n  .faq-q {\r\n    width: 100%; text-align: left; background: none; border: none;\r\n    padding: .9rem 0; font-family: var(--font-body); font-size: .97rem;\r\n    font-weight: 600; color: var(--navy); cursor: pointer;\r\n    display: flex; justify-content: space-between;\r\n    align-items: flex-start; gap: .55rem; line-height: 1.4;\r\n  }\r\n  .faq-q:hover { color: var(--sky); }\r\n  .faq-icon { font-size: 1.2rem; color: var(--sky); flex-shrink: 0; transition: transform .25s; margin-top: .1rem; }\r\n  .faq-a { display: none; padding-bottom: .95rem; font-size: .92rem; line-height: 1.72; }\r\n  .faq-item.open .faq-a    { display: block; }\r\n  .faq-item.open .faq-icon { transform: rotate(45deg); }\r\n\r\n  \/* \u2500\u2500 Section divider \u2500\u2500 *\/\r\n  .hr { border: none; border-top: 1px solid var(--gray-100); margin: 2.3rem 0; }\r\n\r\n  \/* \u2500\u2500 CTA \u2500\u2500 *\/\r\n  .cta-block {\r\n    background: linear-gradient(135deg, var(--navy) 0%, var(--steel) 100%);\r\n    border-radius: 12px; padding: 2.4rem 1.8rem;\r\n    text-align: center; margin-top: 2.8rem;\r\n  }\r\n  .cta-block h2 {\r\n    font-family: var(--font-head); font-size: 1.6rem; font-weight: 600;\r\n    color: var(--white); border: none; margin-top: 0; padding: 0;\r\n  }\r\n  .cta-block p { color: rgba(255,255,255,.82); max-width: 520px; margin: .65rem auto 1.4rem; }\r\n  .cta-block .btn-row { justify-content: center; }\r\n\r\n  \/* \u2500\u2500 Explore more \u2500\u2500 *\/\r\n  .more-links { list-style: none; padding: 0; margin: .75rem 0; }\r\n  .more-links li { padding: .46rem 0; border-bottom: 1px solid var(--gray-100); font-size: .93rem; }\r\n  .more-links li:last-child { border-bottom: none; }\r\n  .more-links a::before { content: \"\u2192  \"; color: var(--sky); font-weight: 600; }\r\n\r\n  \/* \u2500\u2500 Responsive \u2500\u2500 *\/\r\n  @media (max-width: 640px) {\r\n    .c2-hero { padding: 1.7rem 1rem 1.5rem; }\r\n    .hlh-c2 h2 { font-size: 1.28rem; }\r\n    .grade-header  { grid-template-columns: 1fr; }\r\n    .scenario-grid { grid-template-columns: 1fr; }\r\n    .prop-bars     { grid-template-columns: 1fr; }\r\n    .btn-row { flex-direction: column; }\r\n    .btn { text-align: center; }\r\n  }\r\n<\/style><\/p>\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\r\n     CLUSTER 02: Brown vs White Aluminum Oxide \u2013 Which Should You Use?\r\n     Jiangsu Henglihong Technology Co., Ltd.\r\n     March 2026\r\n     \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<div class=\"hlh-c2\"><!-- \u2500\u2500 HERO \u2500\u2500 -->\r\n<div class=\"c2-hero\">\r\n<h1>Brown vs White Aluminum Oxide:<br \/>Which Should You Use?<\/h1>\r\n<p class=\"hero-sub\">A definitive, application-by-application comparison of the two most widely used grades of aluminum oxide blast media \u2014 with specification guidelines, cost analysis, and contamination risk assessment for 12 real-world scenarios.<\/p>\r\n<div class=\"hero-meta\">By Jiangsu Henglihong Technology Co., Ltd.March 2026~4,500 words \u00b7 17 min read<\/div>\r\n<\/div>\r\n<!-- \u2500\u2500 TOC \u2500\u2500 -->\r\n<div class=\"toc-box\">\r\n<div class=\"toc-title\">Table of Contents<\/div>\r\n<ol>\r\n<li><a href=\"#quick-answer\">Quick Answer: Which Grade for Your Application?<\/a><\/li>\r\n<li><a href=\"#what-makes-them-different\">What Makes Brown and White Aluminum Oxide Different?<\/a><\/li>\r\n<li><a href=\"#properties-compared\">Full Properties Comparison<\/a><\/li>\r\n<li><a href=\"#the-iron-contamination-issue\">The Iron Contamination Issue Explained<\/a><\/li>\r\n<li><a href=\"#performance-comparison\">Performance Comparison: Cutting Speed, Profile &amp; Recyclability<\/a><\/li>\r\n<li><a href=\"#cost-analysis\">Cost Analysis: Unit Price vs Total Cost of Ownership<\/a><\/li>\r\n<li><a href=\"#12-scenarios\">12 Application Scenarios: Brown or White?<\/a><\/li>\r\n<li><a href=\"#when-either-works\">When Either Grade Works<\/a><\/li>\r\n<li><a href=\"#specification-writing\">Writing a Correct Procurement Specification<\/a><\/li>\r\n<li><a href=\"#faq\">Preguntas frecuentes<\/a><\/li>\r\n<\/ol>\r\n<\/div>\r\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 1 \u2013 Quick Answer         --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"quick-answer\">1. Quick Answer: Which Grade for Your Application?<\/h2>\r\n<p>The most common procurement mistake in aluminum oxide blast media is specifying brown fused grade on a substrate that requires white \u2014 or paying the white-grade premium on a carbon steel job where brown is perfectly correct. The decision logic is simpler than most buyers assume:<\/p>\r\n<div class=\"quick-answer\">\r\n<div class=\"qa-label\">Core decision rule<\/div>\r\n<div class=\"qa-text\">Use <strong>\u00d3xido de aluminio fundido marr\u00f3n<\/strong> when blasting carbon steel, cast iron, concrete, or any ferrous substrate where trace iron contamination from the abrasive is inconsequential \u2014 and cost efficiency is the priority.<br \/><br \/>Use <strong>\u00d3xido de aluminio fundido blanco<\/strong> whenever the substrate is iron-sensitive (stainless steel, aluminum, titanium), the service environment is corrosion-critical (offshore, food contact, pharmaceutical, medical), or the governing specification explicitly prohibits iron contamination.<\/div>\r\n<\/div>\r\n<p>The rest of this article gives you the full technical and commercial picture \u2014 including the precise mechanisms behind iron contamination failure, a side-by-side properties comparison, and a worked cost analysis \u2014 so you can specify with confidence and defend that specification to a client or inspector. For the broader context of aluminum oxide blast media selection, see our complete reference: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-blast-media-complete-buyers-guide\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Blast Media: The Complete Buyer&#8217;s Guide<\/a>.