{"id":12706,"date":"2026-04-07T02:49:11","date_gmt":"2026-04-07T02:49:11","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12706"},"modified":"2026-04-07T02:49:11","modified_gmt":"2026-04-07T02:49:11","slug":"how-to-choose-abrasive-blasting-media-7-key-factors-explained","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/es\/resource\/blog\/how-to-choose-abrasive-blasting-media-7-key-factors-explained\/","title":{"rendered":"How to Choose Abrasive Blasting Media: 7 Key Factors Explained"},"content":{"rendered":"<!-- ============================================================\n     JIANGSU HENGLIHONG TECHNOLOGY CO., LTD.\n     Article B-2: How to Choose Abrasive Blasting Media\n     Target URL: https:\/\/hlh-js.com\/resource\/blog\/how-to-choose-abrasive-blasting-media-7-key-factors-explained\/\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\": \"How to Choose Abrasive Blasting Media: 7 Key Factors Explained\",\n            \"description\": \"A structured, practical framework for selecting the right abrasive blasting media \\u2014 covering substrate material, required surface finish, hardness compatibility, particle shape, grit size, recyclability, and safety regulations. 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\\\/how-to-choose-abrasive-blasting-media-7-key-factors-explained\\\/\"\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\": \"How to Choose Abrasive Blasting Media: 7 Key Factors Explained\",\n                    \"item\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/how-to-choose-abrasive-blasting-media-7-key-factors-explained\\\/\"\n                }\n            ]\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What factors determine the right abrasive blasting media?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Seven key factors determine the right blasting media: (1) substrate material and sensitivity, (2) required surface finish or anchor profile depth, (3) hardness compatibility between media and substrate, (4) particle shape \\u2014 angular for profiling, round for peening, (5) grit size for the target profile and throughput, (6) recyclability and total cost of use, and (7) safety, regulatory, and environmental requirements. Each factor must be evaluated in the context of the specific application.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"How do I know if a blasting media is too aggressive for my substrate?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"A blasting media is too aggressive if it: (1) removes measurable material from the substrate beyond the intended surface contamination, (2) creates surface cracks, delamination, or dimensional changes in the substrate, (3) embeds abrasive particles in soft substrates, or (4) produces a surface profile that exceeds the coating system specification. When in doubt, start with the softest media that could plausibly work, and increase aggressiveness only if the required surface condition is not achieved.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Should I use angular or round blasting media?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Use angular media (aluminum oxide, steel grit, garnet, silicon carbide) when the goal is surface profiling for coating adhesion, aggressive cleaning of contamination, or material removal. Use round media (steel shot, glass beads) when the goal is shot peening for fatigue life improvement, decorative finishing, or cleaning without altering the surface profile. 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class=\"hlh-b2\">\n\n  <div class=\"hlh-hero\">\n    <div class=\"hlh-hero-label\">Selection Guide<\/div>\n    <h1>How to Choose Abrasive Blasting Media: 7 Key Factors Explained<\/h1>\n    <p>A structured, practical framework for selecting the right abrasive blasting media \u2014 from defining your substrate and surface requirement through to safety compliance and total cost of use.<\/p>\n    <div class=\"hlh-hero-meta\">\n      <span>Published April 2026<\/span>\n      <span>By Jiangsu Henglihong Technology Co., Ltd.<\/span>\n      <span>~2,600 words \u00b7 12 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=\"#framework\">The 7-Factor Selection Framework<\/a><\/li>\n      <li><a href=\"#factor1\">Factor 1: Substrate Material &amp; Sensitivity<\/a><\/li>\n      <li><a href=\"#factor2\">Factor 2: Required Surface Finish or Profile<\/a><\/li>\n      <li><a href=\"#factor3\">Factor 3: Hardness Compatibility<\/a><\/li>\n      <li><a href=\"#factor4\">Factor 4: Particle Shape \u2014 Angular or Round?