{"id":12428,"date":"2026-03-09T07:07:15","date_gmt":"2026-03-09T07:07:15","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12428"},"modified":"2026-03-09T08:17:30","modified_gmt":"2026-03-09T08:17:30","slug":"aluminum-oxide-abrasive-media-uses-grit-sizes-where-to-buy","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/fr\/resource\/blog\/aluminum-oxide-abrasive-media-uses-grit-sizes-where-to-buy\/","title":{"rendered":"Aluminum Oxide Abrasive Media: Uses, Grit Sizes &amp; Where to Buy"},"content":{"rendered":"<!--\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Article\",\n  \"headline\": \"Aluminum Oxide Abrasive Media: Uses, Grit Sizes & Where to Buy\",\n  \"description\": \"A comprehensive technical guide to aluminum oxide abrasive blasting media \u2014 covering brown vs white fused alumina, grit sizes, hardness, recyclability, surface profiles, and industrial applications including aerospace, automotive, surface preparation, and precision finishing.\",\n  \"image\": \"https:\/\/www.yourdomain.com\/wp-content\/uploads\/aluminum-oxide-abrasive-media.jpg\",\n  \"author\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n    \"url\": \"https:\/\/www.yourdomain.com\"\n  },\n  \"publisher\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n    \"logo\": {\n      \"@type\": \"ImageObject\",\n      \"url\": \"https:\/\/www.yourdomain.com\/wp-content\/uploads\/logo.png\"\n    }\n  },\n  \"datePublished\": \"2026-03-05\",\n  \"dateModified\": \"2026-03-05\",\n  \"mainEntityOfPage\": {\n    \"@type\": \"WebPage\",\n    \"@id\": \"https:\/\/www.yourdomain.com\/aluminum-oxide-abrasive-media\/\"\n  }\n}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is aluminum oxide abrasive media used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminum oxide is used for surface preparation of structural steel, stainless steel, and non-ferrous metals; precision finishing of aerospace components; deburring and deflashing of castings; lapping and grinding; thermal spray coating preparation; and general-purpose abrasive blasting across industrial, automotive, and aerospace applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between brown and white aluminum oxide?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Brown fused alumina (BFA) contains 94\u201397% Al\u2082O\u2083 and is the cost-effective workhorse grade for general industrial blasting, grinding, and surface preparation. White fused alumina (WFA) is processed to 99%+ Al\u2082O\u2083 purity, giving it slightly higher hardness, a friable crystal structure, and near-zero iron contamination \u2014 making it the correct choice for stainless steel, aerospace alloys, precision electronics, and any application where contamination is not acceptable.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How many times can aluminum oxide abrasive media be reused?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"With a proper media reclaim system \u2014 screening, air classification, and periodic replenishment \u2014 aluminum oxide can typically be reused 5 to 10 blast cycles before the particle size distribution degrades to the point where profile consistency is compromised. The exact number depends on operating pressure, nozzle size, substrate hardness, and reclaim system efficiency.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What grit size of aluminum oxide should I use for blasting steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For standard industrial steel surface preparation to SSPC-SP10 Near-White cleanliness with a 1.5\u20132.5 mil profile, 60\u201380 grit aluminum oxide is the most common specification. For deeper profiles (2.5\u20134.0 mil) required by high-build coatings, use 36\u201346 grit. For precision finishing and thin-film coatings, 100\u2013150 grit is appropriate.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is aluminum oxide abrasive media safe to use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Aluminum oxide contains no free crystalline silica and is fully compliant with OSHA's crystalline silica standard (29 CFR 1910.1053). Standard respiratory protection (supplied-air respirator), eye and face protection, hearing protection, and blast suit are required during use. Spent aluminum oxide media is generally classified as non-hazardous solid waste unless it has absorbed regulated contaminants from the blasted surface.\"\n      }\n    }\n  ]\n}\n<\/script>\n-->\n\n<!-- POST BODY STARTS HERE -->\n\n<style>\n\/* \u2500\u2500 Design tokens \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 *\/\n.hlh-c4 *, .hlh-c4 *::before, .hlh-c4 *::after { box-sizing: border-box; }\n\n.hlh-c4 {\n  --brand:        #1a4f8a;\n  --brand-light:  #e8f0fb;\n  --brand-mid:    #2e6db4;\n  --accent:       #e07b2a;\n  --accent-light: #fff4ea;\n  --green:        #166534;\n  --green-bg:     #dcfce7;\n  --red:          #991b1b;\n  --red-bg:       #fee2e2;\n  --yellow-bg:    #fefce8;\n  --text:         #1c2333;\n  --muted:        #5a6478;\n  --border:       #d8e2ef;\n  --radius:       8px;\n  \/* Al2O3 brand accent \u2014 warm brown-amber for the product *\/\n  --al2o3-brown:  #92400e;\n  --al2o3-brown-bg: #fef3c7;\n  --al2o3-white:  #1e3a5f;\n  --al2o3-white-bg: #eff6ff;\n  font-family: 'Georgia', 'Times New Roman', serif;\n  color: var(--text);\n  line-height: 1.85;\n  max-width: 860px;\n  margin: 0 auto;\n  padding: 0 16px;\n}\n\n\/* Typography *\/\n.hlh-c4 h1 {\n  font-family: 'Trebuchet MS', sans-serif;\n  font-size: clamp(1.7rem, 4vw, 2.45rem);\n  color: var(--brand); 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}\n.hlh-grade-header .gh-sub { font-size: 0.78rem; font-weight: 400; opacity: 0.88; display: block; margin-top: 2px; }\n.hlh-grade-body { padding: 16px 18px; background: #fff; }\n.hlh-grade-body ul { margin: 0; padding-left: 1.2em; font-size: 0.88rem; }\n.hlh-grade-body li { margin-bottom: 5px; }\n.hlh-grade-body .gspec { margin-top: 12px; }\n.hlh-grade-body .gspec-row {\n  display: flex; justify-content: space-between;\n  font-family: 'Trebuchet MS', sans-serif; font-size: 0.8rem;\n  padding: 5px 0; border-bottom: 1px solid var(--border);\n}\n.hlh-grade-body .gspec-row:last-child { border-bottom: