{"id":12721,"date":"2026-04-07T02:49:38","date_gmt":"2026-04-07T02:49:38","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12721"},"modified":"2026-04-07T02:49:38","modified_gmt":"2026-04-07T02:49:38","slug":"abrasive-blasting-media-for-paint-coating-removal","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/ja\/resource\/blog\/abrasive-blasting-media-for-paint-coating-removal\/","title":{"rendered":"Abrasive Blasting Media for Paint &amp; Coating Removal"},"content":{"rendered":"<!-- ============================================================\n     JIANGSU HENGLIHONG TECHNOLOGY CO., LTD.\n     Article C-2: Abrasive Blasting Media for Paint & Coating Removal\n     Target URL: https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-for-paint-coating-removal\/\n     Last updated: April 2026\n     ============================================================ -->\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@graph\": [\n        {\n            \"@type\": \"Article\",\n            \"headline\": \"Abrasive Blasting Media for Paint & Coating Removal\",\n            \"description\": \"Expert guide to selecting abrasive blasting media for paint and coating removal \\u2014 matching media to coating chemistry (epoxy, polyurethane, zinc-rich, automotive paint) and substrate, with grit size and pressure recommendations. By Jiangsu Henglihong Technology Co., Ltd.\",\n            \"author\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"publisher\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"datePublished\": \"2026-04-01\",\n            \"dateModified\": \"2026-04-01\",\n            \"mainEntityOfPage\": {\n                \"@type\": \"WebPage\",\n                \"@id\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/abrasive-blasting-media-for-paint-coating-removal\\\/\"\n            }\n        },\n        {\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 1,\n                    \"name\": \"Home\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 2,\n                    \"name\": \"Resources\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 3,\n                    \"name\": \"Blog\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/\"\n                },\n                {\n                    \"@type\": \"ListItem\",\n                    \"position\": 4,\n                    \"name\": \"Abrasive Blasting Media for Paint & Coating Removal\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/abrasive-blasting-media-for-paint-coating-removal\\\/\"\n                }\n            ]\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What is the best blasting media for removing paint from steel?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Steel grit (GL grade, G-40 to G-50) is the most cost-effective media for removing paint from structural steel in high-volume operations with reclaim systems. Aluminum oxide (F46\\u2013F80) is preferred for precision work and non-ferrous substrates. Garnet (30\\\/60 to 36\\\/60 mesh) is the choice for open-site or marine paint removal. For sensitive substrates like aluminum aircraft skins or CFRP composites, melamine plastic grit at low pressure is the only appropriate choice.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Can abrasive blasting remove epoxy coating?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Yes. Epoxy coatings are effectively removed by angular abrasive blasting media. High-build epoxy (DFT 300\\u2013500 \\u00b5m) requires a coarser grit and more passes than thin-film epoxy primers. Steel grit GL grade G-40 or aluminum oxide F36\\u2013F46 at 80\\u2013100 PSI provides efficient epoxy removal from steel while simultaneously re-profiling the substrate for the new coating system.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"How do I remove paint from aluminum without damaging the substrate?