<\/a><\/li>\n      <li><a href=\"#factor5\">Factor 5: Grit Size<\/a><\/li>\n      <li><a href=\"#factor6\">Factor 6: Recyclability &amp; Total Cost<\/a><\/li>\n      <li><a href=\"#factor7\">Factor 7: Safety, Regulations &amp; Environment<\/a><\/li>\n      <li><a href=\"#substrate-guide\">Quick-Reference Substrate Guide<\/a><\/li>\n      <li><a href=\"#mistakes\">Common Selection Mistakes<\/a><\/li>\n      <li><a href=\"#faq\">Preguntas frecuentes<\/a><\/li>\n    <\/ol>\n  <\/div>\n\n  <h2 id=\"framework\">The 7-Factor Selection Framework<\/h2>\n  <p class=\"hlh-lead\">Abrasive blasting media selection is not a single-variable decision. Seven interdependent factors must be evaluated together \u2014 and a mistake in any one of them can result in damaged substrates, failed coating adhesion, regulatory violations, or dramatically inflated operating costs.<\/p>\n  <p>The framework below presents these seven factors in priority order. Work through them sequentially: each factor narrows the field of viable media options, and by Factor 7 you should have a clear, defensible specification. For a side-by-side reference of all major media types across all dimensions, see the <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-comparison-chart-hardness-profile-cost\/\" target=\"_blank\" rel=\"noopener\">Abrasive Blasting Media Comparison Chart<\/a>.<\/p>\n\n  <h2 id=\"factor1\">Factor 1: Substrate Material &amp; Sensitivity<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">1<\/div>\n    <div class=\"factor-title\">Define your substrate \u2014 it sets the outer boundaries of acceptable media.<\/div>\n    <div class=\"factor-body\">\n      <p>The substrate material is the single most important constraint on media selection. It determines three critical parameters simultaneously: the maximum acceptable media hardness (to avoid substrate damage), whether iron contamination is permissible, and whether dimensional integrity must be preserved.<\/p>\n      <p>Key questions to answer before selecting media:<\/p>\n      <ul>\n        <li>What material is the substrate made of \u2014 carbon steel, stainless steel, aluminum alloy, titanium, CFRP, glass, ceramic, wood, or plastic?<\/li>\n        <li>What is the substrate&#8217;s hardness \u2014 is it harder or softer than the contamination being removed?<\/li>\n        <li>Are there dimensional tolerances that blasting must not violate \u2014 precision-machined surfaces, thin walls, critical fit surfaces?<\/li>\n        <li>Is iron contamination acceptable \u2014 or will ferrous particles in the surface cause problems for the downstream process (corrosion, adhesion failure, galvanic coupling)?<\/li>\n        <li>Is the substrate sensitive to compressive stress, deformation, or thermal effects from blasting?<\/li>\n      <\/ul>\n      <div class=\"factor-tip\"><strong>Rule of thumb:<\/strong> The blasting media should be harder than the contamination to be removed, but should not be dramatically harder than the substrate itself \u2014 particularly for thin-walled, precision, or delicate parts. When in doubt, err toward gentler media and test before committing to a production specification.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor2\">Factor 2: Required Surface Finish or Profile<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">2<\/div>\n    <div class=\"factor-title\">Define the required surface outcome \u2014 profile, cleanliness, or finish.<\/div>\n    <div class=\"factor-body\">\n      <p>The required surface condition after blasting determines whether you need angular profiling media, spherical peening media, or soft cleaning media. This is a fundamentally different question from which specific media type \u2014 and must be answered first.<\/p>\n      <p>Three distinct surface outcomes drive different media families:<\/p>\n      <ul>\n        <li><strong>Anchor profile for coating adhesion:<\/strong> Requires angular media (steel grit, aluminum oxide, garnet, silicon carbide) in a grit size calibrated to the specified profile depth (Ra or Rz in \u00b5m). The coating system TDS (technical data sheet) defines the minimum required profile. Most industrial epoxy coatings require 40\u201375 \u00b5m Rz at Sa 2.5 cleanliness.<\/li>\n        <li><strong>Peened surface for fatigue life:<\/strong> Requires spherical media (steel shot or glass beads) at a controlled intensity (Almen intensity per SAE AMS 2430). The peening specification defines bead size, velocity, and coverage \u2014 not just media type.<\/li>\n        <li><strong>Cleaning without surface alteration:<\/strong> Requires soft media (plastic grit, walnut shell, corn cob, soda) at low pressure. The goal is contamination removal with zero substrate profile change \u2014 used for precision components, sensitive substrates, and food-contact surfaces.