{"id":12647,"date":"2026-03-30T03:54:54","date_gmt":"2026-03-30T03:54:54","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12647"},"modified":"2026-03-30T05:40:44","modified_gmt":"2026-03-30T05:40:44","slug":"aluminum-oxide-blast-media-for-aerospace-medical-applications","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/ru\/resource\/\u0431\u043b\u043e\u0433\/aluminum-oxide-blast-media-for-aerospace-medical-applications\/","title":{"rendered":"Aluminum Oxide Blast Media for Aerospace &amp; Medical Applications"},"content":{"rendered":"<style>\n\/* ============================================================\n   HLH Cluster Page 07 \u2013 Aluminum Oxide Blast Media for Aerospace & Medical\n   Jiangsu Henglihong Technology Co., Ltd.\n   March 2026\n   ============================================================ *\/\n\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');\n\n  :root {\n    --navy:      #0d1b2a;\n    --steel:     #1e3a5f;\n    --sky:       #2176ae;\n    --sky-dk:    #155d8a;\n    --ice:       #e8f4fd;\n    --amber:     #d97706;\n    --amber-lt:  #fef3c7;\n    --green:     #166534;\n    --green-lt:  #dcfce7;\n    --slate:     #334155;\n    --slate-lt:  #f1f5f9;\n    --slate-bd:  #cbd5e1;\n    --teal:      #0f766e;\n    --teal-lt:   #f0fdfa;\n    --teal-bd:   #99f6e4;\n    --crimson:   #9f1239;\n    --crimson-lt:#fff1f2;\n    --crimson-bd:#fecdd3;\n    --sand:      #f5f0e8;\n    --white:     #ffffff;\n    --gray-50:   #f8f8f6;\n    --gray-100:  #efefec;\n    --gray-500:  #8a8a80;\n    --gray-700:  #454540;\n    --radius:    6px;\n    --shadow:    0 2px 20px rgba(13,27,42,.07);\n    --shadow-lg: 0 8px 40px rgba(13,27,42,.13);\n    --font-head: 'Playfair Display', Georgia, serif;\n    --font-body: 'DM Sans', system-ui, sans-serif;\n    --font-mono: 'DM Mono', monospace;\n  }\n\n  .hlh-c7 *, .hlh-c7 *::before, .hlh-c7 *::after { box-sizing: border-box; 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transition: background .12s; }\n  .gr-white { display:inline-block; font-size:.7rem; font-weight:600; background:#f0f4ff; color:#1e3a8a; border:1px solid #c7d6f7; border-radius:3px; padding:.06rem .45rem; white-space:nowrap; }\n  .c-yes { color: #166534; font-weight: 600; }\n  .c-no  { color: #991b1b; font-weight: 600; }\n  .c-mid { color: #92400e; font-weight: 600; }\n\n  \/* \u2500\u2500 FAQ \u2500\u2500 *\/\n  .faq-item { border-bottom: 1px solid var(--gray-100); }\n  .faq-q {\n    width: 100%; text-align: left; background: none; border: none;\n    padding: .9rem 0; font-family: var(--font-body); font-size: .97rem;\n    font-weight: 600; color: var(--navy); cursor: pointer;\n    display: flex; justify-content: space-between;\n    align-items: flex-start; gap: .55rem; line-height: 1.4;\n  }\n  .faq-q:hover { color: var(--sky); }\n  .faq-icon { font-size: 1.2rem; color: var(--sky); flex-shrink: 0; transition: transform .25s; margin-top: .1rem; }\n  .faq-a { display: none; padding-bottom: .95rem; font-size: .92rem; line-height: 1.72; }\n  .faq-item.open .faq-a    { display: block; }\n  .faq-item.open .faq-icon { transform: rotate(45deg); }\n\n  \/* \u2500\u2500 Divider \/ CTA \/ Links \u2500\u2500 *\/\n  .hr { border: none; border-top: 1px solid var(--gray-100); margin: 2.3rem 0; }\n  .cta-block {\n    background: linear-gradient(135deg, var(--navy) 0%, #0a2240 100%);\n    border-radius: 12px; padding: 2.4rem 1.8rem;\n    text-align: center; margin-top: 2.8rem;\n  }\n  .cta-block h2 {\n    font-family: var(--font-head); font-size: 1.6rem; font-weight: 600;\n    color: var(--white); border: none; margin-top: 0; padding: 0;\n  }\n  .cta-block p { color: rgba(255,255,255,.82); max-width: 520px; margin: .65rem auto 1.4rem; }\n  .cta-block .btn-row { justify-content: center; }\n  .more-links { list-style: none; padding: 0; margin: .75rem 0; }\n  .more-links li { padding: .46rem 0; border-bottom: 1px solid var(--gray-100); font-size: .93rem; }\n  .more-links li:last-child { border-bottom: none; }\n  .more-links a::before { content: \"\u2192  \"; color: var(--sky); font-weight: 600; }\n\n  \/* \u2500\u2500 Responsive \u2500\u2500 *\/\n  @media (max-width: 640px) {\n    .c7-hero { padding: 1.7rem 1rem 1.5rem; }\n    .hlh-c7 h2 { font-size: 1.28rem; }\n    .kf-bar { grid-template-columns: repeat(2, 1fr); }\n    .sector-grid { grid-template-columns: 1fr; }\n    .app-grid { grid-template-columns: 1fr; }\n    .std-grid { grid-template-columns: 1fr 1fr; }\n    .btn-row { flex-direction: column; }\n    .btn { text-align: center; }\n  }\n  @media (max-width: 400px) {\n    .std-grid { grid-template-columns: 1fr; }\n  }\n<\/style>\n\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\n     CLUSTER 07: Aluminum Oxide Blast Media for Aerospace & Medical\n     Jiangsu Henglihong Technology Co., Ltd.\n     March 2026\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 -->\n<div class=\"hlh-c7\">\n\n  <!-- \u2500\u2500 HERO \u2500\u2500 -->\n  <div class=\"c7-hero\">\n    <h1>Aluminum Oxide Blast Media for Aerospace &amp; Medical Applications<\/h1>\n    <p class=\"hero-sub\">White fused aluminum oxide is the industry-standard abrasive for the world&#8217;s most demanding surface preparation specifications \u2014 from MRO stripping of aircraft coatings to osseointegration surface texturing on orthopedic implants. This guide covers the technical requirements, governing standards, and supply chain protocols that aerospace and medical procurement teams need.<\/p>\n   \n    <div class=\"hero-meta\">\n      <span>By Jiangsu Henglihong Technology Co., Ltd.<\/span>\n      <span>March 2026<\/span>\n      <span>~4,500 words \u00b7 17 min read<\/span>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500 TOC \u2500\u2500 -->\n  <div class=\"toc-box\">\n    <div class=\"toc-title\">Table of Contents<\/div>\n    <ol>\n      <li><a href=\"#why-critical\">Why These Industries Demand Exceptional Abrasive Purity<\/a><\/li>\n      <li><a href=\"#aerospace-applications\">Aerospace Applications: MRO, Airframe &amp; Turbine<\/a><\/li>\n      <li><a href=\"#medical-applications\">Medical &amp; Dental Applications<\/a><\/li>\n      <li><a href=\"#governing-standards\">Governing Standards &amp; Specifications<\/a><\/li>\n      <li><a href=\"#material-requirements\">Material Requirements: What the Specifications Actually Demand<\/a><\/li>\n      <li><a href=\"#substrate-guide\">Substrate-by-Substrate Blast Parameters<\/a><\/li>\n      <li><a href=\"#supply-chain\">Supply Chain &amp; Documentation Requirements<\/a><\/li>\n      <li><a href=\"#process-control\">Process Control for Critical Applications<\/a><\/li>\n      <li><a href=\"#faq\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/a><\/li>\n    <\/ol>\n  <\/div>\n\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 -->\n  <!