none; }\n.hlh-grade-body .gspec-row .gk { color: var(--muted); }\n.hlh-grade-body .gspec-row .gv { font-weight: 700; color: var(--text); }\n\n\/* \u2500\u2500 Grit size reference table \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 *\/\n.hlh-c4-tw { overflow-x: auto; 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margin-bottom: 8px; display: block; }\n.hlh-c4-app-card h4 {\n  font-family: 'Trebuchet MS', sans-serif; font-size: 0.92rem;\n  color: var(--brand); margin: 0 0 6px;\n}\n.hlh-c4-app-card p { font-size: 0.84rem; color: var(--muted); margin: 0 0 8px; line-height: 1.55; }\n.hlh-c4-app-card .ac-spec {\n  font-family: 'Trebuchet MS', sans-serif; font-size: 0.77rem;\n  color: var(--brand-mid); font-weight: 700;\n}\n\n\/* \u2500\u2500 Profile depth visual \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 *\/\n.hlh-profile-bars { margin: 1.4em 0 2em; font-family: 'Trebuchet MS', sans-serif; }\n.hlh-pb-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }\n.hlh-pb-label { width: 160px; font-size: 0.82rem; font-weight: 600; color: var(--text); flex-shrink: 0; }\n.hlh-pb-track { flex: 1; background: #e5eaf2; border-radius: 4px; height: 24px; position: relative; }\n.hlh-pb-fill {\n  height: 100%; border-radius: 4px;\n  display: flex; align-items: center; padding-left: 10px;\n  font-size: 0.73rem; font-weight: 700; color: #fff; white-space: nowrap;\n}\n.hlh-pb-scale {\n  display: flex; justify-content: space-between;\n  font-size: 0.72rem; color: var(--muted); margin-top: 4px;\n}\n\n\/* \u2500\u2500 Callouts \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500*\/\n.hlh-c4-callout {\n  border-radius: var(--radius); padding: 15px 18px;\n  margin: 1.4em 0; display: flex; gap: 12px; align-items: flex-start;\n}\n.hlh-c4-callout-icon { font-size: 1.25rem; flex-shrink: 0; line-height: 1.5; }\n.hlh-c4-callout-body { flex: 1; 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font-size: 0.76rem; }\n  .hlh-c4-app-grid    { grid-template-columns: 1fr; }\n}\n<\/style>\n\n<article class=\"hlh-c4\" itemscope itemtype=\"https:\/\/schema.org\/Article\">\n\n  \n\n  <!-- Hero -->\n  <div class=\"hlh-c4-hero\">\n    <h1 itemprop=\"headline\">Aluminum Oxide Abrasive Media: Uses, Grit Sizes &amp; Where to Buy<\/h1>\n    <p class=\"sub\">The complete technical guide to aluminum oxide blast media \u2014 brown vs white fused alumina, grit selection, surface profiles, industrial applications, and factory-direct sourcing from Jiangsu Henglihong Technology.<\/p>\n    \n  <\/div>\n\n  <!-- Pillar backlink -->\n  <div class=\"hlh-c4-pillar\">\n    \ud83d\udcda Part of our complete resource: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/what-is-abrasive-media-types-uses-complete-selection-guide\/\">What Is Abrasive Media? The Ultimate Guide<\/a> \u2014 covering all media types, blasting fundamentals, safety, and buying guidance.\n  <\/div>\n\n  <!-- TOC -->\n  <nav class=\"hlh-c4-toc\" aria-label=\"Table of Contents\">\n    <p class=\"hlh-c4-toc-title\">\ud83d\udccb Table of Contents<\/p>\n    <ol>\n      <li><a href=\"#what-is\">What Is Aluminum Oxide Abrasive Media?<\/a><\/li>\n      <li><a href=\"#bfa-vs-wfa\">Brown vs White Fused Alumina<\/a><\/li>\n      <li><a href=\"#key-specs\">Key Technical Specifications<\/a><\/li>\n      <li><a href=\"#grit-sizes\">Grit Size Guide &amp; Selection<\/a><\/li>\n      <li><a href=\"#surface-profile\">Surface Profile by Grit Size<\/a><\/li>\n      <li><a href=\"#applications\">Industrial Applications<\/a><\/li>\n      <li><a href=\"#pros-cons\">Pros &amp; Cons<\/a><\/li>\n      <li><a href=\"#vs-alternatives\">Aluminum Oxide vs Other Media<\/a><\/li>\n      <li><a href=\"#recyclability\">Recyclability &amp; Media Management<\/a><\/li>\n      <li><a href=\"#safety\">Safety &amp; Compliance<\/a><\/li>\n      <li><a href=\"#ordering\">Ordering from Henglihong<\/a><\/li>\n      <li><a href=\"#faq\">FAQ<\/a><\/li>\n    <\/ol>\n  <\/nav>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"what-is\">What Is Aluminum Oxide Abrasive Media?<\/h2>\n\n  <p>Aluminum oxide \u2014 chemical formula Al\u2082O\u2083, also known as alumina or corundum \u2014 is the world&#8217;s most widely used synthetic abrasive material. In blast media form, it is manufactured by fusing high-purity bauxite ore in a tilting arc furnace at temperatures exceeding 2,000\u00b0C, then crushing, grading, and classifying the resulting crystalline mass into precise particle size distributions.<\/p>\n\n  <p>The result is an extremely hard, angular abrasive with a blocky, fractured crystal structure that delivers consistent, aggressive cutting action on virtually any substrate. At <strong>Mohs hardness 9<\/strong> \u2014 harder than any mineral found in common industrial surfaces, and second only to diamond and silicon carbide among commercial abrasives \u2014 aluminum oxide cuts through rust, mill scale, old coatings, and surface oxides with high efficiency.<\/p>\n\n  <p>Its combination of hardness, angular particle shape, chemical inertness, thermal stability, and recyclability has made aluminum oxide the default choice for industrial abrasive blasting, grinding wheel manufacture, lapping compounds, refractory ceramics, and thermal spray coating preparation across every major manufacturing sector worldwide.<\/p>\n\n  <p>For context on how aluminum oxide compares to garnet, glass beads, steel grit, and other blast media types, see our <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-media-comparison-chart-hardness-grit-cost-guide\/\">Abrasive Media Comparison Chart<\/a> or our full <a href=\"https:\/\/hlh-js.com\/resource\/blog\/10-types-of-abrasive-blasting-media-pros-cons-best-uses\/\">guide to all 10 types of abrasive blasting media<\/a>.<\/p>\n\n  <!