<\/p>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 2 \u2013 What Makes Them Different --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"what-makes-them-different\">2. What Makes Brown and White Aluminum Oxide Different?<\/h2>\r\n<p>Both grades are synthetic aluminum oxide (Al\u2082O\u2083) produced by electrically fusing high-temperature feedstock in arc furnaces, and both share the angular grain morphology and Mohs 9 hardness that make aluminum oxide the world&#8217;s most widely used industrial abrasive. The differences arise from the purity of the raw material used and what impurities are retained \u2014 or deliberately removed \u2014 during production.<\/p>\r\n<div class=\"grade-header\">\r\n<div class=\"grade-card brown\">\r\n<div class=\"grade-badge badge-brown\">Brown Fused (BFAO)<\/div>\r\n<div class=\"grade-name\">\u00d3xido de aluminio fundido marr\u00f3n<\/div>\r\n<div class=\"grade-tagline\">Produced from standard-grade bauxite ore. The naturally occurring titanium dioxide (TiO\u2082) content \u2014 1.5\u20133.8% \u2014 is retained in the crystal lattice, acting as a toughening agent that makes brown grade the more impact-resistant and economical choice for heavy-duty blasting work.<\/div>\r\n<\/div>\r\n<div class=\"grade-card white-g\">\r\n<div class=\"grade-badge badge-white\">White Fused (WFAO)<\/div>\r\n<div class=\"grade-name\">\u00d3xido de aluminio fundido blanco<\/div>\r\n<div class=\"grade-tagline\">Produced from calcined, high-purity alumina (Bayer-process Al\u2082O\u2083). The refining process removes iron, titanium, silica, and other impurities to &lt; 0.05% Fe\u2082O\u2083 and &lt; 0.1% SiO\u2082 \u2014 yielding a chemically pure abrasive essential for contamination-sensitive substrates and precision applications.<\/div>\r\n<\/div>\r\n<\/div>\r\n<h3>The Production Difference<\/h3>\r\n<p>Brown fused aluminum oxide starts from raw bauxite, an ore that naturally contains iron oxides, titanium dioxide, and silica alongside the alumina. The electric arc fusion process drives off moisture and some volatile impurities but retains the TiO\u2082 and a portion of the iron. White fused aluminum oxide begins with Bayer-process alumina \u2014 a refined, high-purity aluminum hydroxide that has already been chemically stripped of most of its impurity load before it ever enters the fusion furnace. The result is a product with greater than 99.5% Al\u2082O\u2083 purity and analytically negligible iron content.<\/p>\r\n<p>This single difference in feedstock purity propagates into every downstream performance and specification difference between the two grades.<\/p>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 3 \u2013 Properties Compared  --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"properties-compared\">3. Full Properties Comparison<\/h2>\r\n<div class=\"hlh-table-wrap\">\r\n<table class=\"hlh-table\">\r\n<thead>\r\n<tr>\r\n<th>Property<\/th>\r\n<th class=\"th-brown\">Brown Fused (BFAO)<\/th>\r\n<th class=\"th-white\">White Fused (WFAO)<\/th>\r\n<th>Test Method<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Al\u2082O\u2083 Purity<\/strong><\/td>\r\n<td class=\"td-brown\">94\u201397%<\/td>\r\n<td class=\"td-white\">\u2265 99.5%<\/td>\r\n<td>XRF \/ Wet chemistry<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>TiO\u2082 Content<\/strong><\/td>\r\n<td class=\"td-brown\">1.5\u20133.8%<\/td>\r\n<td class=\"td-white\">&lt; 0.05%<\/td>\r\n<td>XRF<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Fe\u2082O\u2083 (Free Iron)<\/strong><\/td>\r\n<td class=\"td-brown\">0.2\u20131.5%<\/td>\r\n<td class=\"td-white\">&lt; 0.05%<\/td>\r\n<td>XRF<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>SiO\u2082<\/strong><\/td>\r\n<td class=\"td-brown\">0.5\u20132.0%<\/td>\r\n<td class=\"td-white\">&lt; 0.10%<\/td>\r\n<td>XRF<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Na\u2082O<\/strong><\/td>\r\n<td class=\"td-brown\">&lt; 0.5%<\/td>\r\n<td class=\"td-white\">&lt; 0.35%<\/td>\r\n<td>XRF<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Dureza Mohs<\/strong><\/td>\r\n<td class=\"td-brown\">8.9\u20139.0<\/td>\r\n<td class=\"td-white\">9.0<\/td>\r\n<td>ASTM E18<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Vickers Microhardness<\/strong><\/td>\r\n<td class=\"td-brown\">1,800\u20132,000 HV<\/td>\r\n<td class=\"td-white\">2,000\u20132,200 HV<\/td>\r\n<td>ASTM E384<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Densidad real<\/strong><\/td>\r\n<td class=\"td-brown\">3.90\u20133.95 g\/cm\u00b3<\/td>\r\n<td class=\"td-white\">3.93\u20133.97 g\/cm\u00b3<\/td>\r\n<td>ASTM B923<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Densidad aparente<\/strong><\/td>\r\n<td class=\"td-brown\">1.75\u20131.95 g\/cm\u00b3<\/td>\r\n<td class=\"td-white\">1.60\u20131.80 g\/cm\u00b3<\/td>\r\n<td>ISO 8130-4<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Grain Morphology<\/strong><\/td>\r\n<td class=\"td-brown\">Angular \/ blocky<\/td>\r\n<td class=\"td-white\">Angular \/ sharp-edged<\/td>\r\n<td>SEM<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Grain Toughness<\/strong><\/td>\r\n<td class=\"td-brown\">Higher \u2014 resists fracture<\/td>\r\n<td class=\"td-white\">More friable \u2014 self-sharpens<\/td>\r\n<td>Impact test<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Punto de fusi\u00f3n<\/strong><\/td>\r\n<td