<\/li>\n      <\/ul>\n      <div class=\"factor-tip\"><strong>Never skip this step:<\/strong> Using a profiling media when only cleaning is needed will create an unwanted anchor profile that may be impossible to reverse. Using a soft cleaning media when a profile is required will leave the coating without adequate mechanical adhesion. The consequence of getting this wrong is coating failure in service.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor3\">Factor 3: Hardness Compatibility<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">3<\/div>\n    <div class=\"factor-title\">Match media hardness to the task \u2014 harder is not always better.<\/div>\n    <div class=\"factor-body\">\n      <p>Once the substrate and required surface condition are defined, hardness selection becomes a question of efficiency and safety. The hardness hierarchy for the most common industrial abrasives is: silicon carbide (9\u20139.5 Mohs) &gt; aluminum oxide (9) &gt; steel grit\/garnet (7\u20138) &gt; glass bead (5.5\u20136) &gt; plastic\/organic (2.5\u20134).<\/p>\n      <p>For most carbon steel blasting applications, the Mohs 7\u20138 range (steel grit, garnet) is entirely adequate. Stepping up to aluminum oxide is justified when: the substrate is harder than Mohs 7\u20138 (tool steels, ceramics), a deeper anchor profile is required than garnet or steel grit achieves at a given pressure, or a tighter grit size distribution is needed than natural minerals provide. Silicon carbide is reserved for the extreme end \u2014 ceramics, tungsten carbide, hardened dies \u2014 where nothing softer achieves acceptable processing rates.<\/p>\n      <ul>\n        <li>Carbon steel (standard grade): Steel grit GL\/GH or aluminum oxide F36\u2013F60 \u2014 both adequate<\/li>\n        <li>Stainless steel: White aluminum oxide or glass bead \u2014 no iron contamination<\/li>\n        <li>Aluminum alloy: Glass bead, white aluminum oxide, or plastic grit \u2014 avoid steel media<\/li>\n        <li>Technical ceramics \/ carbides: Silicon carbide \u2014 the only effective option<\/li>\n        <li>CFRP \/ composites: Plastic grit at low pressure \u2014 protect fiber reinforcement<\/li>\n        <li>Hardened tool steel (HRC 58+): Silicon carbide or aluminum oxide<\/li>\n      <\/ul>\n      <div class=\"factor-tip\"><strong>Over-specifying hardness wastes money:<\/strong> Using silicon carbide where aluminum oxide would suffice increases media cost per cycle by 3\u20135\u00d7 without improving the surface outcome. Use the softest media that reliably achieves the required surface condition.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor4\">Factor 4: Particle Shape \u2014 Angular or Round?<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">4<\/div>\n    <div class=\"factor-title\">Angular cuts and profiles; spherical peens and polishes \u2014 the choice is binary.<\/div>\n    <div class=\"factor-body\">\n      <p>Particle shape is the primary driver of whether blasting creates a rough anchor profile or a smooth peened surface. This is not a matter of degree \u2014 it is a fundamental difference in mechanism, and the wrong shape cannot be compensated for by adjusting pressure, distance, or grit size.<\/p>\n      <p><strong>Angular media<\/strong> (steel grit, aluminum oxide, silicon carbide, garnet, crushed glass, plastic grit) cuts into the surface on impact, creating sharp peaks and valleys \u2014 the &#8220;anchor profile&#8221; that coating systems require for mechanical adhesion. Each impact removes a small amount of material and leaves behind a sharply defined micro-texture.<\/p>\n      <p><strong>Spherical media<\/strong> (steel shot, glass beads) impacts the surface and bounces, compressing the surface layer without cutting into it. Each impact creates a shallow rounded dimple. The cumulative effect is a smooth, uniformly compressive surface with improved fatigue resistance but no meaningful coating anchor profile.<\/p>\n      <div class=\"factor-tip\"><strong>Blending is an option:<\/strong> Many structural steel blasting operations run mixed shot\/grit blends \u2014 typically 30\u201370% grit \u2014 to simultaneously profile the surface (from the grit component) and limit peak roughness (from the shot component). This produces a surface with both adequate profile depth and smoother peak distribution than pure grit blasting. For details: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/angular-vs-round-blasting-media-surface-profile-finish-differences\/\" target=\"_blank\" rel=\"noopener\">Angular vs Round Blasting Media: Surface Profile &amp; Finish Differences<\/a>.