-- Quick specs panel -->\n  <div class=\"hlh-c4-specs-panel\" aria-label=\"Aluminum oxide abrasive media quick specifications\">\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Duret\u00e9 Mohs<\/div>\n      <div class=\"hlh-c4-spec-value\">9.0<\/div>\n      <div class=\"hlh-c4-spec-note\">2nd hardest common abrasive<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Forme des particules<\/div>\n      <div class=\"hlh-c4-spec-value\">Angulaire<\/div>\n      <div class=\"hlh-c4-spec-note\">Blocky, fractured crystal<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Grit Range<\/div>\n      <div class=\"hlh-c4-spec-value\">16 \u2013 320<\/div>\n      <div class=\"hlh-c4-spec-note\">Coarse to ultra-fine<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Recyclabilit\u00e9<\/div>\n      <div class=\"hlh-c4-spec-value\">5 \u2013 10\u00d7<\/div>\n      <div class=\"hlh-c4-spec-note\">With proper reclaim system<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Point de fusion<\/div>\n      <div class=\"hlh-c4-spec-value\">2,050\u00b0C<\/div>\n      <div class=\"hlh-c4-spec-note\">Thermally stable<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Densit\u00e9 en vrac<\/div>\n      <div class=\"hlh-c4-spec-value\">~1.75 g\/cm\u00b3<\/div>\n      <div class=\"hlh-c4-spec-note\">BFA; WFA slightly lower<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Crystalline Silica<\/div>\n      <div class=\"hlh-c4-spec-value\">Aucun<\/div>\n      <div class=\"hlh-c4-spec-note\">OSHA-compliant \u2705<\/div>\n    <\/div>\n    <div class=\"hlh-c4-spec\">\n      <div class=\"hlh-c4-spec-label\">Couleur<\/div>\n      <div class=\"hlh-c4-spec-value\">Brown \/ White<\/div>\n      <div class=\"hlh-c4-spec-note\">By grade (BFA \/ WFA)<\/div>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"bfa-vs-wfa\">Brown Fused Alumina vs White Fused Alumina: Which Grade Do You Need?<\/h2>\n\n  <p>Aluminum oxide blast media comes in two primary commercial grades that differ significantly in purity, hardness, crystal structure, and application suitability. Choosing between them is the first specification decision for any aluminum oxide project.<\/p>\n\n  <div class=\"hlh-grade-compare\">\n    <!-- BFA -->\n    <div class=\"hlh-grade-card\">\n      <div class=\"hlh-grade-header bfa\">\n        Brown Fused Alumina (BFA)\n        <span class=\"gh-sub\">The industrial workhorse \u2014 reddish-brown colour<\/span>\n      <\/div>\n      <div class=\"hlh-grade-body\">\n        <ul>\n          <li>Al\u2082O\u2083 content: <strong>94\u201397%<\/strong><\/li>\n          <li>Contains TiO\u2082 (1.5\u20134%) which improves toughness<\/li>\n          <li>Slightly lower hardness than WFA \u2014 more impact-resistant, less friable<\/li>\n          <li>Cost-effective for high-volume industrial applications<\/li>\n          <li>Not suitable where iron or titanium contamination is a concern<\/li>\n        <\/ul>\n        <div class=\"gspec\">\n          <div class=\"gspec-row\"><span class=\"gk\">Al\u2082O\u2083 purity<\/span><span class=\"gv\">94\u201397%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">TiO\u2082 content<\/span><span class=\"gv\">1,5-4,0%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Fe\u2082O\u2083<\/span><span class=\"gv\">&lt;0.5%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Mohs hardness<\/span><span class=\"gv\">~9.0<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Best use<\/span><span class=\"gv\">General industrial, structural steel, automotive<\/span><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n    <!-- WFA -->\n    <div class=\"hlh-grade-card\">\n      <div class=\"hlh-grade-header wfa\">\n        White Fused Alumina (WFA)\n        <span class=\"gh-sub\">High-purity precision grade \u2014 bright white colour<\/span>\n      <\/div>\n      <div class=\"hlh-grade-body\">\n        <ul>\n          <li>Al\u2082O\u2083 content: <strong>99%+<\/strong><\/li>\n          <li>Near-zero iron, titanium, and trace element contamination<\/li>\n          <li>Slightly more friable than BFA \u2014 creates sharper, self-renewing cutting edges<\/li>\n          <li>Higher cost \u2014 justified by purity and contamination-critical applications<\/li>\n          <li>Required for stainless steel, aerospace alloys, and electronics<\/li>\n        <\/ul>\n        <div class=\"gspec\">\n          <div class=\"gspec-row\"><span class=\"gk\">Al\u2082O\u2083 purity<\/span><span class=\"gv\">99.0\u201399.5%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">TiO\u2082 content<\/span><span class=\"gv\">&lt;0.05%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Fe\u2082O\u2083<\/span><span class=\"gv\">&lt;0.08%<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Mohs hardness<\/span><span class=\"gv\">~9.0\u20139.1<\/span><\/div>\n          <div class=\"gspec-row\"><span class=\"gk\">Best use<\/span><span class=\"gv\">Aerospace, stainless, electronics, precision<\/span><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"hlh-c4-callout co-tip\">\n    <span class=\"hlh-c4-callout-icon\">\u2705<\/span>\n    <div class=\"hlh-c4-callout-body\">\n      <strong>Simple rule of thumb<\/strong>\n      <p>If your substrate is carbon steel or cast iron and contamination is not a concern, <span class=\"b b-br\">Brown Fused Alumina (BFA)<\/span> is the correct and cost-effective choice. If your substrate is stainless steel, a non-ferrous alloy, or a precision aerospace component \u2014 or if the specification prohibits iron contamination \u2014 specify <span class=\"b b-wh\">White Fused Alumina (WFA)<\/span>.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"key-specs\">Key Technical Specifications<\/h2>\n\n  <p>The table below summarises the principal technical parameters of Jiangsu Henglihong Technology&#8217;s aluminum oxide abrasive media grades, in accordance with FEPA (Federation of European Producers of Abrasives) and GB\/T (Chinese National Standard) specifications.<\/p>\n\n  <div class=\"hlh-c4-tw\">\n    <table class=\"hlh-c4-table\">\n      <caption>Specifications for Henglihong BFA and WFA abrasive media. Full COA and SDS available on request.