class=\"td-brown\">~2,040 \u00b0C<\/td>\r\n<td class=\"td-white\">~2,050 \u00b0C<\/td>\r\n<td>\u2014<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Color<\/strong><\/td>\r\n<td class=\"td-brown\">Dark brown \/ reddish-brown<\/td>\r\n<td class=\"td-white\">Pure white<\/td>\r\n<td>Visual<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Moisture (&lt;)<\/strong><\/td>\r\n<td class=\"td-brown\">0.3%<\/td>\r\n<td class=\"td-white\">0.15%<\/td>\r\n<td>ISO 6344-3<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Recyclability (closed loop)<\/strong><\/td>\r\n<td class=\"td-brown\">4\u20138 cycles<\/td>\r\n<td class=\"td-white\">5\u201310 cycles<\/td>\r\n<td>Production trial<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Relative Unit Cost<\/strong><\/td>\r\n<td class=\"td-brown\">Baseline (1\u00d7)<\/td>\r\n<td class=\"td-white\">1.3\u20131.6\u00d7 brown<\/td>\r\n<td>Market pricing<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<!-- Property comparison bars -->\r\n<div class=\"prop-compare\">\r\n<div class=\"prop-row\">\r\n<div class=\"prop-label\">Al\u2082O\u2083 Purity<\/div>\r\n<div class=\"prop-bars\">\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Brown Fused<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-brown\" style=\"width: 95.5%;\"><span class=\"bar-val\">~95.5%<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Fundido blanco<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-white\" style=\"width: 99.7%;\"><span class=\"bar-val\">&gt;99.5%<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"prop-row\">\r\n<div class=\"prop-label\">Grain Toughness (impact resistance)<\/div>\r\n<div class=\"prop-bars\">\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Brown Fused<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-brown\" style=\"width: 88%;\"><span class=\"bar-val\">Higher<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Fundido blanco<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-white\" style=\"width: 68%;\"><span class=\"bar-val\">Moderado<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"prop-row\">\r\n<div class=\"prop-label\">Surface hardness (Vickers HV)<\/div>\r\n<div class=\"prop-bars\">\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Brown Fused<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-brown\" style=\"width: 86%;\"><span class=\"bar-val\">~1,900 HV<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Fundido blanco<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-white\" style=\"width: 96%;\"><span class=\"bar-val\">~2,100 HV<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"prop-row\">\r\n<div class=\"prop-label\">Recyclability (closed-loop cycles)<\/div>\r\n<div class=\"prop-bars\">\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Brown Fused<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-brown\" style=\"width: 60%;\"><span class=\"bar-val\">4\u20138 cycles<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"bar-wrap\">\r\n<div class=\"bar-sub\">Fundido blanco<\/div>\r\n<div class=\"bar-track\">\r\n<div class=\"bar-fill fill-white\" style=\"width: 75%;\"><span class=\"bar-val\">5\u201310 cycles<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 4 \u2013 Iron Contamination   --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"the-iron-contamination-issue\">4. The Iron Contamination Issue Explained<\/h2>\r\n<p>Iron contamination is the most consequential technical difference between brown and white fused aluminum oxide \u2014 and it is frequently misunderstood. Many users assume that iron particles from brown-grade abrasive simply sit loosely on the blasted surface and can be removed by air-blowing or wiping. This assumption is wrong, and it leads to expensive coating failures and warranty disputes.<\/p>\r\n<h3>What Actually Happens During Blasting<\/h3>\r\n<p>When a brown fused aluminum oxide grain impacts a metal surface at blast velocities (typically 60\u2013150 m\/s depending on pressure and grit size), the grain fractures on impact \u2014 and so do the tiny iron oxide inclusions distributed throughout its crystal matrix. Fractured iron-bearing particles are driven into the substrate surface at high velocity, embedding themselves in the freshly created anchor profile at depths of 1\u20135 \u00b5m below the peak of each surface irregularity. These embedded particles are not removable by compressed air blowing, solvent wiping, or even re-blasting with the same grade of media.<\/p>\r\n<h3>The Failure Mechanism on Stainless Steel<\/h3>\r\n<p>Stainless steel&#8217;s corrosion resistance depends entirely on a continuous, adherent chromium oxide passive film approximately 1\u20133 nm thick on the surface. Embedded iron particles from brown-grade blasting create micro-galvanic cells at the points of iron-steel contact, where the iron \u2014 being anodic relative to the passive stainless matrix \u2014 begins to corrode preferentially. The corrosion product (rust) propagates beneath the applied coating, breaking adhesion and creating the characteristic &#8220;rust halo&#8221; or &#8220;rust bleed&#8221; pattern around each contamination site. This failure can appear within weeks of coating application in aggressive environments (marine, chemical, food processing) or may take months in mild conditions \u2014 but it is invariably progressive and cannot be stopped without stripping and re-blasting with iron-free media.