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor5\">Factor 5: Grit Size<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">5<\/div>\n    <div class=\"factor-title\">Grit size controls profile depth, throughput speed, and finish uniformity.<\/div>\n    <div class=\"factor-body\">\n      <p>Once media type and shape are selected, grit size is the tuning parameter that calibrates surface profile depth and blasting throughput within the selected media type. Coarser grits produce deeper profiles and faster material removal; finer grits produce shallower profiles and more uniform, smoother finishes at lower throughput rates.<\/p>\n      <p>The relationship between grit size and profile is not linear \u2014 going from F60 to F36 (one coarsening step) approximately doubles the profile depth, while going from F60 to F120 (one fining step) approximately halves it. This makes grit size an effective lever for fine-tuning profiles within a given media type.<\/p>\n      <p>Practical grit size selection guidelines for common scenarios:<\/p>\n      <ul>\n        <li>Heavy mill scale and severe rust removal: Coarse (F16\u2013F36 Al\u2082O\u2083; G-18\u2013G-25 steel grit)<\/li>\n        <li>Standard coating prep (Sa 2.5, 40\u201375 \u00b5m Rz): Medium (F36\u2013F80 Al\u2082O\u2083; G-25\u2013G-50 steel grit; 30\/60 garnet)<\/li>\n        <li>Precision deburring and pre-plate conditioning: Fine (F80\u2013F180 Al\u2082O\u2083; US 100\u2013170 glass bead)<\/li>\n        <li>Shot peening (structural peening): S-230 to S-460 steel shot (per Almen intensity spec)<\/li>\n        <li>Shot peening (precision aerospace): US 70\u2013200 glass bead (AMS 2431)<\/li>\n        <li>Ultra-fine surface conditioning: F220+ Al\u2082O\u2083; US 200\u2013400 glass bead<\/li>\n      <\/ul>\n      <div class=\"factor-tip\"><strong>Always confirm with the coating TDS:<\/strong> The coating manufacturer&#8217;s technical data sheet specifies the required profile depth (minimum and maximum). Always verify that your selected media type and grit size combination achieves the specified range before committing to production blasting. For grit size conversion across standards (FEPA, ANSI, MESH, JIS): <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/blasting-media-grit-size-mesh-size-guide-how-to-read-convert\/\" target=\"_blank\" rel=\"noopener\">Blasting Media Grit Size &amp; Mesh Size Guide<\/a>.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor6\">Factor 6: Recyclability &amp; Total Cost of Use<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">6<\/div>\n    <div class=\"factor-title\">Calculate cost per cycle, not cost per kilogram.<\/div>\n    <div class=\"factor-body\">\n      <p>The purchase price per kilogram of blast media is not a meaningful economic metric for media selection. What matters is the <strong>total cost per blasting cycle<\/strong> \u2014 which includes purchase price, reuse cycles, reclaim system cost, media disposal cost, and operator time per kilogram of effective media consumed.<\/p>\n      <p>The formula for cost per effective cycle:<\/p>\n      <p style=\"text-align:center;font-style:italic;color:#1A5276;font-weight:600;margin:16px 0;\">Cost per cycle = (Purchase price per kg) \u00f7 (Number of reuse cycles)<\/p>\n      <p>This formula alone makes clear why steel shot and grit \u2014 at 200\u2013300 cycles \u2014 are economically dominant for high-volume operations despite higher unit purchase prices. At $1.50\/kg \u00f7 250 cycles = $0.006\/cycle, steel grit is 15\u201320\u00d7 cheaper per cycle than single-use garnet slag at $0.12\/kg \u00f7 1 cycle.<\/p>\n      <p>However, cost per cycle is not the only economic variable. Also consider:<\/p>\n      <ul>\n        <li><strong>Capital cost of reclaim system:<\/strong> Steel media requires substantial closed-loop reclaim infrastructure. For operations below a certain throughput threshold, this capital cost does not pay back.<\/li>\n        <li><strong>Media disposal cost:<\/strong> Hazardous waste disposal (required for some spent media depending on substrate contaminants) can exceed media purchase cost.<\/li>\n        <li><strong>Equipment wear rate:<\/strong> Hard angular media (SiC, Al\u2082O\u2083) wears nozzles, valves, and hoses faster than softer alternatives \u2014 a hidden operating cost.