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"For aluminum substrates, use iron-free media at reduced pressure. Glass beads (US 80\\u2013120 mesh) are suitable for light paint removal and surface conditioning. Melamine plastic grit at 30\\u201350 PSI is the standard for automotive and aerospace aluminum paint stripping without substrate damage. White aluminum oxide (F60\\u2013F100) at moderate pressure can profile aluminum for repainting. Never use steel shot or grit \\u2014 embedded iron particles cause galvanic corrosion and destroy any anodize or conversion coating.\"\n                    }\n                }\n            ]\n        }\n    ]\n}<\/script>\n\n<style>\n.hlh-c2*,.hlh-c2*::before,.hlh-c2*::after{box-sizing:border-box;margin:0;padding:0}\n.hlh-c2{font-family:'Segoe UI',Arial,sans-serif;font-size:16px;line-height:1.8;color:#1a1a2e;max-width:960px;margin:0 auto;padding:0 16px 60px}\n.hlh-c2 .hlh-hero{background:linear-gradient(135deg,#1A5276 0%,#0d2d47 100%);border-radius:12px;padding:52px 44px;margin-bottom:48px;position:relative;overflow:hidden}\n.hlh-c2 .hlh-hero::before{content:'';position:absolute;top:-60px;right:-60px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,0.04)}\n.hlh-c2 .hlh-hero-label{display:inline-block;background:rgba(255,255,255,0.12);color:#AED6F1;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:4px 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p{color:#AED6F1;font-size:15px;margin:0 0 22px}\n.hlh-c2 .hlh-cta a{display:inline-block;background:#fff;color:#1A5276;font-size:14px;font-weight:700;padding:12px 30px;border-radius:6px;text-decoration:none}\n.hlh-c2 .hlh-cta a:hover{background:#AED6F1}\n.hlh-c2 .hlh-faq{margin:26px 0}\n.hlh-c2 .hlh-faq-item{border:1px solid #D5E8F3;border-radius:8px;margin-bottom:10px;overflow:hidden}\n.hlh-c2 .hlh-faq-q{width:100%;background:#F4F8FB;border:none;cursor:pointer;text-align:left;padding:15px 18px;font-size:15px;font-weight:600;color:#0d2d47;display:flex;justify-content:space-between;align-items:center;gap:12px}\n.hlh-c2 .hlh-faq-q:hover{background:#EBF5FB}\n.hlh-c2 .hlh-faq-arrow{flex-shrink:0;width:20px;height:20px;background:#1A5276;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:11px;transition:transform .3s}\n.hlh-c2 .hlh-faq-item.open .hlh-faq-arrow{transform:rotate(180deg)}\n.hlh-c2 .hlh-faq-a{display:none;padding:15px 18px;font-size:14px;color:#2c3e50;line-height:1.7;border-top:1px solid #D5E8F3;background:#fff}\n.hlh-c2 .hlh-faq-item.open .hlh-faq-a{display:block}\n.hlh-c2 a.hlh-link{color:#1A5276;font-weight:600;text-decoration:underline;text-underline-offset:3px}\n.hlh-c2 a.hlh-link:hover{color:#2980B9}\n.hlh-c2 hr{border:none;border-top:1px solid #EAF0F6;margin:44px 0}\n.hlh-c2 ul,.hlh-c2 ol{padding-left:22px;margin-bottom:18px}\n.hlh-c2 li{margin-bottom:7px;color:#2c3e50;font-size:15px}\n.hlh-c2 strong{color:#0d2d47}\n@media(max-width:640px){.hlh-c2 .hlh-hero{padding:34px 22px}.hlh-c2 .hlh-cta{padding:30px 22px}}\n<\/style>\n\n<div class=\"hlh-c2\">\n\n  <div class=\"hlh-hero\">\n    <div class=\"hlh-hero-label\">Application Guide<\/div>\n    <h1>Abrasive Blasting Media for Paint &amp; Coating Removal<\/h1>\n    <p>A comprehensive application guide to selecting abrasive blasting media for paint and coating removal \u2014 matching media type to coating chemistry, substrate material, and downstream process requirements across industrial, marine, automotive, and aerospace applications.<\/p>\n    <div class=\"hlh-hero-meta\">\n      <span>Published April 2026<\/span>\n      <span>By Jiangsu Henglihong Technology Co., Ltd.