<\/caption>\n      <thead>\n        <tr>\n          <th>Param\u00e8tres<\/th>\n          <th>BFA Standard Grade<\/th>\n          <th>BFA Premium Grade<\/th>\n          <th>WFA Standard Grade<\/th>\n          <th>WFA Premium Grade<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 (min %)<\/td>\n          <td>94.5<\/td>\n          <td>96.0<\/td>\n          <td>99.0<\/td>\n          <td>99.5<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">TiO\u2082 (max %)<\/td>\n          <td>4.0<\/td>\n          <td>3.0<\/td>\n          <td>0.08<\/td>\n          <td>0.05<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Fe\u2082O\u2083 (max %)<\/td>\n          <td>0.50<\/td>\n          <td>0.30<\/td>\n          <td>0.12<\/td>\n          <td>0.08<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">SiO\u2082 (max %)<\/td>\n          <td>1.50<\/td>\n          <td>1.00<\/td>\n          <td>0.20<\/td>\n          <td>0.10<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Bulk density (g\/cm\u00b3)<\/td>\n          <td>1.70\u20131.85<\/td>\n          <td>1.70\u20131.85<\/td>\n          <td>1.55\u20131.70<\/td>\n          <td>1.55\u20131.70<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Mohs hardness<\/td>\n          <td>9.0<\/td>\n          <td>9.0<\/td>\n          <td>9.0\u20139.1<\/td>\n          <td>9.0\u20139.1<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Crystalline silica<\/td>\n          <td colspan=\"4\" style=\"text-align:center\"><span class=\"b b-g\">None detected \u2014 OSHA compliant<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Available grits<\/td>\n          <td colspan=\"2\">F16 \u2013 F220 (FEPA); 16 \u2013 220 mesh (US)<\/td>\n          <td colspan=\"2\">F16 \u2013 F320 (FEPA); 16 \u2013 320 mesh (US)<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Packaging<\/td>\n          <td colspan=\"4\">25kg bags \u00b7 1-ton super sacks \u00b7 Bulk container<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"grit-sizes\">Grit Size Guide: Which Grit Do You Need?<\/h2>\n\n  <p>Grit size is the most frequently misspecified variable in aluminum oxide media selection. The correct grit is determined by the required surface profile depth \u2014 which in turn is set by your coating system&#8217;s adhesion requirement. Below is a comprehensive grit selection reference covering the full commercial range.<\/p>\n\n  <div class=\"hlh-c4-tw\">\n    <table class=\"hlh-c4-table\">\n      <caption>Grit size reference for aluminum oxide abrasive blasting and finishing. Profile ranges based on pressure blasting at 80\u2013100 psi through a 3\/8&#8243; nozzle at 12\u201318 inch standoff distance.<\/caption>\n      <thead>\n        <tr>\n          <th>Grit Size<\/th>\n          <th>Approx. Particle Size (\u00b5m)<\/th>\n          <th>Typical Profile Depth<\/th>\n          <th>SSPC Cleanliness<\/th>\n          <th>Primary Applications<\/th>\n          <th>Recommended Grade<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td class=\"col-hl\">16 \u2013 24<\/td>\n          <td>1,180 \u2013 710<\/td>\n          <td><span class=\"b b-r\">3.5 \u2013 5.0+ mil<\/span><\/td>\n          <td>SP5 \/ SP10<\/td>\n          <td>Very heavy rust removal, deep profile for thermal spray prep, refractory surface preparation<\/td>\n          <td><span class=\"b b-br\">BFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">30 \u2013 36<\/td>\n          <td>600 \u2013 425<\/td>\n          <td><span class=\"b b-r\">2.5 \u2013 4.0 mil<\/span><\/td>\n          <td>SP5 \/ SP10<\/td>\n          <td>Heavy rust and mill scale removal, structural steel prep for high-build coatings, pipe coating<\/td>\n          <td><span class=\"b b-br\">BFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">46 \u2013 60<\/td>\n          <td>355 \u2013 250<\/td>\n          <td><span class=\"b b-y\">1.5 \u2013 2.5 mil<\/span><\/td>\n          <td>SP10 \/ SP6<\/td>\n          <td>General industrial steel prep, standard epoxy and polyurethane coating systems, fabrication shops<\/td>\n          <td><span class=\"b b-br\">BFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">80<\/td>\n          <td>180<\/td>\n          <td><span class=\"b b-y\">1.0 \u2013 1.8 mil<\/span><\/td>\n          <td>SP10 \/ SP6<\/td>\n          <td>Medium-duty prep, powder coat prep, automotive chassis, light industrial equipment<\/td>\n          <td><span class=\"b b-br\">BFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">100 \u2013 120<\/td>\n          <td>150 \u2013 125<\/td>\n          <td><span class=\"b b-g\">0.5 \u2013 1.2 mil<\/span><\/td>\n          <td>SP10<\/td>\n          <td>Precision coating prep, automotive body panels, stainless steel light prep, aerospace primer prep<\/td>\n          <td><span class=\"b b-br\">BFA<\/span> \/ <span class=\"b b-wh\">WFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">150 \u2013 180<\/td>\n          <td>106 \u2013 90<\/td>\n          <td><span class=\"b b-g\">0.2 \u2013 0.6 mil<\/span><\/td>\n          <td>SP10<\/td>\n          <td>Fine surface conditioning, stainless steel cleaning, precision part deburring, pre-anodize prep<\/td>\n          <td><span class=\"b b-wh\">WFA<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">220 \u2013 320<\/td>\n          <td>75 \u2013 45<\/td>\n          <td><span class=\"b b-g\">Surface haze only<\/span><\/td>\n          <td>N\/A<\/td>\n          <td>Lapping compounds, precision grinding, electronics substrate preparation, optical component finishing<\/td>\n          <td><span class=\"b b-wh\">WFA<\/span><\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"hlh-c4-callout co-warn\">\n    <span class=\"hlh-c4-callout-icon\">\u26a0\ufe0f<\/span>\n    <div class=\"hlh-c4-callout-body\">\n      <strong>Always verify against your coating datasheet<\/strong>\n      <p>Profile ranges in the table above are based on standard operating conditions. Your specific coating system&#8217;s datasheet specifies a minimum and maximum acceptable profile range \u2014 and that range takes precedence. An under-profiled surface reduces coating adhesion; an over-profiled surface allows coating peaks to rust through the film. Both cause premature coating failure.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"surface-profile\">Surface Profile Depth by Grit Size \u2014 Visual Reference<\/h2>\n\n  <p>The bars below visualise the typical anchor profile depth range produced by each major grit band at standard air blast pressure (80\u2013100 psi). The scale runs from 0 to 5 mil (0\u2013127 \u00b5m). Use this alongside your coating manufacturer&#8217;s specified profile range to confirm grit selection.