<\/p>\r\n<div class=\"warn-box\"><strong>Field case \u2014 stainless steel pipework:<\/strong> A common scenario in food and beverage plant construction: a contractor blasts stainless steel pipework with brown fused aluminum oxide (the same media used the previous day on carbon steel structural members), applies an approved food-contact epoxy coating, and passes initial inspection. Within four to six months of commissioning, rust halos appear at hundreds of points across the pipe surfaces. The root cause is invariably iron contamination from the abrasive. Re-work typically involves complete coating removal, chemical passivation, re-blasting with white fused aluminum oxide, and re-coating \u2014 at two to five times the original surface preparation cost.<\/div>\r\n<h3>The Failure Mechanism on Aluminum Alloys<\/h3>\r\n<p>Aluminum alloys do not form rust in the same way as steel, but iron contamination from brown-grade abrasive creates a different problem: galvanic corrosion pitting at iron-aluminum contact points. In aerospace and marine applications, this pitting can initiate stress-corrosion cracking in high-strength alloys (7075, 2024) under service loads. Aerospace specifications (AMS 2431, Boeing D6-17487) explicitly prohibit iron-bearing abrasives on aluminum airframe components for this reason.<\/p>\r\n<h3>Iron Contamination Testing<\/h3>\r\n<p>The standard test for iron contamination on a blasted surface is the ferroxyl test (also called the Ferrozine or potassium ferricyanide wipe test), which uses a reactive indicator solution applied to the surface that turns blue in the presence of soluble iron. Most coating inspection protocols for stainless steel require a clean ferroxyl test before coating application when blasting history is uncertain. White fused aluminum oxide consistently passes this test when used on a freshly blasted, previously uncontaminated surface.<\/p>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 5 \u2013 Performance          --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"performance-comparison\">5. Performance Comparison: Cutting Speed, Profile &amp; Recyclability<\/h2>\r\n<p>Setting aside the iron contamination issue \u2014 on substrates where it is genuinely not relevant, such as carbon steel \u2014 the performance differences between brown and white fused aluminum oxide are more nuanced than the simple &#8220;white is better&#8221; assumption sometimes made by buyers who associate higher purity with higher performance. The reality depends on the application.<\/p>\r\n<h3>Cutting Speed<\/h3>\r\n<p>Brown fused aluminum oxide&#8217;s higher TiO\u2082-driven toughness means its grains survive more impact cycles before fracturing, delivering more kinetic-energy cutting events per kilogram of media charged to the blast system. On equivalent grit sizes at equivalent blast pressures, brown grade typically removes surface contaminants at a rate 5\u201315% faster than white grade on carbon steel substrates. White grade&#8217;s slightly lower toughness means grains fracture earlier in the impact cycle \u2014 generating a larger fine-particle fraction that contributes less to profile generation and more to dust.<\/p>\r\n<h3>Anchor Profile Consistency<\/h3>\r\n<p>White fused aluminum oxide&#8217;s higher Vickers microhardness (2,000\u20132,200 HV vs 1,800\u20132,000 HV for brown) translates to sharper cutting edges at the micro-scale \u2014 which is why it is preferred for precision applications requiring a tight, consistent anchor profile on hard substrates. In practice, for general carbon steel preparation, the profile depth difference between equivalent grit sizes of brown and white grade is within measurement variability (\u00b15 \u00b5m) and is not specification-significant.<\/p>\r\n<h3>Recyclability and Media Life<\/h3>\r\n<p>White fused aluminum oxide achieves slightly more recycle cycles (5\u201310 vs 4\u20138 for brown) in closed-loop blast systems, reflecting its higher hardness. However, the primary wear mechanism that terminates media service life is different for each grade: brown grade is limited by progressive particle fracture reducing the D50 below the minimum useful size, while white grade is additionally limited by potential purity degradation from substrate pickup \u2014 relevant in applications where the media charge becomes contaminated with substrate material over multiple cycles. For a full analysis of recyclability economics, see our guide: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/is-aluminum-oxide-blast-media-reusable-how-many-times\/\" target=\"_blank\" rel=\"noopener\">Is Aluminum Oxide Blast Media Reusable? How Many Times?<\/a><\/p>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 6 \u2013 Cost Analysis        --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"cost-analysis\">6. Cost Analysis: Unit Price vs Total Cost of Ownership<\/h2>\r\n<p>The 30\u201360% unit price premium of white fused over brown fused aluminum oxide deters some buyers from specifying white grade even when the application technically requires it \u2014 often with expensive consequences. Equally, some buyers default to white grade on all applications &#8220;to be safe,&#8221; paying a premium that the application does not need and that their specification does not require. A structured total cost of ownership (TCO) analysis prevents both errors.