-- SECTION 1 \u2013 Why Critical           -->\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 -->\n  <h2 id=\"why-critical\">1. Why These Industries Demand Exceptional Abrasive Purity<\/h2>\n\n  <p>In most industrial blasting applications, the primary performance criteria for blast media are cutting speed, anchor profile consistency, and cost per square meter. In aerospace and medical device manufacturing, a fourth criterion dominates all others: <strong>the absolute prohibition of surface contamination from the abrasive itself.<\/strong><\/p>\n\n  <p>Both sectors work with materials \u2014 high-strength aluminum alloys, titanium alloys, nickel superalloys, cobalt-chromium \u2014 whose performance depends on maintaining the integrity of native protective surface films and metallurgical microstructure. The failure mechanisms introduced by iron contamination are distinctly different in each sector but equally consequential in both:<\/p>\n\n  <div class=\"sector-grid\">\n    <div class=\"sector-card aero\">\n      <div class=\"sector-badge badge-aero\">\u0410\u044d\u0440\u043e\u043a\u043e\u0441\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u043e\u0441\u0442\u044c<\/div>\n      <div class=\"sector-name\">Corrosion &amp; Fatigue Risk<\/div>\n      <div class=\"sector-body\">Iron particles from brown-grade abrasive embedded in aluminum or titanium airframe components create micro-galvanic cells at iron-alloy interfaces. In aerospace alloys (7075-T6, 2024-T3, Ti-6Al-4V), this initiates corrosion pitting that propagates under cyclic fatigue loading \u2014 potentially nucleating fatigue cracks at stress concentrations. For flight-critical structure, any undetected fatigue crack initiation site is a safety issue. Zero iron contamination tolerance is therefore not over-specification \u2014 it reflects the actual failure physics of the materials involved.<\/div>\n    <\/div>\n    <div class=\"sector-card med\">\n      <div class=\"sector-badge badge-med\">Medical &amp; Dental<\/div>\n      <div class=\"sector-name\">Biocompatibility &amp; Osseointegration Risk<\/div>\n      <div class=\"sector-body\">Medical implants must pass rigorous biocompatibility testing under ISO 10993. Iron particles embedded in titanium or cobalt-chromium implant surfaces from iron-bearing abrasives can trigger inflammatory responses in peri-implant tissue, compromise the passive titanium oxide film responsible for biocompatibility, and interfere with osseointegration \u2014 the biological bonding of implant to bone that determines long-term implant success. Regulatory frameworks in the USA (FDA 21 CFR Part 820), EU (MDR 2017\/745), and internationally require documented process validation including abrasive media qualification.<\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"kf-bar\">\n    <div class=\"kf-cell\">\n      <span class=\"kf-val\">\u2265 99.5%<\/span>\n      <span class=\"kf-lbl\">Al\u2082O\u2083 purity required<\/span>\n    <\/div>\n    <div class=\"kf-cell\">\n      <span class=\"kf-val\">&lt; 0.05%<\/span>\n      <span class=\"kf-lbl\">Max Fe\u2082O\u2083 (white grade)<\/span>\n    <\/div>\n    <div class=\"kf-cell\">\n      <span class=\"kf-val\">AMS 2431<\/span>\n      <span class=\"kf-lbl\">Primary aerospace standard<\/span>\n    <\/div>\n    <div class=\"kf-cell\">\n      <span class=\"kf-val\">ISO 13485<\/span>\n      <span class=\"kf-lbl\">Medical QMS baseline<\/span>\n    <\/div>\n    <div class=\"kf-cell\">\n      <span class=\"kf-val\">Lot CoA<\/span>\n      <span class=\"kf-lbl\">Required every shipment<\/span>\n    <\/div>\n  <\/div>\n\n  <p>This guide covers the technical and documentary requirements for white fused aluminum oxide in both sectors. For the broader product context including brown fused grade and general industrial applications, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-blast-media-complete-buyers-guide\/\" target=\"_blank\">Aluminum Oxide Blast Media: The Complete Buyer&#8217;s Guide<\/a>.<\/p>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 2 \u2013 Aerospace Applications -->\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 -->\n  <h2 id=\"aerospace-applications\">2. Aerospace Applications: MRO, Airframe &amp; Turbine<\/h2>\n\n  <p>Aluminum oxide blast media serves three distinct functional roles in aerospace manufacturing and maintenance \u2014 each with its own performance requirements, substrate sensitivities, and governing specifications.<\/p>\n\n  <div class=\"app-grid\">\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">MRO<\/div>\n      <div class=\"app-name\">Aircraft Paint Stripping<\/div>\n      <div class=\"app-body\">Removal of aircraft topcoats, primers, and sealants from aluminum and composite airframe panels during scheduled maintenance. Must remove coating completely without distorting thin-gauge aluminum skin panels (typically 0.8\u20132.0 mm), inducing residual tensile stress, or embedding abrasive particles that could cause corrosion in service. Precise pressure and standoff control is essential.<\/div>\n      <span class=\"app-spec\">F80\u2013F120 \u00b7 White \u00b7 30\u201350 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">Airframe<\/div>\n      <div class=\"app-name\">Structural Bond Preparation<\/div>\n      <div class=\"app-body\">Surface preparation of aluminum and titanium airframe components before structural adhesive bonding \u2014 used in splice joints, doublers, and repair patches. Blasting creates the surface micro-roughness and surface energy required for optimal adhesive bond strength. Must comply with Boeing, Airbus, or OEM-specific process specifications that typically call out white fused Al\u2082O\u2083 by name.<\/div>\n      <span class=\"app-spec\">F120\u2013F180 \u00b7 White \u00b7 25\u201345 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">Turbine<\/div>\n      <div class=\"app-name\">Thermal Barrier Coating Prep<\/div>\n      <div class=\"app-body\">Preparation of nickel superalloy turbine blades and vanes before thermal spray application of bond coat and thermal barrier coating (TBC) systems. Blasting creates the anchor profile required for MCrAlY bond coat adhesion. Contamination-free surface mandatory \u2014 iron from brown-grade abrasive can oxidize during TBC application (1,000 \u00b0C+) and disrupt coating adhesion.<\/div>\n      <span class=\"app-spec\">F36\u2013F60 \u00b7 White \u00b7 50\u201370 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">Turbine<\/div>\n      <div class=\"app-name\">Shot Peening &amp; Stress Peening<\/div>\n      <div class=\"app-body\">Controlled blasting of turbine disk bore, blade root, and compressor blade surfaces to induce compressive residual stress, improving fatigue life under high-cycle loading. Aluminum oxide is used where the peening intensity (Almen arc height) and coverage requirements call for a harder media than cast steel shot \u2014 typically on titanium and nickel alloy components where steel contamination is unacceptable.