<\/li>\n      <\/ul>\n      <div class=\"factor-tip\">For a full cost-per-cycle model with worked examples: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/reusable-vs-single-use-blasting-media-cost-analysis-roi\/\" target=\"_blank\" rel=\"noopener\">Reusable vs Single-Use Blasting Media: Cost Analysis &amp; ROI<\/a>. For reclaim system economics: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-media-recycling-reclaim-systems-reduce-cost-waste\/\" target=\"_blank\" rel=\"noopener\">Abrasive Blasting Media Recycling &amp; Reclaim Systems<\/a>.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"factor7\">Factor 7: Safety, Regulations &amp; Environmental Requirements<\/h2>\n\n  <div class=\"factor-block\">\n    <div class=\"factor-num\">7<\/div>\n    <div class=\"factor-title\">Regulatory compliance is non-negotiable \u2014 it may override all other factors.<\/div>\n    <div class=\"factor-body\">\n      <p>Safety and regulatory requirements can eliminate certain media options from consideration entirely, regardless of their technical or economic merits. In April 2026, the regulatory environment for abrasive blasting media is substantially more stringent than it was a decade ago, with continuing tightening of silica exposure limits, heavy metal leaching standards, and waste disposal classifications.<\/p>\n      <p>Key regulatory considerations by media type:<\/p>\n      <ul>\n        <li><strong>Arena de s\u00edlice:<\/strong> Banned or severely restricted in the EU, UK, Australia, and many other jurisdictions. OSHA PEL for crystalline silica is 50 \u00b5g\/m\u00b3 TWA (2016 standard). Where still legal, engineering controls, respiratory protection, and medical surveillance are mandatory. See: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/silica-sand-in-abrasive-blasting-health-risks-osha-rules-safe-alternatives\/\" target=\"_blank\" rel=\"noopener\">Silica Sand in Abrasive Blasting: Health Risks, OSHA Rules &amp; Safe Alternatives<\/a>.<\/li>\n        <li><strong>Coal and copper slag:<\/strong> May fail TCLP (Toxicity Characteristic Leaching Procedure) tests for heavy metals in some supply sources, requiring disposal as hazardous waste. Always request TCLP data from suppliers.<\/li>\n        <li><strong>All media \u2014 spent waste classification:<\/strong> Spent blasting media may be classified as hazardous based on the substrate&#8217;s coating chemistry (lead paint, chromate primer, cadmium), not the media itself. Test spent media before disposal classification.<\/li>\n        <li><strong>Marine and waterway blasting:<\/strong> Containment, waste water treatment, and media disposal requirements are particularly stringent near water. Garnet&#8217;s non-hazardous classification is a significant advantage in these settings.<\/li>\n      <\/ul>\n      <div class=\"factor-tip\"><strong>Environmental tip:<\/strong> Choosing low-dust, non-hazardous waste media from the outset \u2014 garnet, glass bead, aluminum oxide, steel media \u2014 typically reduces total regulatory compliance cost significantly compared to managing the consequences of using cheaper, higher-risk alternatives. See: <a class=\"hlh-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/eco-friendly-biodegradable-blasting-media-green-alternatives-guide\/\" target=\"_blank\" rel=\"noopener\">Eco-Friendly &amp; Biodegradable Blasting Media: Green Alternatives Guide<\/a>.<\/div>\n    <\/div>\n  <\/div>\n\n  <h2 id=\"substrate-guide\">Quick-Reference Substrate Guide<\/h2>\n  <p>The table below consolidates the 7-factor analysis into direct media recommendations for the most common substrate types encountered in industrial blasting operations.<\/p>\n\n  <div class=\"hlh-table-wrap\">\n    <table>\n      <thead>\n        <tr><th>Substrate<\/th><th>Recommended Media<\/th><th>Avoid<\/th><th>Key Constraint<\/th><\/tr>\n      <\/thead>\n      <tbody>\n        <tr><td>Carbon steel \u2014 heavy coating\/rust removal<\/td><td>Steel Grit GL\/GH or Al\u2082O\u2083 F36\u2013F60<\/td><td>Silica sand; glass bead<\/td><td>Achieve Sa 2.5, Rz 40\u201375 \u00b5m<\/td><\/tr>\n        <tr><td>Carbon steel \u2014 high volume (structural, shipbuilding)<\/td><td>Steel Grit (closed-loop reclaim)<\/td><td>Single-use slag (cost)<\/td><td>Cost per cycle drives selection<\/td><\/tr>\n        <tr><td>Stainless steel \u2014 decorative finish<\/td><td>Glass Bead (US 100\u2013170 mesh)<\/td><td>All steel media (iron contamination)<\/td><td>Zero iron contamination<\/td><\/tr>\n        <tr><td>Stainless steel \u2014 coating prep<\/td><td>White Aluminum Oxide F60\u2013F80<\/td><td>Brown Al\u2082O\u2083; steel media<\/td><td>Zero iron contamination<\/td><\/tr>\n        <tr><td>Aluminum alloy \u2014 general cleaning<\/td><td>Glass Bead or White Al\u2082O\u2083<\/td><td>Steel shot\/grit (galvanic