<\/span>\n      <span>~2,100 words \u00b7 10 min read<\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"hlh-toc\">\n    <div class=\"hlh-toc-title\">Table of Contents<\/div>\n    <ol>\n      <li><a href=\"#coating-removal-overview\">Paint &amp; Coating Removal by Blasting: The Principles<\/a><\/li>\n      <li><a href=\"#media-by-coating\">Media Selection by Coating Type<\/a><\/li>\n      <li><a href=\"#media-by-substrate\">Media Selection by Substrate<\/a><\/li>\n      <li><a href=\"#industrial-coatings\">Industrial Protective Coatings (Epoxy, Polyurethane, Zinc)<\/a><\/li>\n      <li><a href=\"#automotive-paint\">Automotive Paint Removal<\/a><\/li>\n      <li><a href=\"#aerospace\">Aerospace Coating Removal<\/a><\/li>\n      <li><a href=\"#lead-paint\">Lead Paint Removal Considerations<\/a><\/li>\n      <li><a href=\"#partial-stripping\">Selective &amp; Partial Coating Removal<\/a><\/li>\n      <li><a href=\"#faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li>\n    <\/ol>\n  <\/div>\n\n  <h2 id=\"coating-removal-overview\">Paint &amp; Coating Removal by Blasting: The Principles<\/h2>\n  <p class=\"hlh-lead\">Abrasive blasting removes paint and protective coatings through the same kinetic impact mechanism used for rust removal \u2014 but the specific media requirements differ based on the coating chemistry, substrate sensitivity, and what must happen to the surface after stripping. Whether the goal is re-coating to the original specification, downgrading to a simpler system, or returning a precision component to dimensional specification, the media choice determines both the efficiency of removal and the integrity of the substrate beneath.<\/p>\n  <p>Unlike rust removal, which always targets complete contamination elimination to a defined cleanliness grade, paint removal blasting has three distinct outcome modes: <strong>full stripping to bare metal<\/strong> (most common \u2014 remove all coating layers down to bare substrate), <strong>selective layer removal<\/strong> (remove topcoat while preserving primer), and <strong>substrate-protective removal<\/strong> (remove coating without altering substrate profile, dimensions, or surface treatment \u2014 required for aerospace composites and precision components).<\/p>\n  <p>The choice of media, grit size, and process parameters must be matched to the outcome mode \u2014 and this varies dramatically between a structural steel topcoat recoat and an aerospace composite MRO operation. For the complete 7-factor selection framework: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-choose-abrasive-blasting-media-7-key-factors-explained\/\" target=\"_blank\" rel=\"noopener\">How to Choose Abrasive Blasting Media: 7 Key Factors Explained<\/a>.<\/p>\n\n  <h2 id=\"media-by-coating\">Media Selection by Coating Type<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table>\n      <thead>\n        <tr><th>Coating Type<\/th><th>Typical DFT<\/th><th>Hardness \/ Adhesion<\/th><th>Recommended Media<\/th><th>Grit Size<\/th><th>Pressure (PSI)<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td><strong>Epoxy primer (thin film)<\/strong><\/td><td>50\u2013125 \u00b5m<\/td><td>High adhesion<\/td><td>Steel Grit GL or Al\u2082O\u2083<\/td><td>G-40\u2013G-50 \/ F46\u2013F60<\/td><td>70\u2013100<\/td><\/tr>\n        <tr><td><strong>High-build epoxy<\/strong><\/td><td>300\u2013600 \u00b5m<\/td><td>Very high, tough<\/td><td>Steel Grit GH or Coarse Al\u2082O\u2083<\/td><td>G-25\u2013G-40 \/ F36\u2013F46<\/td><td>80\u2013110<\/td><\/tr>\n        <tr><td><strong>Zinc-rich primer<\/strong><\/td><td>60\u2013100 \u00b5m<\/td><td>Hard, inorganic binder<\/td><td>Steel Grit GL or Al\u2082O\u2083<\/td><td>G-40 \/ F46\u2013F60<\/td><td>80\u2013100<\/td><\/tr>\n        <tr><td><strong>Polyurethane topcoat<\/strong><\/td><td>75\u2013200 \u00b5m<\/td><td>Flexible, UV-resistant<\/td><td>Steel Grit GL or Garnet<\/td><td>G-50 \/ 30\/60 mesh<\/td><td>70\u201390<\/td><\/tr>\n        <tr><td><strong>Coal tar epoxy<\/strong><\/td><td>200\u2013400 \u00b5m<\/td><td>Very tough, brittle when cold<\/td><td>Steel Grit GH<\/td><td>G-25\u2013G-40<\/td><td>90\u2013110<\/td><\/tr>\n        <tr><td><strong>Alkyd paint (old)<\/strong><\/td><td>50\u2013150 \u00b5m<\/td><td>Moderate \u2014 softens with age<\/td><td>Garnet or Al\u2082O\u2083<\/td><td>30\/60 \/ F60\u2013F80<\/td><td>60\u201380<\/td><\/tr>\n        <tr><td><strong>Automotive OEM paint (steel)<\/strong><\/td><td>100\u2013200 \u00b5m total<\/td><td>Multi-layer, flexible<\/td><td>Al\u2082O\u2083 or Steel Grit