<\/div>\n      <span class=\"app-spec\">F80\u2013F120 \u00b7 White \u00b7 Per AMS 2432<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">Defense<\/div>\n      <div class=\"app-name\">Aluminum Alloy Component Prep<\/div>\n      <div class=\"app-body\">Surface preparation of aluminum alloy structural and rotary-wing components for primer application in military and civil aviation. US military specifications MIL-A-22262 and MIL-DTL-5541 for chromate conversion coating require a clean, uncontaminated aluminum surface \u2014 achievable only with white fused aluminum oxide at correct grit and pressure.<\/div>\n      <span class=\"app-spec\">F60\u2013F120 \u00b7 White \u00b7 35\u201355 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-aero\">Space<\/div>\n      <div class=\"app-name\">Spacecraft Component Preparation<\/div>\n      <div class=\"app-body\">Surface preparation of aluminum and titanium spacecraft structural components and thermal control surfaces. Cleanliness requirements are more stringent than standard aviation \u2014 outgassing from residual contaminants in orbit can deposit on optical surfaces or sensitive electronics. White fused Al\u2082O\u2083 is preferred over all other abrasives for its combined chemical inertness and near-zero outgassing potential.<\/div>\n      <span class=\"app-spec\">F80\u2013F150 \u00b7 White \u00b7 30\u201350 PSI<\/span>\n    <\/div>\n\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 3 \u2013 Medical Applications   -->\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 -->\n  <h2 id=\"medical-applications\">3. Medical &amp; Dental Applications<\/h2>\n\n  <p>Medical device surface preparation with aluminum oxide spans a range from macro-scale orthopedic implants to micro-scale dental ceramic components \u2014 united by the requirement for precise, reproducible surface topography, zero metallic contamination, and full process traceability documentation.<\/p>\n\n  <div class=\"app-grid\">\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Orthopedics<\/div>\n      <div class=\"app-name\">Hip &amp; Knee Implant Texturing<\/div>\n      <div class=\"app-body\">Titanium (Ti-6Al-4V ELI) and cobalt-chromium alloy hip cups, femoral stems, and tibial trays require a precisely controlled surface topography to promote osseointegration \u2014 the biological bonding of implant surface to bone. White fused Al\u2082O\u2083 at F120\u2013F220 produces the Ra 1\u20134 \u00b5m surface texture shown in clinical literature to optimize bone ingrowth on porous-coated and grit-blasted implant surfaces.<\/div>\n      <span class=\"app-spec\">F120\u2013F220 \u00b7 White \u00b7 40\u201360 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Orthopedics<\/div>\n      <div class=\"app-name\">Spinal Implant &amp; Bone Screw Prep<\/div>\n      <div class=\"app-body\">Titanium spinal cages, interbody fusion devices, and bone screws. Grit-blasted titanium surfaces significantly outperform machined smooth surfaces in osseointegration studies \u2014 blasting increases surface area available for bone cell adhesion and promotes protein adsorption favorable to osteoblast attachment and proliferation.<\/div>\n      <span class=\"app-spec\">F150\u2013F220 \u00b7 White \u00b7 35\u201355 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Dental<\/div>\n      <div class=\"app-name\">Dental Implant Surface Treatment<\/div>\n      <div class=\"app-body\">Titanium dental implants (Grade 4 cp-Ti or Ti-6Al-4V) require surface micro-roughness for bone-to-implant contact (BIC) optimization. White fused Al\u2082O\u2083 at F150\u2013F220 produces the Sa 1\u20132 \u00b5m surface roughness range shown in systematic reviews to correlate with optimal peri-implant bone response. Often combined with acid-etching (SLA surface) for dual micro\/nano-scale topography.<\/div>\n      <span class=\"app-spec\">F150\u2013F220 \u00b7 White \u00b7 25\u201350 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Dental Lab<\/div>\n      <div class=\"app-name\">Ceramic Crown Bonding Prep<\/div>\n      <div class=\"app-body\">Surface preparation of porcelain-fused-to-metal (PFM) and all-ceramic (zirconia, lithium disilicate) restorations before application of dental bonding agents and resin cements. Blasting removes surface contamination and creates micro-retentive surface texture that increases bonding surface area and mechanical adhesion of resin cement to ceramic substrate.<\/div>\n      <span class=\"app-spec\">F100\u2013F180 \u00b7 White \u00b7 25\u201350 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Cardiovascular<\/div>\n      <div class=\"app-name\">Vascular Implant &amp; Stent Prep<\/div>\n      <div class=\"app-body\">Surface preparation of titanium and nitinol vascular implants, cardiac assist device components, and stent delivery systems. Biocompatibility requirements under ISO 10993 are stringent \u2014 any metal contamination from the abrasive must be quantifiable and within defined limits. White fused Al\u2082O\u2083 is specified for its chemical inertness and near-zero iron content (&lt; 0.05% Fe\u2082O\u2083).<\/div>\n      <span class=\"app-spec\">F150\u2013F220 \u00b7 White \u00b7 30\u201350 PSI<\/span>\n    <\/div>\n\n    <div class=\"app-card\">\n      <div class=\"app-tag tag-med\">Surgical<\/div>\n      <div class=\"app-name\">Surgical Instrument Preparation<\/div>\n      <div class=\"app-body\">Matte surface finishing of stainless steel surgical instruments (laparoscopic, orthopedic, general surgery) to reduce glare under surgical lighting and improve tactile grip. White fused Al\u2082O\u2083 produces a consistent, uniform matte finish that meets both functional and aesthetic requirements. Unlike brown grade, it leaves no iron residue that could compromise sterilization or biocompatibility assessments.<\/div>\n      <span class=\"app-spec\">F120\u2013F220 \u00b7 White \u00b7 30\u201350 PSI<\/span>\n    <\/div>\n\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 4 \u2013 Governing Standards    -->\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 -->\n  <h2 id=\"governing-standards\">4. Governing Standards &amp; Specifications<\/h2>\n\n  <p>Aerospace and medical procurement specifications form a dense, interlocking framework of international standards, OEM process specifications, and regulatory requirements. The standards below are the most commonly encountered in procurement for white fused aluminum oxide blast media in these sectors.<\/p>\n\n  <div class=\"std-grid\">\n    <div class=\"std-card\">\n      <div class=\"std-id\">AMS 2431<\/div>\n      <div class=\"std-name\">Peening Media, General Requirements<\/div>\n      <div class=\"std-desc\">The primary SAE Aerospace Material Specification governing abrasive blast media used in peening and cleaning of aerospace components. Specifies chemical composition, particle size, and hardness requirements for approved media types including aluminum oxide.