<\/p>\r\n<div class=\"hlh-table-wrap\">\r\n<table class=\"hlh-table\">\r\n<thead>\r\n<tr>\r\n<th>Cost Factor<\/th>\r\n<th class=\"th-brown\">Brown Fused (BFAO)<\/th>\r\n<th class=\"th-white\">White Fused (WFAO)<\/th>\r\n<th>Notes<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td><strong>Unit purchase price<\/strong><\/td>\r\n<td class=\"td-brown\">Baseline (1\u00d7)<\/td>\r\n<td class=\"td-white\">1.3\u20131.6\u00d7 brown<\/td>\r\n<td>Varies by grit size and order volume<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Recycle cycles (closed loop)<\/strong><\/td>\r\n<td class=\"td-brown\">4\u20138<\/td>\r\n<td class=\"td-white\">5\u201310<\/td>\r\n<td>White amortizes unit cost premium over more cycles<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Net media cost per m\u00b2<\/strong><\/td>\r\n<td class=\"td-brown\">Lower on carbon steel<\/td>\r\n<td class=\"td-white\">Comparable after recycling<\/td>\r\n<td>Gap narrows significantly in closed-loop systems<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Risk of re-work cost<\/strong><\/td>\r\n<td class=\"td-brown\"><span class=\"c-yes\">Zero on carbon steel<\/span><\/td>\r\n<td class=\"td-white\"><span class=\"c-yes\">Zero on all substrates<\/span><\/td>\r\n<td>Brown on SS\/Al creates re-work risk worth quantifying<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Contamination re-work (if wrong grade used)<\/strong><\/td>\r\n<td class=\"td-brown\"><span class=\"c-no\">2\u20135\u00d7 original prep cost on sensitive substrates<\/span><\/td>\r\n<td class=\"td-white\"><span class=\"c-yes\">Not applicable<\/span><\/td>\r\n<td>Re-blasting + re-coating + passivation on stainless<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Regulatory compliance risk<\/strong><\/td>\r\n<td class=\"td-brown\"><span class=\"c-mid\">High for aerospace \/ medical \/ food<\/span><\/td>\r\n<td class=\"td-white\"><span class=\"c-yes\">Low \u2014 meets all standards<\/span><\/td>\r\n<td>AMS 2431 and EN ISO 11126-7 require iron-free media<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Generaci\u00f3n de polvo<\/strong><\/td>\r\n<td class=\"td-brown\">Slightly higher<\/td>\r\n<td class=\"td-white\">Slightly lower<\/td>\r\n<td>White is more friable but purer \u2014 lower silica fraction<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<div class=\"success-box\"><strong>TCO conclusion:<\/strong> On carbon steel general preparation in a closed-loop system, brown fused aluminum oxide delivers a genuinely lower total cost. On stainless steel, aluminum, titanium, or any contamination-sensitive application, white fused aluminum oxide is invariably the lower total-cost option once the risk-adjusted cost of potential re-work and regulatory non-compliance is included in the calculation.<\/div>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 7 \u2013 12 Scenarios         --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"12-scenarios\">7. Twelve Application Scenarios: Brown or White?<\/h2>\r\n<p>The following decision matrix covers the twelve most common industrial blasting scenarios. Each verdict is based on the substrate material, service environment, governing specification, and the contamination risk profile described in Section 4.<\/p>\r\n<div class=\"scenario-grid\">\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 1<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Structural carbon steel \u2014 bridge \/ industrial building<\/strong>\r\n<div class=\"sc-verdict v-brown\">Use Brown Fused<\/div>\r\n<div class=\"sc-reason\">Substrate is ferrous \u2014 no contamination risk. Brown grade&#8217;s higher toughness and lower cost deliver best TCO at F24\u2013F36. SSPC-SP 10 achievable at 70\u201390 PSI.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 2<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Stainless steel pipework \u2014 food &amp; beverage plant<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">Iron contamination risk is critical. FDA and EHEDG standards for food-contact surfaces require iron-free abrasive. White grade at F60\u2013F80 is mandatory. Ferroxyl test required before coating.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 3<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Offshore oil &amp; gas carbon steel structure<\/strong>\r\n<div class=\"sc-verdict v-brown\">Use Brown Fused<\/div>\r\n<div class=\"sc-reason\">Carbon steel substrate in a corrosive environment needs maximum profile depth for high-build epoxy systems. F16\u2013F24 brown at 80\u2013100 PSI for SSPC-SP 5 or SP 10. Iron contamination not a concern on carbon steel.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 4<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Aluminum aircraft component \u2014 MRO shop<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">AMS 2431 and Boeing D6-17487 prohibit iron-bearing abrasives on aluminum airframe. White fused at F60\u2013F120, 30\u201350 PSI. Substrate softness limits pressure \u2014 coarser grit causes distortion on thin sections.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 5<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Carbon steel pipeline \u2014 internal coating<\/strong>\r\n<div class=\"sc-verdict v-brown\">Use Brown Fused<\/div>\r\n<div class=\"sc-reason\">High-volume, cost-sensitive application on ferrous substrate. F24\u2013F36 brown delivers 50\u201380 \u00b5m profiles for FBE or liquid epoxy systems. Internal blast equipment (centrifugal or direct pressure) suits brown grade&#8217;s higher density.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 6<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Titanium orthopedic implant \u2014 surface preparation<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">ISO 13485 medical device supply chain. Zero iron tolerance. White grade at F120\u2013F220 creates the controlled micro-roughness required for osseointegration. Traceability documentation (lot CoA) required for medical procurement.