GL<\/td><td>F60\u2013F80 \/ G-50<\/td><td>60\u201380<\/td><\/tr>\n        <tr><td><strong>Automotive paint (aluminum)<\/strong><\/td><td>100\u2013200 \u00b5m total<\/td><td>Multi-layer, flexible<\/td><td>Melamine Plastic Grit<\/td><td>Medium grade<\/td><td>30\u201350<\/td><\/tr>\n        <tr><td><strong>Powder coating<\/strong><\/td><td>60\u2013200 \u00b5m<\/td><td>Hard, cross-linked<\/td><td>Al\u2082O\u2083 or Steel Grit<\/td><td>F46\u2013F60 \/ G-40\u2013G-50<\/td><td>70\u2013100<\/td><\/tr>\n        <tr><td><strong>Aircraft aerospace paint (CFRP)<\/strong><\/td><td>100\u2013250 \u00b5m<\/td><td>Multi-layer<\/td><td>Melamine Plastic Grit<\/td><td>Medium\u2013Fine<\/td><td>30\u201350<\/td><\/tr>\n        <tr><td><strong>FBE pipeline coating<\/strong><\/td><td>350\u2013500 \u00b5m<\/td><td>Very hard, brittle<\/td><td>Steel Grit GH or Coarse Al\u2082O\u2083<\/td><td>G-25 \/ F24\u2013F36<\/td><td>90\u2013110<\/td><\/tr>\n        <tr><td><strong>Antifouling marine paint<\/strong><\/td><td>200\u2013400 \u00b5m total<\/td><td>Soft, self-polishing<\/td><td>Garnet or Steel Grit GL<\/td><td>30\/60 \/ G-50<\/td><td>60\u201380<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2 id=\"media-by-substrate\">Media Selection by Substrate<\/h2>\n  <div class=\"hlh-table-wrap\">\n    <table>\n      <thead>\n        <tr><th>Substrate<\/th><th>Key Constraint<\/th><th>Recommended Media<\/th><th>Media to Avoid<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>Carbon steel (structural)<\/td><td>Profile for re-coating; iron contamination not an issue<\/td><td>Steel Grit, Al\u2082O\u2083, Garnet<\/td><td>\u73ea\u7802<\/td><\/tr>\n        <tr><td>\u30b9\u30c6\u30f3\u30ec\u30b9<\/td><td>Zero iron contamination; preserve passivation<\/td><td>White Al\u2082O\u2083, Glass Bead<\/td><td>Steel grit\/shot, Brown Al\u2082O\u2083<\/td><\/tr>\n        <tr><td>Aluminum alloy (thick section)<\/td><td>No iron contamination; can accept light profiling<\/td><td>White Al\u2082O\u2083 (F60\u2013F80), Glass Bead<\/td><td>Steel grit\/shot<\/td><\/tr>\n        <tr><td>Aluminum alloy (aircraft skin)<\/td><td>Preserve anodize\/alodine; zero substrate removal<\/td><td>Melamine Plastic Grit (30\u201350 PSI)<\/td><td>All mineral and metallic media<\/td><\/tr>\n        <tr><td>CFRP \/ composite<\/td><td>No fiber damage; zero substrate profiling<\/td><td>Melamine Plastic Grit (low pressure)<\/td><td>All hard media<\/td><\/tr>\n        <tr><td>Fiberglass (GRP)<\/td><td>No fiber exposure; preserve gel coat where possible<\/td><td>Plastic Grit or Fine Garnet<\/td><td>Steel media; coarse mineral<\/td><\/tr>\n        <tr><td>Galvanized steel<\/td><td>May need to remove zinc coating \u2014 confirm scope<\/td><td>Al\u2082O\u2083 F46\u2013F60 or Garnet<\/td><td>Coarse steel grit (removes zinc too fast)<\/td><\/tr>\n        <tr><td>Titanium \/ nickel superalloy<\/td><td>Zero iron contamination; tight profile control<\/td><td>White Al\u2082O\u2083 or Glass Bead<\/td><td>Steel media; Brown Al\u2082O\u2083<\/td><\/tr>\n        <tr><td>Cast iron<\/td><td>Porous surface \u2014 remove coatings completely<\/td><td>Steel Grit GH or Coarse Al\u2082O\u2083<\/td><td>Soft media<\/td><\/tr>\n        <tr><td>Wood<\/td><td>Preserve grain; remove only surface coating<\/td><td>Walnut Shell or Corn Cob<\/td><td>All mineral and metallic media<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2 id=\"industrial-coatings\">Industrial Protective Coatings: Epoxy, Polyurethane, and Zinc<\/h2>\n  <p>The removal of industrial protective coating systems from structural steel \u2014 for maintenance repainting, asset life extension, or specification change \u2014 is one of the highest-volume paint removal applications in the world. The process is straightforward in principle: use angular media aggressive enough to cut through the coating stack in a reasonable number of passes, while simultaneously re-profiling the substrate to the specification required by the new coating system.