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">AMS 2431\/9<\/div>\n      <div class=\"std-name\">Aluminum Oxide Blast Media<\/div>\n      <div class=\"std-desc\">The aluminum-oxide-specific sub-specification of AMS 2431. Defines minimum Al\u2082O\u2083 purity (\u2265 99.5%), maximum Fe\u2082O\u2083 (&lt; 0.1%), particle size distribution, and hardness requirements for aerospace-qualified aluminum oxide blast media.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">AMS 2432<\/div>\n      <div class=\"std-name\">Shot Peening \u2014 Computer Monitored<\/div>\n      <div class=\"std-desc\">Governing specification for computer-controlled shot peening processes. Applicable when aluminum oxide is used for peening of turbine components \u2014 defines Almen arc height, coverage, and saturation requirements alongside media specification.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">MIL-A-22262<\/div>\n      <div class=\"std-name\">Abrasive Blasting Media, Aluminum Oxide<\/div>\n      <div class=\"std-desc\">US military specification for aluminum oxide blast media used in defense aerospace programs. Pre-dates AMS 2431 but still cited in legacy US Navy and Air Force maintenance documentation. Specifies equivalent purity and particle size requirements.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">Boeing D6-17487<\/div>\n      <div class=\"std-name\">Boeing Process Standard<\/div>\n      <div class=\"std-desc\">Boeing&#8217;s internal process specification for abrasive blast cleaning of aluminum structures. Prohibits iron-bearing abrasives on all aluminum airframe components and specifies white fused aluminum oxide by name for compliance. Referenced in Boeing supplier quality requirements.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">NADCAP<\/div>\n      <div class=\"std-name\">National Aerospace &amp; Defense Contractors Accreditation Program<\/div>\n      <div class=\"std-desc\">Third-party accreditation body auditing special processes in the aerospace supply chain, including surface treatment. NADCAP-accredited blast shops are required by Tier 1 OEMs. Media qualification documentation is a mandatory audit item.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">ISO 13485:2016<\/div>\n      <div class=\"std-name\">Medical Devices \u2014 QMS Requirements<\/div>\n      <div class=\"std-desc\">The quality management system standard for medical device manufacturers. Requires documented supplier qualification, incoming material verification, and process validation for all materials \u2014 including abrasive blast media \u2014 used in device manufacturing or surface treatment.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">ISO 10993<\/div>\n      <div class=\"std-name\">Biological Evaluation of Medical Devices<\/div>\n      <div class=\"std-desc\">Multi-part standard covering biocompatibility testing of medical devices. Relevant to blast media selection because residual abrasive particles on implant surfaces are considered a biocompatibility risk. White fused Al\u2082O\u2083 is biocompatible and is referenced in implant surface preparation literature.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">FDA 21 CFR 820<\/div>\n      <div class=\"std-name\">Quality System Regulation (US FDA)<\/div>\n      <div class=\"std-desc\">US FDA regulation governing quality management for medical device manufacturers. Requires design controls, purchasing controls (supplier qualification), and process validation for all manufacturing processes. Abrasive blast media used in implant surface preparation falls under these requirements.<\/div>\n    <\/div>\n    <div class=\"std-card\">\n      <div class=\"std-id\">EU MDR 2017\/745<\/div>\n      <div class=\"std-name\">EU Medical Device Regulation<\/div>\n      <div class=\"std-desc\">European regulatory framework governing medical device manufacturing and supply chains. Requires technical documentation demonstrating that all manufacturing processes \u2014 including surface preparation \u2014 meet defined safety and performance requirements. Superseded the Medical Device Directive (MDD) from May 2021.<\/div>\n    <\/div>\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 5 \u2013 Material Requirements  -->\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 -->\n  <h2 id=\"material-requirements\">5. Material Requirements: What the Specifications Actually Demand<\/h2>\n\n  <p>Working through the aerospace and medical standards reveals a consistent set of material requirements that any qualified aluminum oxide blast media must meet. The table below consolidates these requirements for practical procurement use.<\/p>\n\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead>\n        <tr>\n          <th>Property<\/th>\n          <th>AMS 2431\/9 Requirement<\/th>\n          <th>Medical \/ ISO 13485 Requirement<\/th>\n          <th>HLH White Fused Al\u2082O\u2083 Value<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td><strong>Al\u2082O\u2083 Purity<\/strong><\/td>\n          <td>\u2265 99.5%<\/td>\n          <td>\u2265 99.5% (supplier specified)<\/td>\n          <td><span class=\"c-yes\">\u2265 99.5%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Fe\u2082O\u2083 (Free Iron)<\/strong><\/td>\n          <td>\u2264 0.10%<\/td>\n          <td>\u2264 0.05% (most implant specs)<\/td>\n          <td><span class=\"c-yes\">&lt; 0.05%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>SiO\u2082<\/strong><\/td>\n          <td>\u2264 0.30%<\/td>\n          <td>\u2264 0.10%<\/td>\n          <td><span class=\"c-yes\">&lt; 0.10%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Na\u2082O<\/strong><\/td>\n          <td>\u2264 0.50%<\/td>\n          <td>\u2264 0.35%<\/td>\n          <td><span class=\"c-yes\">&lt; 0.35%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Particle Size Distribution<\/strong><\/td>\n          <td>FEPA 42-2 F-grits tolerance<\/td>\n          <td>Per drawing \/ supplier spec<\/td>\n          <td><span class=\"c-yes\">FEPA certified, lot sieve analysis<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>\u0422\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c<\/strong><\/td>\n          <td>Mohs \u2265 9.0<\/td>\n          <td>Supplier specified<\/td>\n          <td><span class=\"c-yes\">Mohs 9.0, 2,000\u20132,200 HV<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u0432\u043b\u0430\u0433\u0438<\/strong><\/td>\n          <td>\u2264 0.50%<\/td>\n          <td>\u2264 0.15%<\/td>\n          <td><span class=\"c-yes\">\u2264 0.15%<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Certificate of Analysis<\/strong><\/td>\n          <td>Required \u2014 lot-specific<\/td>\n          <td>Required \u2014 lot-specific, retained<\/td>\n          <td><span class=\"c-yes\">Provided every shipment<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Supplier Quality Certification<\/strong><\/td>\n          <td>ISO 9001:2015 minimum<\/td>\n          <td>ISO 13485 preferred \/ ISO 9001 minimum<\/td>\n          <td><span class=\"c-yes\">ISO 9001:2015 certified<\/span><\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Traceability to production lot<\/strong><\/td>\n          <td>Required<\/td>\n          <td>Required \u2014 lot number on CoA and packaging<\/td>\n          <td><span class=\"c-yes\">Full lot traceability<\/span><\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"crimson-box\">\n    <strong>Critical specification warning \u2014 AMS 2431\/9 vs AMS 2431:<\/strong> AMS 2431 is the parent specification covering all peening media types. AMS 2431\/9 is the aluminum-oxide-specific sub-specification with its own chemical and physical requirements. When a drawing or purchase order calls out &#8220;AMS 2431&#8221; without a slash extension, confirm with the responsible engineer which sub-specification applies before ordering. Ordering to AMS 2431 without the \/9 suffix leaves the media type unspecified \u2014 a frequent source of specification compliance disputes in aerospace supply chains.\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 6 \u2013 Substrate Guide        -->\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 -->\n  <h2 id=\"substrate-guide\">6. Substrate-by-Substrate Blast Parameters<\/h2>\n\n  <p>Each alloy type used in aerospace and medical applications has specific blast parameter requirements \u2014 driven by its hardness, its sensitivity to induced residual stress, and the surface finish or anchor profile requirements of the subsequent process (coating, bonding, or osseointegration).<\/p>\n\n  <div class=\"hlh-table-wrap\">\n    <table class=\"hlh-table\">\n      <thead>\n        <tr>\n          <th>Substrate<\/th>\n          <th>Alloy Examples<\/th>\n          <th>Grade<\/th>\n          <th>Grit<\/th>\n          <th>Pressure<\/th>\n          <th>Standoff<\/th>\n          <th>Key Constraint<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td><strong>Aluminum alloys \u2014 airframe<\/strong><\/td>\n          <td>2024-T3, 7075-T6, 6061-T6<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F80\u2013F120<\/td>\n          <td>35\u201355 PSI<\/td>\n          <td>15\u201325 cm<\/td>\n          <td>Max pressure critical \u2014 thin gauge distorts; avoid over-blasting<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Titanium \u2014 aerospace<\/strong><\/td>\n          <td>Ti-6Al-4V, Ti-3Al-2.5V<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F80\u2013F150<\/td>\n          <td>40\u201365 PSI<\/td>\n          <td>15\u201325 cm<\/td>\n          <td>AMS 2431\/9; no iron contamination; check for alpha-case formation<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Nickel superalloy \u2014 turbine<\/strong><\/td>\n          <td>IN718, IN625, Waspaloy, Ren\u00e9 80<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F46\u2013F80<\/td>\n          <td>50\u201375 PSI<\/td>\n          <td>15\u201325 cm<\/td>\n          <td>TBC bond coat prep: Rz 50\u201375 \u00b5m required; purity critical at process temp<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Titanium \u2014 medical implant<\/strong><\/td>\n          <td>Ti-6Al-4V ELI (Grade 23), cp-Ti Grade 4<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F120\u2013F220<\/td>\n          <td>25\u201355 PSI<\/td>\n          <td>10\u201320 cm<\/td>\n          <td>Target Sa 1\u20134 \u00b5m; lot CoA + traceability mandatory; ISO 13485 compliant supplier<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Cobalt-chromium \u2014 orthopedics<\/strong><\/td>\n          <td>CoCrMo (ASTM F75, F1537)<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F120\u2013F180<\/td>\n          <td>40\u201360 PSI<\/td>\n          <td>12\u201320 cm<\/td>\n          <td>Harder than Ti \u2014 may need slightly higher pressure; Fe\u2082O\u2083 &lt; 0.05% critical<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Zirconia \u2014 dental<\/strong><\/td>\n          <td>Y-TZP (3 mol% yttria-stabilized)<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F120\u2013F180<\/td>\n          <td>25\u201340 PSI<\/td>\n          <td>10\u201315 cm<\/td>\n          <td>Avoid transformation of zirconia surface phase; validate with XRD if critical<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Stainless steel \u2014 surgical instruments<\/strong><\/td>\n          <td>316L, 17-4 PH, 440C<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F120\u2013F220<\/td>\n          <td>30\u201355 PSI<\/td>\n          <td>12\u201320 cm<\/td>\n          <td>White grade mandatory; matte finish uniformity critical; ferroxyl test recommended<\/td>\n        <\/tr>\n        <tr>\n          <td><strong>Nitinol (NiTi) \u2014 cardiovascular<\/strong><\/td>\n          <td>Nickel-titanium shape memory alloy<\/td>\n          <td><span class=\"gr-white\">\u0411\u0435\u043b\u044b\u0439<\/span><\/td>\n          <td>F150\u2013F220<\/td>\n          <td>25\u201345 PSI<\/td>\n          <td>10\u201318 cm<\/td>\n          <td>Extremely sensitive to surface damage \u2014 validate parameters on sample pieces first<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <div class=\"warn-box\">\n    <strong>Zirconia phase transformation caution:<\/strong> Yttria-stabilized zirconia (Y-TZP) can undergo a tetragonal-to-monoclinic phase transformation under surface stress \u2014 a phenomenon called low-temperature degradation (LTD) or hydrothermal aging. High-pressure blasting accelerates surface phase transformation and can degrade long-term mechanical properties. For zirconia dental ceramics, validate blast parameters with X-ray diffraction (XRD) analysis of blasted samples before establishing production parameters. Use the lowest pressure that achieves the required surface roughness for dental bonding applications.\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 7 \u2013 Supply Chain           -->\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 -->\n  <h2 id=\"supply-chain\">7. Supply Chain &amp; Documentation Requirements<\/h2>\n\n  <p>In aerospace and medical supply chains, the qualification and documentation requirements placed on blast media suppliers are substantially more demanding than in general industrial procurement. The following represents the minimum documentation package that Tier 1 aerospace and medical OEM suppliers typically require from their blast media vendors.