corrosion)<\/td><td>No iron contamination; avoid over-profiling<\/td><\/tr>\n        <tr><td>Aluminum alloy \u2014 paint stripping (aerospace)<\/td><td>Melamine Plastic Grit<\/td><td>All mineral\/metallic media<\/td><td>Preserve anodize\/alodine layer<\/td><\/tr>\n        <tr><td>Titanium \/ nickel superalloy<\/td><td>White Al\u2082O\u2083 or Glass Bead<\/td><td>Steel media (iron); SiC (reactivity)<\/td><td>No iron contamination; no embedding<\/td><\/tr>\n        <tr><td>CFRP \/ composite<\/td><td>Melamine Plastic Grit (low pressure)<\/td><td>All hard mineral media<\/td><td>Protect fiber reinforcement from cutting<\/td><\/tr>\n        <tr><td>Technical ceramics \/ carbides<\/td><td>Carburo de silicio<\/td><td>Al\u2082O\u2083 (insufficient hardness)<\/td><td>Only SiC hard enough for effective processing<\/td><\/tr>\n        <tr><td>Wood \u2014 paint\/coating removal<\/td><td>Walnut Shell or Corn Cob<\/td><td>All mineral and metallic media<\/td><td>Preserve wood grain<\/td><\/tr>\n        <tr><td>Concrete \/ masonry<\/td><td>Steel Grit or Garnet<\/td><td>Silica sand; organic media<\/td><td>Achieve required surface profile for coating<\/td><\/tr>\n        <tr><td>Precision machined steel parts<\/td><td>Fine Al\u2082O\u2083 (F100\u2013F220) or Glass Bead<\/td><td>Coarse angular media<\/td><td>Preserve dimensional tolerances<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <h2 id=\"mistakes\">Common Selection Mistakes and How to Avoid Them<\/h2>\n\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Mistake 1: Choosing Media Based on Purchase Price Alone<\/div>\n    <p>The cheapest media per kilogram is rarely the cheapest media per effective blasting cycle. Single-use slag at $0.12\/kg sounds cheaper than steel grit at $1.50\/kg \u2014 until you account for 250 reuse cycles making the steel grit $0.006 per effective cycle versus $0.12 for the slag. Always calculate cost per cycle, not cost per kilogram.<\/p>\n  <\/div>\n\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Mistake 2: Using Steel Media on Non-Ferrous Substrates<\/div>\n    <p>Steel shot and steel grit must never be used on stainless steel, aluminum, copper, or other non-ferrous metals. Embedded ferrous particles cause rust staining, galvanic corrosion, and destruction of the passivation layer. This mistake is irreversible \u2014 the embedded particles cannot be fully removed after blasting. Always use iron-free media on non-ferrous substrates.<\/p>\n  <\/div>\n\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Mistake 3: Not Verifying Profile Depth Against Coating TDS<\/div>\n    <p>Blasting to &#8220;standard&#8221; conditions without confirming the actual profile depth against the specific coating system&#8217;s technical data sheet frequently results in either over-blasting (profile too deep, wasting abrasive and creating coating thickness variation) or under-blasting (profile too shallow, causing premature adhesion failure). Always specify profile in \u00b5m Rz, measure with a surface profilometer or replica tape, and compare to the coating TDS before starting production.<\/p>\n  <\/div>\n\n  <div class=\"hlh-box hlh-box-red\">\n    <div class=\"hlh-box-title\">Mistake 4: Ignoring Regulatory Requirements Until After Selection<\/div>\n    <p>Selecting media without first checking local regulations for crystalline silica, heavy metal content, and waste disposal requirements can result in significant compliance remediation costs after the fact. Check OSHA, EPA, or equivalent standards for your jurisdiction before finalizing any media specification, particularly if the operation involves portable blasting, outdoor work near water, or any substrates with lead or chromate coatings.<\/p>\n  <\/div>\n\n  <div class=\"hlh-cta\">\n    <h3>Let Our Technical Team Help You Select the Right Media<\/h3>\n    <p>Jiangsu Henglihong Technology manufactures aluminum oxide, silicon carbide, glass beads, and steel shot\/grit \u2014 covering the full range of high-performance industrial blasting media. Our technical team can review your application requirements and recommend the optimal media type, grade, and grit size specification.<\/p>\n    <a href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Technical Consultation<\/a>\n  <\/div>\n\n  <hr>\n\n  <h2 id=\"faq\">Preguntas frecuentes<\/h2>\n  <div class=\"hlh-faq\">\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhB2Toggle(this)\">What factors determine the right abrasive blasting media?