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 7<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Decorative glass etching \u2014 artist or signage shop<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">Color neutrality required \u2014 brown grade imparts a light tan tint to frosted glass surfaces. White grade at F120\u2013F220, 25\u201340 PSI produces clean, neutral matte finish. See our full guide: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-for-glass-etching-frosting\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide for Glass Etching &amp; Frosting<\/a>.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 8<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Cast iron pump housing \u2014 industrial MRO<\/strong>\r\n<div class=\"sc-verdict v-brown\">Use Brown Fused<\/div>\r\n<div class=\"sc-reason\">Cast iron is ferrous \u2014 iron contamination irrelevant. Brown grade at F24\u2013F46 removes existing paint, mill scale, and casting skin effectively. Higher toughness handles the hard, abrasive nature of cast iron surfaces well.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 9<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Duplex stainless heat exchanger \u2014 chemical plant<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">Duplex stainless in chemical service has zero tolerance for iron initiation of chloride stress-corrosion cracking. White fused at F46\u2013F80. Specify ferroxyl test post-blast. Document abrasive CoA as part of ITP records.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 10<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Epoxy floor coating \u2014 anti-slip aggregate<\/strong>\r\n<div class=\"sc-verdict v-either\">Either Grade Works<\/div>\r\n<div class=\"sc-reason\">Incorporated into coating rather than blasted off. Brown grade F46\u2013F80 is cost-effective for industrial floors. White grade is preferred for light-colored or hygienic environments (pharma, food) where brown pigment would be visible in the finished surface.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 11<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Galvanized steel \u2014 sweep blast before overcoating<\/strong>\r\n<div class=\"sc-verdict v-either\">Either Grade Works<\/div>\r\n<div class=\"sc-reason\">Light sweep blast (30\u201350 PSI, F46\u2013F80) to dull the zinc surface and improve overcoat adhesion. The zinc layer is not removed. Iron contamination risk from brown grade is isolated from the steel substrate by the zinc layer \u2014 either grade acceptable unless the overcoating specification states otherwise.<\/div>\r\n<\/div>\r\n<div class=\"scenario-card\">\r\n<div class=\"sc-situation\">Scenario 12<\/div>\r\n<strong style=\"font-size: .93rem; color: var(--navy); display: block; margin-bottom: .3rem;\">Thermal spray (HVOF) bond coat prep on steel<\/strong>\r\n<div class=\"sc-verdict v-white\">Use White Fused<\/div>\r\n<div class=\"sc-reason\">HVOF sprayed carbide and MCrAlY coatings on industrial components require a clean, uncontaminated anchor profile. Iron particles from brown grade can become incorporated in the bond coat, creating corrosion initiation points and reducing coating adhesion. White grade at F24\u2013F36 is the standard specification in thermal spray shops.<\/div>\r\n<\/div>\r\n<\/div>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 8 \u2013 When Either Works    --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"when-either-works\">8. When Either Grade Works<\/h2>\r\n<p>Several application types genuinely accommodate either grade, and the choice should then default to cost efficiency \u2014 meaning brown fused aluminum oxide in most cases. The following criteria define when either grade is technically acceptable:<\/p>\r\n<ul>\r\n<li><strong>The substrate is ferrous (carbon steel, cast iron, tool steel)<\/strong> and iron contamination from the abrasive is indistinguishable from the substrate&#8217;s own iron content.<\/li>\r\n<li><strong>The governing specification does not explicitly restrict iron content<\/strong> of the blast media \u2014 always check the coating manufacturer&#8217;s PDS and any project-specific inspection test plan (ITP) before defaulting to brown grade.<\/li>\r\n<li><strong>The service environment does not create conditions for galvanic corrosion<\/strong> between embedded iron particles and the substrate material.<\/li>\r\n<li><strong>The color of residual media dust<\/strong> is not a quality criterion \u2014 in some light-colored coating systems applied over very light-colored substrates, residual brown dust is visible and unacceptable, requiring white grade even on technically acceptable substrates.<\/li>\r\n<\/ul>\r\n<div class=\"info-box\"><strong>When you are unsure:<\/strong> If the substrate material or service environment is ambiguous, specify white fused aluminum oxide. The price premium over brown grade is modest relative to the cost of a contamination re-work, and white grade performs equivalently to brown on all substrates where brown is appropriate.