<\/p>\n\n  <ul class=\"doc-list\">\n    <li>\n      <div class=\"doc-bullet\">1<\/div>\n      <div><strong>Lot-specific Certificate of Analysis (CoA):<\/strong> Every shipment must be accompanied by a CoA tied to the specific production lot number, reporting Al\u2082O\u2083 purity, Fe\u2082O\u2083, SiO\u2082, Na\u2082O, moisture content, bulk density, and sieve analysis (D10\/D50\/D90 and sieve stack data). Generic or time-stamped CoAs not referencing a specific lot are non-conforming to aerospace and medical requirements.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">2<\/div>\n      <div><strong>ISO 9001:2015 quality management certification:<\/strong> Current, valid, third-party-audited QMS certificate. Aerospace supply chains increasingly require suppliers to also hold AS9100 or be working toward it. Medical device supply chains may additionally require ISO 13485 compliance for consumables used in device manufacturing.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">3<\/div>\n      <div><strong>FEPA particle size distribution certification:<\/strong> Sieve analysis data per FEPA 42-2 standards for F-grits, confirming the particle size distribution meets FEPA tolerance for the specified grit designation. Some aerospace programs additionally specify a tighter internal distribution tolerance than FEPA \u2014 confirm this before ordering.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">4<\/div>\n      <div><strong>Material Safety Data Sheet (SDS \/ MSDS):<\/strong> Current REACH-compliant SDS confirming the media classification, hazard information, and disposal requirements. For medical device manufacturers, the SDS supports the biocompatibility risk assessment file required under ISO 10993.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">5<\/div>\n      <div><strong>Conformance statement to AMS 2431\/9 or equivalent:<\/strong> A written statement from the manufacturer confirming that the product meets the chemical and physical requirements of the applicable specification. This statement is distinct from the CoA \u2014 it is a formal specification compliance declaration, not just a test result report.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">6<\/div>\n      <div><strong>Packaging lot number traceability:<\/strong> Each bag, pail, or bulk container must be labeled with a lot number that links back to the CoA. For aerospace programs, the lot number is recorded on the work order and retained in the component&#8217;s traveler documentation for the life of the aircraft.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">7<\/div>\n      <div><strong>First Article \/ Qualification test report (when required):<\/strong> For new supplier qualification or new product introductions, some aerospace and medical OEMs require a full first-article inspection report with third-party chemical and physical test data. Jiangsu Henglihong Technology supports first-article testing requests and can provide samples for customer laboratory verification.<\/div>\n    <\/li>\n    <li>\n      <div class=\"doc-bullet\">8<\/div>\n      <div><strong>Counterfeit prevention declaration:<\/strong> Aerospace supply chains increasingly require a statement confirming that materials are not counterfeit or misrepresented \u2014 i.e., that the media is genuinely the specified product from the manufacturer named on the packaging, not relabeled bulk commodity.<\/div>\n    <\/li>\n  <\/ul>\n\n  <div class=\"success-box\">\n    <strong>Jiangsu Henglihong Technology documentation capability:<\/strong> HLH provides lot-specific CoA with every shipment as standard, supports third-party laboratory verification by SGS, Bureau Veritas, or customer-nominated labs, and can provide FEPA particle size distribution certificates and conformance statements for AMS 2431\/9 and EN ISO 11126-7 on request. Contact our export team for a documentation sample package before placing your first qualification order.\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 8 \u2013 Process Control        -->\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 -->\n  <h2 id=\"process-control\">8. Process Control for Critical Applications<\/h2>\n\n  <p>Specifying the correct media is necessary but not sufficient for aerospace and medical compliance. The blasting process itself must be controlled, validated, and documented to demonstrate that the specified surface condition is consistently achieved. The following process control framework reflects the requirements of NADCAP-audited blast shops and ISO 13485-regulated implant manufacturers.<\/p>\n\n  <div class=\"proc-flow\">\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">1<\/div>\n      <div>\n        <div class=\"pf-title\">Equipment qualification and calibration<\/div>\n        <div class=\"pf-body\">Before any critical blasting, verify blast cabinet pressure gauges, regulators, and flow controls against calibrated reference instruments. For peening applications, verify the Almen strip test system (strip holder, gauge, and calibration blocks) to AMS 2432 requirements. Record calibration results in the process traveler. Recalibrate at the interval specified in your quality procedure \u2014 typically monthly or at each process change.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">2<\/div>\n      <div>\n        <div class=\"pf-title\">Media incoming inspection<\/div>\n        <div class=\"pf-body\">On receipt, verify the lot number on each container against the CoA. Confirm visual identity (white color, no brown contamination or foreign material). For critical aerospace programs, perform incoming sieve analysis on a representative sample from each lot, confirm D50 \u00b1 tolerance against the CoA value, and retain the sample for the record period. Quarantine and return any lot where the CoA chemistry falls outside specification limits.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">3<\/div>\n      <div>\n        <div class=\"pf-title\">Dedicated equipment for critical substrates<\/div>\n        <div class=\"pf-body\">Blast cabinets used for aerospace aluminum, titanium, or medical implant blasting must be dedicated to white fused aluminum oxide only \u2014 or must be verified clean before each use by running a visible inspection and a media purity check. Never use the same equipment that was previously loaded with brown fused aluminum oxide for a stainless steel or aluminum aerospace job without a full equipment purge and a verified white-media charge.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">4<\/div>\n      <div>\n        <div class=\"pf-title\">Process parameter validation<\/div>\n        <div class=\"pf-body\">Before running production parts, blast a coupon made from the same alloy as the production component at the specified parameters. Measure the resulting surface roughness (Ra or Sa using ISO 4287 or ISO 25178 as applicable) with a calibrated surface profilometer. Confirm the result meets the drawing or specification requirement. For implant surface preparation, this validation step must be formally documented as part of the process validation record per ISO 13485.