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Seven key factors: (1) substrate material and sensitivity, (2) required surface finish or anchor profile, (3) hardness compatibility, (4) particle shape \u2014 angular for profiling, round for peening, (5) grit size for the target profile, (6) recyclability and total cost per cycle, and (7) safety and regulatory requirements. Work through them sequentially \u2014 each narrows your options until the right media is clear.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhB2Toggle(this)\">How do I know if a blasting media is too aggressive for my substrate?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">A media is too aggressive if it removes measurable substrate material beyond the contamination being cleaned, creates cracks or delamination, alters critical dimensions, or embeds abrasive particles. Start with the softest media that could plausibly work and increase aggressiveness only if needed. For sensitive substrates, always run test panels and measure before committing to a production specification.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhB2Toggle(this)\">Should I use angular or round blasting media?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Use angular media when you need a surface profile for coating adhesion or aggressive contamination removal. Use round media when you need shot peening for fatigue life improvement or a smooth decorative finish without profiling. Many structural steel applications benefit from a blended shot\/grit mixture \u2014 the grit creates the profile while the shot smooths the peak-to-valley ratio.<\/div>\n    <\/div>\n    <div class=\"hlh-faq-item\">\n      <button class=\"hlh-faq-q\" onclick=\"hlhB2Toggle(this)\">What blasting media should I use for aluminum?<span class=\"hlh-faq-arrow\">\u25bc<\/span><\/button>\n      <div class=\"hlh-faq-a\">Always use iron-free media on aluminum. Glass beads for peening and decorative satin finishing; white aluminum oxide for surface profiling before coatings; silicon carbide for aggressive preparation of hard aluminum alloys; plastic grit for stripping coatings without substrate alteration. Never use steel shot or steel grit \u2014 embedded ferrous particles cause galvanic corrosion and destroy any subsequent anodizing or coating.<\/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-comparison-chart-hardness-profile-cost\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Selection Guide<\/div>\n        <div class=\"rc-title\">Abrasive Blasting Media Comparison Chart: Hardness, Profile &amp; Cost<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/angular-vs-round-blasting-media-surface-profile-finish-differences\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Selection Guide<\/div>\n        <div class=\"rc-title\">Angular vs Round Blasting Media: Surface Profile &amp; Finish Differences<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/blasting-media-grit-size-mesh-size-guide-how-to-read-convert\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Selection Guide<\/div>\n        <div class=\"rc-title\">Blasting Media Grit Size &amp; Mesh Size Guide: How to Read &amp; Convert<\/div>\n      <\/a>\n      <a class=\"hlh-related-card\" href=\"https:\/\/hlh-js.com\/resource\/blog\/reusable-vs-single-use-blasting-media-cost-analysis-roi\/\" target=\"_blank\" rel=\"noopener\">\n        <div class=\"rc-label\">Selection Guide<\/div>\n        <div class=\"rc-title\">Reusable vs Single-Use Blasting Media: Cost Analysis &amp; ROI<\/div>\n      <\/a>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n<script>\n(function(){\n  function hlhB2Toggle(btn){\n    var item=btn.closest('.hlh-faq-item');\n    var isOpen=item.classList.contains('open');\n    document.querySelectorAll('.hlh-b2 .hlh-faq-item').forEach(function(el){el.classList.remove('open');});\n    if(!isOpen){item.classList.add('open');}\n  }\n  window.hlhB2Toggle=hlhB2Toggle;\n})();\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Selection Guide How to Choose Abrasive Blasting Media: 7 Key  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12768,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-12706","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/comments?post=12706"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12706\/revisions"}],"predecessor-version":[{"id":12708,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/12706\/revisions\/12708"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media\/12768"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media?parent=12706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/categories?post=12706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/tags?post=12706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}