<\/p>\n  <p>For maintenance repainting where the new coating system requires the same profile as the original (typically Sa 2.5, 40\u201375 \u00b5m Rz), steel grit GL G-40 to G-50 performs the stripping and re-profiling in a single step with minimal media changes between the two operations. This makes steel grit the most economically efficient choice for industrial coating removal at scale \u2014 simultaneous stripping and surface preparation without a process step change. For full steel grit technical data: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/steel-shot-steel-grit-blasting-media-angular-vs-round-for-surface-prep\/\" target=\"_blank\" rel=\"noopener\">Steel Shot &amp; Steel Grit Blasting Media<\/a>.<\/p>\n  <p>High-build coal tar epoxy and thick-film pipeline coatings (FBE) require more aggressive media \u2014 GH grade grit or coarse aluminum oxide F24\u2013F36 \u2014 to cut through the coating thickness efficiently. Cold temperatures make some coating types brittle (particularly coal tar epoxy below 10\u00b0C), which can actually aid removal by causing the coating to fracture more readily under blast impact.<\/p>\n\n  <h2 id=\"automotive-paint\">Automotive Paint Removal<\/h2>\n  <p>Automotive paint removal blasting is dominated by two very different substrate scenarios that require opposite approaches: <strong>steel body panels<\/strong> (conventional thick-section steel, tolerates angular media) and <strong>aluminum body panels and CFRP components<\/strong> (thin-section, dimensionally critical, cannot tolerate any hard abrasive at normal blasting pressures).<\/p>\n\n  <h3>Steel Body Panels<\/h3>\n  <p>Steel automotive body panels can be blast-stripped with aluminum oxide F60\u2013F80 or garnet 36\/60 mesh at moderate pressure (60\u201380 PSI). The key challenge is that automotive sheet steel is thin (typically 0.6\u20131.2 mm) and prone to thermal warping if blast pressure or dwell time is excessive. Use consistent medium-pressure blasting with wide-coverage nozzles and keep the nozzle moving to prevent localized stress concentration. After stripping, the surface can be directly re-primed at the resulting profile (typically 20\u201340 \u00b5m Ra) without further preparation.<\/p>\n\n  <h3>Aluminum Body Panels<\/h3>\n  <p>Modern aluminum-intensive vehicles \u2014 and classic aluminum-bodied vehicles \u2014 require melamine plastic grit at 30\u201350 PSI for paint removal. The plastic grit removes the paint system without touching the aluminum substrate, preserving any conversion coating (chromate or alternative) that remains on the aluminum surface. This eliminates the need to re-treat the aluminum surface before repainting, saving both time and material cost. For comprehensive coverage of automotive and aerospace blasting: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/blasting-media-for-automotive-aerospace-applications\/\" target=\"_blank\" rel=\"noopener\">Blasting Media for Automotive &amp; Aerospace Applications<\/a>.<\/p>\n\n  <h2 id=\"aerospace\">Aerospace Coating Removal<\/h2>\n  <p>Aerospace coating removal is among the most technically demanding paint stripping applications, governed by strict material specifications (AMS, MIL-SPEC, OEM process documents) that define acceptable media types, pressure ranges, nozzle standoff distances, and coverage requirements. The primary objectives are removing all coating layers efficiently while:<\/p>\n  <ul>\n    <li>Preserving the structural integrity of the aluminum alloy or CFRP substrate<\/li>\n    <li>Not removing measurable material from the substrate<\/li>\n    <li>Not damaging or removing the anodized or alodined surface treatment beneath the paint system<\/li>\n    <li>Not embedding abrasive particles in the substrate surface<\/li>\n    <li>Not altering the aerodynamic profile of airfoil surfaces<\/li>\n  <\/ul>\n  <p>Melamine plastic grit (AMS 2441) is the standard media for all of these requirements. It is used at 30\u201350 PSI with controlled standoff distance (typically 15\u201325 cm) and impingement angle (typically 45\u201360\u00b0). For the most sensitive composite or thin aluminum structures, urea plastic grit at even lower pressure (20\u201335 PSI) may be specified.