<\/p>\n\n  <div class=\"hlh-profile-bars\" role=\"img\" aria-label=\"Aluminum oxide surface profile depth by grit size\">\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 16\u201324 (coarse)<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:90%;background:#b91c1c\">3.5 \u2013 5.0+ mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 30\u201336<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:72%;background:#dc2626\">2.5 \u2013 4.0 mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 46\u201360<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:46%;background:#e07b2a\">1.5 \u2013 2.5 mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 80<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:32%;background:#f59e0b\">1.0 \u2013 1.8 mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 100\u2013120<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:20%;background:#16a34a\">0.5 \u2013 1.2 mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 150\u2013180<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:10%;background:#2e6db4\">0.2 \u2013 0.6 mil<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-row\">\n      <span class=\"hlh-pb-label\">Grit 220\u2013320 (fine)<\/span>\n      <div class=\"hlh-pb-track\">\n        <div class=\"hlh-pb-fill\" style=\"width:5%;background:#1a4f8a\">~Surface haze<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"hlh-pb-scale\">\n      <span>0 mil<\/span><span>1 mil<\/span><span>2 mil<\/span>\n      <span>3 mil<\/span><span>4 mil<\/span><span>5 mil+<\/span>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"applications\">Industrial Applications of Aluminum Oxide Blast Media<\/h2>\n\n  <p>Aluminum oxide&#8217;s hardness, angular shape, and chemical inertness make it suitable for a broader range of applications than any other single abrasive media type. The following are the primary industrial use cases across the four sectors Jiangsu Henglihong Technology serves.<\/p>\n\n  <div class=\"hlh-c4-app-grid\">\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83c\udfd7\ufe0f<\/span>\n      <h4>Structural Steel Surface Preparation<\/h4>\n      <p>The most common use case globally. Al\u2082O\u2083 removes rust, mill scale, and existing coatings to SSPC-SP10 or SP5 cleanliness while creating the anchor profile required for epoxy, polyurethane, and zinc-rich primer systems.<\/p>\n      <span class=\"ac-spec\">Recommended: BFA 36\u201360 grit \u00b7 Profile: 1.5\u20133.0 mil<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\u2708\ufe0f<\/span>\n      <h4>Aerospace Component Preparation<\/h4>\n      <p>WFA is specified for aluminum alloy, titanium, and Inconel components where iron contamination would compromise corrosion resistance or bonding. Used for adhesive bonding surface prep, primer adhesion, and thermal barrier coating prep on turbine parts.<\/p>\n      <span class=\"ac-spec\">Recommended: WFA 80\u2013150 grit \u00b7 Grade: 99%+ Al\u2082O\u2083<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83d\ude97<\/span>\n      <h4>Automotive Restoration<\/h4>\n      <p>Medium-grit BFA effectively strips rust and old paint from steel chassis, frames, and suspension components before coating. Fine-grit WFA is used for precision prep of alloy wheels and engine components where dimensional change must be minimised.<\/p>\n      <span class=\"ac-spec\">Recommended: BFA 60\u201380 grit for chassis; WFA 120 for alloy parts<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83d\udd29<\/span>\n      <h4>Precision Deburring &amp; Deflashing<\/h4>\n      <p>Fine-grit aluminum oxide in suction blast cabinets removes burrs and flash from machined metal, die castings, and investment castings without altering critical dimensions. WFA is preferred where contamination of bores or threads must be avoided.<\/p>\n      <span class=\"ac-spec\">Recommended: WFA 100\u2013180 grit \u00b7 Suction cabinet<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83c\udf21\ufe0f<\/span>\n      <h4>Thermal Spray Coating Preparation<\/h4>\n      <p>Thermal spray coatings (HVOF, plasma spray, arc spray) require the highest surface cleanliness and deepest anchor profiles of any coating process \u2014 often 3.0\u20135.0 mil. Coarse BFA is the standard prep media for thermal spray bond coats on aerospace and industrial components.<\/p>\n      <span class=\"ac-spec\">Recommended: BFA 16\u201336 grit \u00b7 Profile: 3.0\u20135.0 mil<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\u26a1<\/span>\n      <h4>Electronics &amp; Semiconductor Substrates<\/h4>\n      <p>Ultra-fine WFA (220\u2013320 grit) is used for micro-scale surface conditioning of ceramic substrates, wafer carriers, and PCB components. The near-zero iron contamination and tight particle size distribution of premium WFA are critical in this application.<\/p>\n      <span class=\"ac-spec\">Recommended: WFA 220\u2013320 grit \u00b7 99.5% Al\u2082O\u2083 purity<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83d\udd27<\/span>\n      <h4>Grinding &amp; Lapping Wheels<\/h4>\n      <p>Bonded aluminum oxide is the primary abrasive grain in conventional grinding wheels, honing sticks, and sharpening stones. Both BFA (for general toolroom use) and WFA (for tool steel and HSS grinding) are key raw materials in the abrasive products manufacturing industry.<\/p>\n      <span class=\"ac-spec\">Supply grade: F-series FEPA grit for bonded abrasives<\/span>\n    <\/div>\n    <div class=\"hlh-c4-app-card\">\n      <span class=\"ac-icon\">\ud83c\udfed<\/span>\n      <h4>Refractory &amp; Industrial Ceramics<\/h4>\n      <p>Coarse aluminum oxide is a primary raw material in high-temperature refractory castables, kiln furniture, and alumina ceramics. Henglihong supplies fused alumina for refractory manufacturing in addition to blast media grade products.