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">5<\/div>\n      <div>\n        <div class=\"pf-title\">In-process monitoring<\/div>\n        <div class=\"pf-body\">Monitor blast pressure, nozzle condition, and media charge quality throughout each production run. For high-volume implant production, measure surface roughness on a statistical sample of parts \u2014 minimum frequency defined by the process validation \u2014 and record results in the batch record. For aerospace components, inspect each part after blasting and record the inspection result on the work traveler before releasing the part for the next operation.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">6<\/div>\n      <div>\n        <div class=\"pf-title\">Contamination verification<\/div>\n        <div class=\"pf-body\">For stainless steel and titanium aerospace and medical parts, perform a ferroxyl test (potassium ferricyanide indicator) on a representative sample after blasting and before any subsequent process step. A positive result (blue-green color change) indicates iron contamination \u2014 the part must be re-blasted with verified white media on clean equipment and re-tested before proceeding. Document the test result in the part traveler or batch record.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"pf-row\">\n      <div class=\"pf-num\">7<\/div>\n      <div>\n        <div class=\"pf-title\">Record retention<\/div>\n        <div class=\"pf-body\">Retain all process records \u2014 media CoA, equipment calibration records, coupon validation results, in-process inspection records, and batch records \u2014 for the period required by the applicable regulatory framework. For aerospace components, this is typically the service life of the aircraft (potentially 30+ years). For medical implants under EU MDR 2017\/745, a minimum of 15 years post-market or 2 years beyond the last device placed on the market, whichever is longer. Establish a document control procedure that ensures these records remain retrievable throughout their retention period.<\/div>\n      <\/div>\n    <\/div>\n\n  <\/div>\n\n  <hr class=\"hr\">\n\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 -->\n  <!-- SECTION 9 \u2013 FAQ                    -->\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 -->\n  <h2 id=\"faq\">9. Frequently Asked Questions<\/h2>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      Does AMS 2431\/9 require aluminum oxide to be sourced from a specific approved supplier list?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>AMS 2431\/9 defines material requirements \u2014 chemical composition, particle size distribution, and hardness \u2014 but does not maintain a qualified products list (QPL) of approved manufacturers in the way that some military specifications do. Compliance is demonstrated by the supplier providing a CoA showing that all specified properties are met, accompanied by a conformance statement to AMS 2431\/9. However, individual OEM purchase orders and process specifications may add approved supplier list (ASL) requirements beyond the base AMS 2431\/9 requirements. Always check the specific purchase order and referenced quality clauses for ASL requirements before qualifying a new blast media source in your supply chain.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      Can residual aluminum oxide particles on an implant surface cause biological problems?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>This is an important biocompatibility question extensively studied in the implant literature. Aluminum oxide (Al\u2082O\u2083) is itself considered biocompatible \u2014 it is used as a bulk material for orthopedic bearing surfaces (alumina ceramic femoral heads) \u2014 so the primary concern is not the chemical toxicity of alumina particles but rather the particle burden on peri-implant tissue. Studies have found that blasting with appropriately specified white fused Al\u2082O\u2083 followed by proper cleaning (typically ultrasonic cleaning in deionized water, then acid passivation if appropriate to the substrate) leaves residual alumina particle counts well below levels associated with adverse tissue response. Many implant manufacturers additionally specify a final acid-etch step (e.g. HCl or H\u2082SO\u2084\/HCl mixture) after blasting, which removes embedded abrasive particles from the surface entirely while preserving the surface micro-roughness created by blasting. The specific cleaning protocol should be validated as part of the process validation required by ISO 13485.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      What is the difference between grit blasting and shot peening for aerospace components?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>Both are blasting processes that use aluminum oxide (or other media) at controlled velocity \u2014 but they serve fundamentally different engineering purposes. Grit blasting is a surface preparation process: its goal is to clean the surface and create a defined surface topography (anchor profile or micro-roughness) for a subsequent process such as coating, bonding, or osseointegration. The primary output measured is surface cleanliness and surface roughness. Shot peening is a surface enhancement process: its goal is to plastically deform the near-surface layer to induce a compressive residual stress field that improves fatigue life and resistance to stress-corrosion cracking. The primary output measured is Almen arc height (a proxy for peening intensity) and coverage percentage. For peening, the media must be harder than the substrate and must be controlled to specific Almen intensity values \u2014 aluminum oxide is used for peening of titanium and nickel alloys where steel shot contamination is unacceptable.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      How should aluminum oxide blast media be handled and stored to maintain aerospace-grade cleanliness?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>Storage and handling practices for aerospace and medical blast media must be more controlled than for general industrial use. Store sealed in original manufacturer packaging \u2014 do not transfer to bulk drums or intermediate containers unless the transfer is performed in a clean room or controlled environment with documented procedures. Keep off the floor on pallets; protect from moisture and temperature cycling that causes condensation inside bags. Label storage location with lot number and expiry\/inspection date. Handle bags with clean gloves \u2014 contamination from handling equipment (forklifts, floor surfaces) can introduce foreign material into the media charge. Dedicate storage areas for white fused media away from any brown fused media or other iron-bearing abrasives, and implement a FIFO (first-in-first-out) inventory rotation. For highest-criticality applications (NADCAP-audited processes), document the storage conditions and handling chain from receipt to point of use as part of the process record.