<\/p>\n\n  <h2 id=\"lead-paint\">Lead Paint Removal: Critical Safety Considerations<\/h2>\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Lead Paint Blasting: Elevated Safety &amp; Waste Disposal Requirements<\/div>\n    <p>Blasting to remove lead-based paint (common on pre-1980 industrial structures, bridges, ships, and buildings) requires specific engineering controls beyond standard blasting safety requirements. Lead dust is highly toxic \u2014 ingestion or inhalation of lead particles causes serious, irreversible neurological damage. Key requirements include: full containment to prevent lead dust escape to the environment; HEPA-filter dust collection; supplied-air respirators (not half-face respirators with particulate filters alone); lead blood testing for workers; and disposal of all spent media and blast debris as hazardous waste under EPA RCRA regulations (US) or equivalent national legislation. Always engage a certified lead abatement contractor for significant lead paint removal projects.<\/p>\n  <\/div>\n  <p>The choice of blasting media for lead paint removal does not change the fundamental safety requirements \u2014 it affects only the efficiency of paint removal and the volume of waste generated. Lower-dust media (garnet, steel grit) reduce airborne lead levels during blasting compared to high-dust alternatives, but do not eliminate the need for full containment and respiratory protection.<\/p>\n\n  <h2 id=\"partial-stripping\">Selective &amp; Partial Coating Removal<\/h2>\n  <p>Not all paint removal blasting targets complete stripping to bare metal. Two selective removal scenarios arise frequently in industrial maintenance:<\/p>\n  <p><strong>Topcoat removal preserving primer:<\/strong> When a topcoat is damaged or delaminated but the underlying primer is intact and well-adhered, blast stripping the topcoat while leaving the primer saves the cost of full recoating. This requires careful calibration of media size, pressure, and blast duration \u2014 fine garnet (36\/60 to 60\/100 mesh) at reduced pressure (50\u201370 PSI) can selectively remove flexible topcoat materials without cutting through the harder epoxy primer beneath. Trial blasting and cross-cut adhesion testing of the remaining primer is essential before proceeding with this approach on any significant area.<\/p>\n  <p><strong>Spot blasting for coating repair:<\/strong> Localized corrosion breakthrough or mechanical damage requires spot blast cleaning of the affected area and a defined margin around it before applying repair coatings. Portable pneumatic blasting with aluminum oxide or garnet provides the control needed for this application. The blast margin around the damage should feather into the adjacent intact coating to ensure the repair coating bonds to both the bare metal and the existing coating without creating a sharp edge that could trap moisture.<\/p>\n\n  <div class=\"hlh-cta\">\n    <h3>Source Paint Removal Blasting Media from Jiangsu Henglihong Technology<\/h3>\n    <p>We supply the full range of media for paint and coating removal applications: aluminum oxide (F16\u2013F220), silicon carbide, glass beads, and steel shot\/grit in all grades and sizes. All products carry chemical analysis certificates and compliance documentation for export to global markets.<\/p>\n    <a href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Quote or Sample<\/a>\n  <\/div>\n\n  <hr>\n\n  <h2 id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n  <div class=\"hlh-faq\">\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC2Toggle(this)\">What is the best blasting media for removing paint from steel?