<\/p>\n      <span class=\"ac-spec\">Supply grade: Tabular alumina, calcined alumina, fused alumina aggregate<\/span>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"pros-cons\">Pros &amp; Cons of Aluminum Oxide Abrasive Media<\/h2>\n\n  <div class=\"hlh-c4-proscons\">\n    <div class=\"hlh-c4-pros\">\n      <h4>\u2705 Advantages<\/h4>\n      <ul>\n        <li><strong>Extremely hard (Mohs 9)<\/strong> \u2014 aggressive, fast, effective on virtually all metals<\/li>\n        <li><strong>Angular shape<\/strong> \u2014 creates strong anchor profiles required by industrial coating systems<\/li>\n        <li><strong>Wide grit range<\/strong> (16\u2013320) \u2014 one media family covers everything from structural prep to precision finishing<\/li>\n        <li><strong>Recyclable 5\u201310\u00d7<\/strong> \u2014 substantially lower per-cycle cost than single-use alternatives<\/li>\n        <li><strong>Two purity grades<\/strong> (BFA\/WFA) \u2014 cost-effective for general use, ultra-pure for contamination-critical applications<\/li>\n        <li><strong>Silica-free<\/strong> \u2014 OSHA compliant in all jurisdictions<\/li>\n        <li><strong>Chemically inert<\/strong> \u2014 does not react with most substrates or coating systems<\/li>\n        <li><strong>Self-sharpening<\/strong> \u2014 particle fracture during use maintains cutting edges<\/li>\n      <\/ul>\n    <\/div>\n    <div class=\"hlh-c4-cons\">\n      <h4>\u274c Limitations<\/h4>\n      <ul>\n        <li><strong>Too aggressive<\/strong> for composite, fiberglass, thin aluminum, plastic, and wood substrates<\/li>\n        <li><strong>BFA contains iron traces<\/strong> \u2014 not suitable for stainless steel without WFA specification<\/li>\n        <li><strong>Generates significant dust<\/strong> \u2014 requires effective dust collection and respiratory PPE<\/li>\n        <li><strong>Not compatible with wheel blast machines<\/strong> \u2014 use steel grit\/shot in centrifugal wheel systems<\/li>\n        <li><strong>Contamination accumulates over cycles<\/strong> \u2014 media must be properly reclaimed and replenished to maintain quality<\/li>\n        <li><strong>Higher purchase cost<\/strong> than single-use mineral alternatives (garnet, crushed glass) \u2014 though lower per-cycle cost in practice<\/li>\n      <\/ul>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"vs-alternatives\">Aluminum Oxide vs Alternative Blast Media<\/h2>\n\n  <p>Understanding when aluminum oxide is the right choice \u2014 and when another media type outperforms it \u2014 prevents specification errors. The comparison below covers the most common decision points. For a comprehensive side-by-side data table across all media types, see our <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-media-comparison-chart-hardness-grit-cost-guide\/\">Abrasive Media Comparison Chart<\/a>.<\/p>\n\n  <div class=\"hlh-c4-tw\">\n    <table class=\"hlh-c4-table\">\n      <caption>Head-to-head comparison of aluminum oxide against the most common alternative media types.<\/caption>\n      <thead>\n        <tr>\n          <th>Comparison<\/th>\n          <th>Oxyde d'aluminium<\/th>\n          <th>Alternative<\/th>\n          <th>When to Choose the Alternative<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 vs <a href=\"https:\/\/hlh-js.com\/products\/garnet-sand\/\">Grenat<\/a><\/td>\n          <td>Harder, recyclable 5\u201310\u00d7, deeper profile, more aggressive<\/td>\n          <td>Lower dust, lower chloride, better for confined spaces and marine coating specs<\/td>\n          <td>Choose garnet when dust control is critical, for marine projects, or when spec explicitly requires low-chloride media<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 vs <a href=\"https:\/\/hlh-js.com\/products\/glass-beads-sandblasting\/\">Perles de verre<\/a><\/td>\n          <td>Angular \u2014 creates strong anchor profile<\/td>\n          <td>Spherical \u2014 produces smooth peened finish, no profile<\/td>\n          <td>Choose glass beads when a satin finish is required without anchor profile, or for stainless steel decorative finishing<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 vs <a href=\"https:\/\/hlh-js.com\/products\/steel-shots\/\">Grain d'acier<\/a><\/td>\n          <td>Suitable for pressure blast; recyclable 5\u201310\u00d7<\/td>\n          <td>Recyclable 100+\u00d7; exclusively for wheel blast; very deep profile<\/td>\n          <td>Choose steel grit for high-volume wheel blast operations where lowest per-cycle cost at scale is the priority<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 vs <a href=\"https:\/\/hlh-js.com\/products\/plastic-media\/\">Supports en plastique<\/a><\/td>\n          <td>Aggressive \u2014 can damage soft or thin substrates<\/td>\n          <td>Very gentle \u2014 strips coatings without substrate damage<\/td>\n          <td>Choose plastic media for aircraft composite \/ aluminum skin stripping or any substrate where dimensional integrity is critical<\/td>\n        <\/tr>\n        <tr>\n          <td class=\"col-hl\">Al\u2082O\u2083 vs Silicon Carbide<\/td>\n          <td>Mohs 9 \u2014 effective on most industrial substrates<\/td>\n          <td>Mohs 9.5 \u2014 required for ceramics, carbide, and hardened glass<\/td>\n          <td>Choose silicon carbide only when substrate is harder than Mohs 9 \u2014 ceramics, tungsten carbide tooling, or stone engraving<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"recyclability\">Recyclability &amp; Media Management<\/h2>\n\n  <p>One of aluminum oxide&#8217;s key economic advantages over single-use media is its ability to be recycled through a blast system multiple times before replacement. Achieving the full 5\u201310 cycle lifespan requires a properly designed and maintained media reclaim system and a disciplined media management protocol.<\/p>\n\n  <h3>What Happens to Aluminum Oxide During Blasting<\/h3>\n  <p>Each blast cycle fractures a proportion of particles into smaller fragments. This is actually part of what maintains cutting effectiveness \u2014 fresh fracture surfaces are sharp and angular. However, as the proportion of fine particles increases over successive cycles, the overall particle size distribution shifts finer, which reduces profile depth and blast efficiency. Without reclaim, the accumulating fines and contamination degrade performance rapidly.<\/p>\n\n  <h3>Reclaim System Requirements<\/h3>\n  <p>An effective reclaim system for aluminum oxide requires three stages:<\/p>\n  <ol>\n    <li><strong>Mechanical screening:<\/strong> Removes particles above and below the acceptable size range, as well as coarse contaminants picked up from the substrate.