<\/div>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 9 \u2013 Specification Writing --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"specification-writing\">9. Writing a Correct Procurement Specification<\/h2>\r\n<p>A vague specification \u2014 &#8220;aluminum oxide blast media, F36&#8221; \u2014 leaves the grade unspecified and exposes the project to a supplier delivering the lower-cost brown grade regardless of substrate requirements. A correctly written specification prevents substitution and provides a clear quality acceptance criterion. Here is the minimum specification language for each grade:<\/p>\r\n<h3>Brown Fused Aluminum Oxide Specification Template<\/h3>\r\n<div class=\"info-box\" style=\"font-family: var(--font-mono); font-size: .82rem; line-height: 1.85;\">Abrasive blast media: Brown Fused Aluminum Oxide (BFAO)<br \/>Grade: FEPA F[XX] (specify grit size)<br \/>Al\u2082O\u2083 purity: minimum 94%<br \/>Fe\u2082O\u2083: maximum 1.5%<br \/>SiO\u2082: maximum 2.0%<br \/>Moisture: maximum 0.3%<br \/>Particle size distribution: to FEPA 42-2:2006 F-grits tolerance<br \/>Documentation required: Lot-specific Certificate of Analysis (CoA)<br \/>Standard: EN ISO 11126-7 or equivalent<\/div>\r\n<h3>White Fused Aluminum Oxide Specification Template<\/h3>\r\n<div class=\"info-box\" style=\"font-family: var(--font-mono); font-size: .82rem; line-height: 1.85;\">Abrasive blast media: White Fused Aluminum Oxide (WFAO)<br \/>Grade: FEPA F[XX] (specify grit size)<br \/>Al\u2082O\u2083 purity: minimum 99.5%<br \/>Fe\u2082O\u2083: maximum 0.05%<br \/>SiO\u2082: maximum 0.10%<br \/>Moisture: maximum 0.15%<br \/>Particle size distribution: to FEPA 42-2:2006 F-grits tolerance<br \/>Documentation required: Lot-specific Certificate of Analysis (CoA)<br \/>Post-blast verification: Ferroxyl test (pass required before coating)<br \/>Standard: EN ISO 11126-7 or equivalent; AMS 2431 (if aerospace)<\/div>\r\n<p>For grit size selection guidance to complete the [XX] field in either template, refer to our engineering reference: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-grit-size-chart-selection-guide\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Grit Size Chart &amp; Selection Guide<\/a>.<\/p>\r\n<hr class=\"hr\" \/><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 --><!-- SECTION 10 \u2013 FAQ                 --><!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\r\n<h2 id=\"faq\">10. Frequently Asked Questions<\/h2>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Can I clean a blasted surface to remove iron contamination from brown grade before applying coating? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>No \u2014 not reliably. Compressed air blowing, solvent wiping, and water rinsing remove loose surface particles but cannot extract iron oxide particles that have been driven into the anchor profile valleys at blast velocity. The only effective remediation is to re-blast the contaminated surface with white fused aluminum oxide to physically remove the upper layer of contaminated metal, followed by a ferroxyl test to confirm absence of residual iron. Chemical passivation (typically with citric acid or nitric acid solution) can deactivate surface iron on stainless steel but does not remove the embedded particles \u2014 it is a supplementary step, not a replacement for re-blasting with the correct grade.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Is it safe to use the same blast equipment for both brown and white grade without cleaning between grades? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>No \u2014 and this is a frequent source of contamination failures. Blast cabinets, hoppers, and recovery systems retain residual media in corners, reclaim ducts, and classifier screens. If a cabinet is used for brown fused aluminum oxide and then loaded with white grade without a thorough purge and clean, the residual brown media contaminates the white charge. For contamination-sensitive applications (stainless steel, aerospace, medical), either dedicate separate equipment exclusively to white grade, or perform a verified equipment clean-out \u2014 including running one full charge of white grade to purge the system and discarding it before proceeding to production blasting.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Does white fused aluminum oxide produce a finer surface finish than brown at the same grit size? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>At the same FEPA grit designation, both grades produce anchor profiles within the same indicative Rz range on carbon steel substrates \u2014 the particle size distribution governs the profile, not the grade. The practical difference is that white grade, being slightly more friable, generates a marginally higher fine-particle fraction during blasting, which means its effective D50 drops slightly faster over the recycle life of the media charge. In terms of initial surface finish on first-pass blasting, the profiles are within measurement variability. White grade&#8217;s advantage for precision work comes from its chemical purity and color neutrality, not from a finer profile per se.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Why does white fused aluminum oxide cost more than brown? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>The price premium reflects the more expensive feedstock and the additional processing required. Brown fused aluminum oxide is made from standard bauxite ore \u2014 a relatively inexpensive and widely available raw material. White fused aluminum oxide is made from Bayer-process alumina, which has already been chemically refined to remove iron, silica, and other impurities before it enters the fusion furnace. The Bayer refining process adds significant energy and chemical processing cost before the alumina ever reaches the fusion stage. Additionally, the stricter purity requirements for white grade demand tighter quality control and more frequent testing throughout production, adding overhead cost. The resulting 30\u201360% price premium is a reflection of genuinely higher production cost, not a premium-brand markup.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Is brown fused aluminum oxide banned anywhere due to iron content? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>Brown fused aluminum oxide is not banned anywhere as a product \u2014 it is a widely used and regulated industrial abrasive. However, specific application standards prohibit its use on certain substrates. AMS 2431 (aerospace blasting), Boeing D6-17487, and most MRO specifications for aluminum and titanium airframe components explicitly prohibit iron-bearing abrasives. Medical device manufacturing standards under ISO 13485 and FDA 21 CFR typically require documentation confirming iron-free abrasives for implant surface preparation. Food-contact stainless steel specifications under EU Regulation 1935\/2004 and FDA standards do not enumerate specific abrasive requirements, but the resulting contamination failure (rust on food-contact surfaces) creates regulatory non-compliance \u2014 effectively mandating iron-free media for responsible contractors.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"faq-item\"><button class=\"faq-q\"> Can I mix brown and white fused aluminum oxide to reduce cost on stainless steel jobs? <span class=\"faq-icon\">+<\/span> <\/button>\r\n<div class=\"faq-a\">\r\n<p>No. Any admixture of brown fused aluminum oxide in a media charge intended for stainless steel, aluminum, or titanium substrates introduces the iron contamination risk described in Section 4. The contamination failure mechanism operates at the individual grain level \u2014 even a small percentage of brown-grade grains in an otherwise white charge can embed enough iron to cause corrosion failure in sensitive service environments. There is no recognized standard that permits a defined blend of brown and white for contamination-sensitive applications. If cost is a concern, use white grade at a higher grit size (which requires less media per square meter treated) rather than mixing grades.<\/p>\r\n<\/div>\r\n<\/div>\r\n<!-- \u2500\u2500 CTA \u2500\u2500 -->\r\n<div class=\"cta-block\">\r\n<h2>Need the Right Grade for Your Project?<\/h2>\r\n<p>Jiangsu Henglihong Technology supplies both brown fused and white fused aluminum oxide abrasives to industrial customers worldwide, with full Certificate of Analysis documentation on every shipment and ISO 9001:2015 quality management.<\/p>\r\n<div class=\"btn-row\"><a class=\"btn btn-amber\" href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Quote<\/a> <a class=\"btn btn-ghost\" href=\"https:\/\/hlh-js.com\/products\/\" target=\"_blank\" rel=\"noopener\">View Products<\/a><\/div>\r\n<\/div>\r\n<!-- \u2500\u2500 Explore More \u2500\u2500 -->\r\n<h2 style=\"margin-top: 2.8rem;\">Related Resources<\/h2>\r\n<p>Continue your research with these guides from the Henglihong resource library:<\/p>\r\n<ul class=\"more-links\">\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-blast-media-complete-buyers-guide\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Blast Media: The Complete Buyer&#8217;s Guide<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-grit-size-chart-selection-guide\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Grit Size Chart &amp; Selection Guide<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-vs-garnet-blast-media-full-comparison\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide vs Garnet Blast Media: Full Comparison<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-choose-aluminum-oxide-blast-media-for-steel-surfaces\/\" target=\"_blank\" rel=\"noopener\">How to Choose Aluminum Oxide Blast Media for Steel Surfaces<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-for-glass-etching-frosting\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide for Glass Etching &amp; Frosting<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/is-aluminum-oxide-blast-media-reusable-how-many-times\/\" target=\"_blank\" rel=\"noopener\">Is Aluminum Oxide Blast Media Reusable? How Many Times?<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-blast-media-for-aerospace-medical\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Blast Media for Aerospace &amp; Medical<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/bulk-aluminum-oxide-blast-media-wholesale-pricing-rfq\/\" target=\"_blank\" rel=\"noopener\">Bulk Aluminum Oxide Blast Media \u2013 Wholesale Pricing &amp; RFQ<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-anti-slip-additive-for-floor-coatings\/\" target=\"_blank\" rel=\"noopener\">Aluminum Oxide Anti-Slip Additive for Floor Coatings<\/a><\/li>\r\n<\/ul>\r\n<\/div>\r\n<p><script>\r\nfunction c2ToggleFaq(btn) {\r\n  var item = btn.closest('.faq-item');\r\n  var isOpen = item.classList.contains('open');\r\n  document.querySelectorAll('.faq-item.open').forEach(function(el){ el.classList.remove('open'); });\r\n  if (!isOpen) { item.classList.add('open'); }\r\n}\r\n<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>Brown vs White Aluminum Oxide:Which Should You Use? A definitive,  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12665,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-12632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/comments?post=12632"}],"version-history":[{"count":3,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12632\/revisions"}],"predecessor-version":[{"id":12675,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12632\/revisions\/12675"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media\/12665"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media?parent=12632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/categories?post=12632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/tags?post=12632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}