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Steel grit GL grade (G-40 to G-50) is most cost-effective for high-volume structural steel paint removal with reclaim systems. Aluminum oxide (F46\u2013F80) is preferred for precision work. Garnet (30\/60 to 36\/60) is the choice for open-site or marine applications. For aluminum or CFRP substrates, melamine plastic grit at 30\u201350 PSI is required \u2014 no mineral or metallic media is safe on these sensitive substrates.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC2Toggle(this)\">Can abrasive blasting remove epoxy coating?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Yes. Epoxy coatings are effectively removed by angular abrasive blasting. High-build epoxy (300\u2013600 \u00b5m DFT) requires coarser grit and more passes than thin-film primers. Steel grit GL G-40 or aluminum oxide F36\u2013F46 at 80\u2013100 PSI provides efficient epoxy removal from carbon steel while re-profiling the substrate simultaneously.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhC2Toggle(this)\">How do I remove paint from aluminum without damaging the substrate?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Use melamine plastic grit at 30\u201350 PSI \u2014 the standard media for aerospace and automotive aluminum paint stripping. It removes paint without touching the substrate or disturbing conversion coatings. Glass beads (US 80\u2013120) work for light surface cleaning. White aluminum oxide at moderate pressure can be used for profiling aluminum before repainting. Never use steel grit or shot \u2014 embedded iron causes galvanic corrosion.<\/div>\n    <\/div>\n  <\/div>\n\n  <hr>\n\n  <div class=\"hlh-related\">\n    <div class=\"hlh-related-title\">Related Guides in This Series<\/div>\n    <div class=\"hlh-related-grid\">\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-complete-guide-to-types-properties-selection\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Complete Guide<\/div>\n        <div class=\"rc-title\">Abrasive Blasting Media: Complete Guide to Types, Properties &amp; Selection<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-for-rust-removal-best-types-techniques\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Application Guide<\/div>\n        <div class=\"rc-title\">Abrasive Blasting Media for Rust Removal: Best Types &amp; Techniques<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/blasting-media-for-automotive-aerospace-applications\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Application Guide<\/div>\n        <div class=\"rc-title\">Blasting Media for Automotive &amp; Aerospace Applications<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-organic-blasting-media-walnut-shell-corn-cob-plastic-grit\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Media Types<\/div>\n        <div class=\"rc-title\">Plastic &amp; Organic Blasting Media: Walnut Shell, Corn Cob &amp; Plastic Grit<\/div>\n      <\/a>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n<script>\n(function(){\n  function hlhC2Toggle(btn){\n    var item=btn.closest('.hlh-faq-item');\n    var isOpen=item.classList.contains('open');\n    document.querySelectorAll('.hlh-c2 .hlh-faq-item').forEach(function(el){el.classList.remove('open');});\n    if(!isOpen){item.classList.add('open');}\n  }\n  window.hlhC2Toggle=hlhC2Toggle;\n})();\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Application Guide Abrasive Blasting Media for Paint &amp; Coating Removal  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12773,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-12721","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/comments?post=12721"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12721\/revisions"}],"predecessor-version":[{"id":12723,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12721\/revisions\/12723"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/media\/12773"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/media?parent=12721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/categories?post=12721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/tags?post=12721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}