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      Is white fused aluminum oxide approved for use on carbon fiber reinforced polymer (CFRP) aerospace structures?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>Blast cleaning of CFRP (carbon fiber reinforced polymer) structures requires careful process development because the hard abrasive must clean the surface without damaging the fiber-matrix interface. White fused aluminum oxide at fine grit (F150\u2013F220) and low pressure (20\u201335 PSI) can be used for light surface preparation of CFRP before bonding or painting \u2014 but it is not appropriate for heavy cleaning or paint stripping, which risks fiber exposure and surface damage. Many aerospace OEMs prefer plastic media blast (PMB) or cryogenic blast for CFRP paint removal because these media are much softer than the carbon fiber reinforcement and remove only the paint without risking fiber damage. For CFRP surface preparation before bonding, peel ply removal followed by light grit blast or solvent wipe is the more commonly specified approach. Always verify with the OEM process specification before applying any abrasive blasting to CFRP components.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"faq-item\">\n    <button class=\"faq-q\" onclick=\"c7ToggleFaq(this)\">\n      How do I qualify Jiangsu Henglihong Technology as a blast media supplier for an aerospace program?\n      <span class=\"faq-icon\">+<\/span>\n    <\/button>\n    <div class=\"faq-a\">\n      <p>The qualification process typically involves three phases: documentary review, material testing, and process validation. For documentary review, Jiangsu Henglihong Technology can provide: current ISO 9001:2015 certificate, facility overview, quality manual excerpt, CoA template and sample, and written conformance statement to AMS 2431\/9. For material testing, we can supply a qualification sample lot with full CoA, and support third-party testing by your nominated laboratory (SGS, Bureau Veritas, Intertek, or equivalent) at your cost. For process validation, we provide material to your blast shop for the required coupon blast trials, surface measurement, and documentation of blast parameters. Contact our export and quality team to initiate a qualification package \u2014 we have supported aerospace supplier qualification processes in North America, Europe, and Asia and can guide you through the documentation requirements efficiently. See also our bulk ordering page: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/bulk-aluminum-oxide-blast-media-wholesale-pricing-rfq\/\" target=\"_blank\">Bulk Aluminum Oxide Blast Media \u2013 Wholesale Pricing &amp; RFQ<\/a>.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500 CTA \u2500\u2500 -->\n  <div class=\"cta-block\">\n    <h2>AMS 2431\/9 Qualified White Fused Aluminum Oxide<\/h2>\n    <p>Jiangsu Henglihong Technology supplies aerospace and medical-grade white fused aluminum oxide with lot-specific CoA, FEPA particle size certification, conformance statements to AMS 2431\/9, and ISO 9001:2015 quality management on every shipment. Contact our technical team to initiate supplier qualification.<\/p>\n    <div class=\"btn-row\">\n      <a class=\"btn btn-amber\" href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\">Request a Quote<\/a>\n      <a class=\"btn btn-ghost\" href=\"https:\/\/hlh-js.com\/products\/\" target=\"_blank\">View Products<\/a>\n    <\/div>\n  <\/div>\n\n  <!-- \u2500\u2500 Explore More \u2500\u2500 -->\n  <h2 style=\"margin-top:2.8rem;\">Related Resources<\/h2>\n  <p>Continue with these guides from the Henglihong resource library:<\/p>\n  <ul class=\"more-links\">\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-blast-media-complete-buyers-guide\/\" target=\"_blank\">Aluminum Oxide Blast Media: The Complete Buyer&#8217;s Guide<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/brown-vs-white-aluminum-oxide-which-should-you-use\/\" target=\"_blank\">Brown vs White Aluminum Oxide: Which Should You Use?<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-grit-size-chart-selection-guide\/\" target=\"_blank\">Aluminum Oxide Grit Size Chart &amp; Selection Guide<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-vs-garnet-blast-media-full-comparison\/\" target=\"_blank\">Aluminum Oxide vs Garnet Blast Media: Full Comparison<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-choose-aluminum-oxide-blast-media-for-steel-surfaces\/\" target=\"_blank\">How to Choose Aluminum Oxide Blast Media for Steel Surfaces<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/is-aluminum-oxide-blast-media-reusable-how-many-times\/\" target=\"_blank\">Is Aluminum Oxide Blast Media Reusable? How Many Times?<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-for-glass-etching-frosting\/\" target=\"_blank\">Aluminum Oxide for Glass Etching &amp; Frosting<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/bulk-aluminum-oxide-blast-media-wholesale-pricing-rfq\/\" target=\"_blank\">Bulk Aluminum Oxide Blast Media \u2013 Wholesale Pricing &amp; RFQ<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-anti-slip-additive-for-floor-coatings\/\" target=\"_blank\">Aluminum Oxide Anti-Slip Additive for Floor Coatings<\/a><\/li>\n  <\/ul>\n\n<\/div>\n\n<script>\nfunction c7ToggleFaq(btn) {\n  var item = btn.closest('.faq-item');\n  var isOpen = item.classList.contains('open');\n  document.querySelectorAll('.faq-item.open').forEach(function(el){ el.classList.remove('open'); });\n  if (!isOpen) { item.classList.add('open'); }\n}\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Aluminum Oxide Blast Media for Aerospace &amp; Medical Applications White  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12670,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-12647","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/12647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/comments?post=12647"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/12647\/revisions"}],"predecessor-version":[{"id":12649,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/12647\/revisions\/12649"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/media\/12670"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/media?parent=12647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/categories?post=12647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/tags?post=12647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}