<\/li>\n    <li><strong>Air wash classification (elutriator):<\/strong> Removes fine dust particles \u2014 typically &lt;45 \u00b5m \u2014 that are too small to contribute to effective blasting but add to respiratory hazard and contaminate the media charge.<\/li>\n    <li><strong>Periodic replenishment:<\/strong> As the working media charge degrades, fresh media is added to maintain the correct particle size distribution. A working charge typically requires 10\u201315% replenishment per cycle in a well-managed system.<\/li>\n  <\/ol>\n\n  <div class=\"hlh-c4-callout co-info\">\n    <span class=\"hlh-c4-callout-icon\">\ud83d\udca1<\/span>\n    <div class=\"hlh-c4-callout-body\">\n      <strong>Cross-substrate contamination warning<\/strong>\n      <p>Media that has been used on painted steel surfaces \u2014 particularly older painted structures of unknown coating history \u2014 may contain lead, chromium, or cadmium absorbed from the blasted coatings. This contaminated media must not be reused on clean or food-contact substrates, and spent media from such projects should be characterised for hazardous waste classification before disposal. Always keep substrate-specific media batches separate.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"safety\">Safety &amp; Regulatory Compliance<\/h2>\n\n  <p>Aluminum oxide abrasive media is one of the safest blast media options available from a regulatory standpoint, but it is not hazard-free. Standard blast safety protocols apply.<\/p>\n\n  <h3>OSHA Crystalline Silica Compliance<\/h3>\n  <p>Aluminum oxide contains <strong>no free crystalline silica<\/strong>. It is fully compliant with OSHA&#8217;s crystalline silica standard (29 CFR 1910.1053 and 1926.1153) and does not require the enhanced engineering controls and exposure monitoring mandated for silica-containing materials. This makes it a straightforward, compliant replacement for conventional silica sand in all jurisdictions that regulate silica exposure.<\/p>\n\n  <h3>Required PPE During Use<\/h3>\n  <ul>\n    <li><strong>Supplied-air respirator (NIOSH-approved Type CE):<\/strong> Required for all abrasive blasting operations regardless of media type, due to general airborne dust hazard and substrate contamination particles.<\/li>\n    <li><strong>Blast helmet or hood:<\/strong> Eye, face, and head protection against particle rebound.<\/li>\n    <li><strong>Leather or canvas blast suit:<\/strong> Full body protection from abrasive particle impact.<\/li>\n    <li><strong>Hearing protection:<\/strong> Blast operations routinely exceed 90 dB(A) at operator position.<\/li>\n    <li><strong>Steel-toed boots:<\/strong> Required in all industrial blasting environments.<\/li>\n  <\/ul>\n\n  <p>For a comprehensive overview of blast safety requirements including engineering controls, ventilation, and hazard communication, see our <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-media-safety-guide-osha-standards-ppe-requirements\/\">Abrasive Media Safety Guide: OSHA Standards &amp; PPE Requirements<\/a>.<\/p>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"ordering\">Ordering Aluminum Oxide from Jiangsu Henglihong Technology<\/h2>\n\n  <div class=\"hlh-c4-product-box\">\n    <div class=\"hlh-c4-product-header\">\ud83c\udfed Henglihong Aluminum Oxide \u2014 Product &amp; Ordering Information<\/div>\n    <div class=\"hlh-c4-product-body\">\n\n      <div class=\"hlh-c4-product-grid\">\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Available Grades<\/div>\n          <div class=\"pi-value\">BFA Standard \u00b7 BFA Premium \u00b7 WFA Standard \u00b7 WFA Premium<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Grit Range<\/div>\n          <div class=\"pi-value\">F16 \u2013 F320 (FEPA) \/ 16 \u2013 320 mesh (US Standard)<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Packaging Options<\/div>\n          <div class=\"pi-value\">25 kg bags \u00b7 1-ton super sacks \u00b7 Bulk container load<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">MOQ<\/div>\n          <div class=\"pi-value\">1 ton (25 kg bags) \u00b7 1 FCL for bulk pricing<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Documentation<\/div>\n          <div class=\"pi-value\">COA \u00b7 SDS \u00b7 MSDS \u00b7 Test Reports \u00b7 Export Docs<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Lead Time<\/div>\n          <div class=\"pi-value\">Standard stock grits: 3\u20137 days \u00b7 Custom: 2\u20133 weeks<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Certifications<\/div>\n          <div class=\"pi-value\">ISO 9001 \u00b7 FEPA F-series \u00b7 GB\/T 2479<\/div>\n        <\/div>\n        <div class=\"hlh-c4-product-item\">\n          <div class=\"pi-label\">Shipping<\/div>\n          <div class=\"pi-value\">Ex-Works Jiangsu \u00b7 FOB Shanghai \u00b7 CIF worldwide<\/div>\n        <\/div>\n      <\/div>\n\n      <p style=\"font-size:0.9rem;margin:0 0 14px\">Jiangsu Henglihong Technology manufactures both BFA and WFA grades at our Jiangsu Province facility, supplying customers across North America, Europe, the Middle East, and Southeast Asia. Factory-direct purchasing eliminates distributor margins, and our in-house quality laboratory verifies particle size distribution, chemistry, and bulk density on every production batch before dispatch.<\/p>\n\n      <p style=\"font-size:0.9rem;margin:0\">Custom specifications \u2014 non-standard grit mixes, specific chemistry targets, specialised packaging \u2014 are available for OEM and project-specific requirements. Contact our technical sales team to discuss your requirements.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 -->\n  <h2 id=\"faq\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n\n  <div class=\"hlh-c4-faq\">\n    <details>\n      <summary>What is aluminum oxide abrasive media used for?<\/summary>\n      <div class=\"faq-body\">\n        <p>Aluminum oxide is used across a broad spectrum of industrial and precision applications: structural steel surface preparation for protective coatings, aerospace component prep and deburring, automotive restoration, thermal spray coating preparation, precision lapping and grinding, electronics substrate finishing, and refractory manufacturing. Its combination of Mohs 9 hardness, angular particle shape, and recyclability makes it the most versatile abrasive blast media available.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>What is the difference between brown and white aluminum oxide?<\/summary>\n      <div class=\"faq-body\">\n        <p>Brown fused alumina (BFA) contains 94\u201397% Al\u2082O\u2083 with trace amounts of TiO\u2082 and Fe\u2082O\u2083 that give it a reddish-brown colour and slightly greater toughness. It is the cost-effective standard grade for general industrial blasting and grinding. White fused alumina (WFA) is reprocessed to 99%+ Al\u2082O\u2083 purity \u2014 near-zero iron and titanium \u2014 giving it a bright white colour, marginally higher hardness, and a self-sharpening friable crystal structure. WFA is required for stainless steel, aerospace alloys, electronics substrates, and any application where contamination from trace elements is not acceptable.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>How many times can aluminum oxide blast media be reused?<\/summary>\n      <div class=\"faq-body\">\n        <p>With a properly designed reclaim system \u2014 mechanical screening to remove oversize and undersize particles, air wash classification to remove fine dust, and periodic replenishment of depleted charge \u2014 aluminum oxide typically achieves 5 to 10 blast cycles before the particle size distribution has degraded sufficiently to require full replacement. Operating pressure, nozzle size, substrate hardness, and reclaim system efficiency all affect the actual cycle count. Without a reclaim system, aluminium oxide is effectively single-use and loses its economic advantage over lower-cost alternatives.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>What grit size of aluminum oxide should I use for blasting steel?<\/summary>\n      <div class=\"faq-body\">\n        <p>For standard industrial steel surface preparation to SSPC-SP10 Near-White with a 1.5\u20132.5 mil profile, 60 or 80 grit BFA is the most common and correct specification. For heavier rust or deeper profiles (2.5\u20134.0 mil) required by high-build epoxy or zinc-rich systems, use 36\u201346 grit. For light-duty prep, powder coat, or thin-film coatings requiring less than 1.5 mil, use 80\u2013120 grit. Always cross-check against the coating manufacturer&#8217;s surface preparation datasheet before finalising grit selection.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>Is aluminum oxide safe to blast stainless steel?<\/summary>\n      <div class=\"faq-body\">\n        <p>Brown fused alumina (BFA) should not be used on stainless steel because its residual iron content (Fe\u2082O\u2083 up to 0.5%) can embed in the stainless surface and initiate corrosion. White fused alumina (WFA) \u2014 with Fe\u2082O\u2083 below 0.08\u20130.12% \u2014 is the correct grade for stainless steel blasting, and is widely specified for this application in food processing equipment, pharmaceutical plant, and architectural stainless work. Specify WFA at 120\u2013180 grit for a clean, fine profile on stainless without contamination risk.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>Can I use aluminum oxide in a suction blast cabinet?<\/summary>\n      <div class=\"faq-body\">\n        <p>Yes \u2014 aluminum oxide is one of the most commonly used media in suction (siphon) blast cabinets. Grit sizes from 46 to 220 mesh work well in standard cabinet systems. Coarser grits (16\u201336) are typically too heavy for efficient siphon action and are better suited to direct pressure blast pots. For cabinet use, 60\u2013150 grit BFA or WFA covers the vast majority of deburring, cleaning, and light surface prep applications. Ensure your dust collector is rated for the media volume and particle size before starting.<\/p>\n      <\/div>\n    <\/details>\n    <details>\n      <summary>What is the difference between FEPA F-series grit and US mesh size?<\/summary>\n      <div class=\"faq-body\">\n        <p>FEPA (Federation of European Producers of Abrasives) F-series and US mesh sizes both describe particle size, and for most practical purposes they use the same numbering at equivalent sizes \u2014 F60 FEPA and 60 US mesh refer to essentially the same particle size range. Minor differences exist at the fine end of the range (above F150\/150 mesh) where the sizing standards diverge slightly. When ordering from international suppliers, specify both the FEPA and US mesh designation if you want to be certain of receiving the correct grade, and request a particle size distribution certificate to verify compliance.<\/p>\n      <\/div>\n    <\/details>\n  <\/div>\n\n  <!-- CTA -->\n  <div class=\"hlh-c4-cta\">\n    <h2>Ready to Order Aluminum Oxide Abrasive Media?<\/h2>\n    <p>Factory-direct BFA and WFA in all commercial grit sizes \u2014 25 kg bags to full container loads. Free technical consultation and COA documentation included with every order.<\/p>\n    <a class=\"hlh-c4-btn\" href=\"https:\/\/hlh-js.com\/contact\/\">Request a Quote<\/a>\n    <a class=\"hlh-c4-btn out\" href=\"https:\/\/hlh-js.com\/products\/\">View All Abrasive Media Products \u2192<\/a>\n  <\/div>\n\n\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Aluminum Oxide Abrasive Media: Uses, Grit Sizes &amp; Where to  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12459,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-12428","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12428","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/comments?post=12428"}],"version-history":[{"count":5,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12428\/revisions"}],"predecessor-version":[{"id":12499,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/12428\/revisions\/12499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media\/12459"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media?parent=12428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/categories?post=12428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/tags?post=12428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}