{"id":13490,"date":"2026-06-24T06:36:50","date_gmt":"2026-06-24T06:36:50","guid":{"rendered":"https:\/\/hlh-js.com\/?p=13490"},"modified":"2026-06-24T06:36:50","modified_gmt":"2026-06-24T06:36:50","slug":"how-to-choose-abrasive-blast-media-5-step-selection-framework","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/fr\/resource\/blog\/how-to-choose-abrasive-blast-media-5-step-selection-framework\/","title":{"rendered":"How to Choose Abrasive Blast Media: 5-Step Selection Framework"},"content":{"rendered":"<style>\n.hlh-p{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;color:#2d3748;line-height:1.78;max-width:900px;margin:0 auto;font-size:1rem}\n.hlh-p *{box-sizing:border-box}\n.hlh-p p{margin:0 0 1.3rem}\n.hlh-p h1{font-size:2.25rem;font-weight:800;color:#1a3456;margin:0 0 1.25rem;line-height:1.25}\n.hlh-p h2{font-size:1.65rem;font-weight:700;color:#1a3456;margin:2.75rem 0 1rem;padding-bottom:.55rem;border-bottom:3px solid #d86e18}\n.hlh-p h3{font-size:1.15rem;font-weight:600;color:#1a3456;margin:1.6rem 0 .5rem}\n.hlh-p ul,.hlh-p ol{margin:0 0 1.25rem;padding-left:1.5rem}\n.hlh-p li{margin:.35rem 0}\n.hlh-p strong{font-weight:600;color:#1a3456}\n.hlh-p a{color:#d86e18;text-decoration:none}\n.hlh-p a:hover{text-decoration:underline;color:#b55c14}\n.hlh-toc{background:#f7f9fc;border:1px solid #dde4ef;border-left:4px solid #d86e18;border-radius:8px;padding:1.4rem 1.75rem;margin:2rem 0}\n.hlh-toc-ttl{font-size:.76rem;text-transform:uppercase;letter-spacing:.09em;color:#7a8aa0;font-weight:700;margin:0 0 .75rem}\n.hlh-toc ol{margin:0;padding-left:1.2rem}\n.hlh-toc li{margin:.3rem 0;font-size:.9rem}\n.hlh-toc a{color:#1a3456;font-weight:500;text-decoration:none}\n.hlh-toc a:hover{color:#d86e18}\n.hlh-callout{background:#eef5ff;border-left:4px solid #3b82f6;border-radius:6px;padding:1rem 1.3rem;margin:1.5rem 0}\n.hlh-callout p{margin:0;font-size:.9rem;color:#1e3a5f;line-height:1.65}\n.hlh-notice{background:#fff8ed;border-left:4px solid #d86e18;border-radius:6px;padding:1rem 1.3rem;margin:1.5rem 0}\n.hlh-notice p{margin:0;font-size:.9rem;color:#7a4a10;line-height:1.65}\n.hlh-twrap{overflow-x:auto;margin:1.5rem 0;border-radius:8px;border:1px solid #e5eaf2}\n.hlh-tbl{width:100%;border-collapse:collapse;font-size:.84rem;min-width:500px}\n.hlh-tbl thead th{background:#1a3456;color:#fff;padding:.75rem 1rem;text-align:left;font-weight:600;white-space:nowrap}\n.hlh-tbl tbody td{padding:.6rem 1rem;border-bottom:1px solid #eef1f7;color:#2d3748;vertical-align:top}\n.hlh-tbl tbody tr:last-child td{border-bottom:none}\n.hlh-tbl tbody tr:nth-child(even) td{background:#f8fafd}\n.hlh-tbl tbody tr:hover td{background:#edf4ff}\n.hlh-good{color:#15803d;font-weight:600}\n.hlh-fair{color:#b45309;font-weight:600}\n.hlh-steps{margin:1.75rem 0}\n.hlh-step{display:flex;gap:1.1rem;margin:1.25rem 0;align-items:flex-start;background:#fff;border:1px solid #e5eaf2;border-radius:10px;padding:1.1rem 1.25rem}\n.hlh-sbadge{background:#1a3456;color:#fff;border-radius:8px;min-width:38px;height:38px;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:700;flex-shrink:0}\n.hlh-sbody h4{margin:0 0 .3rem;font-size:1rem;color:#1a3456}\n.hlh-sbody p{margin:0;font-size:.88rem;color:#5a6a80;line-height:1.65}\n.hlh-flist{margin:1rem 0}\n.hlh-fitem{border:1px solid #e5eaf2;border-radius:8px;margin:.6rem 0;padding:1rem 1.25rem}\n.hlh-fq{font-weight:600;color:#1a3456;font-size:.93rem;margin:0 0 .5rem}\n.hlh-fa{font-size:.88rem;color:#5a6a80;margin:0;line-height:1.65}\n.hlh-cta{background:linear-gradient(130deg,#1a3456 0%,#2a508a 100%);border-radius:12px;padding:2.5rem 2rem;text-align:center;margin:3rem 0 1rem;color:#fff}\n.hlh-cta h2{color:#fff!important;border:none!important;margin:0 0 .75rem;font-size:1.45rem;padding:0!important}\n.hlh-cta p{color:rgba(255,255,255,.88);margin:0 0 1.5rem;font-size:1rem}\n.hlh-ctabtn{display:inline-block;background:#d86e18;color:#fff!important;padding:.8rem 2.25rem;border-radius:50px;font-weight:700;text-decoration:none!important;font-size:.95rem}\n.hlh-ctabtn:hover{background:#b55c14!important}\n@media(max-width:640px){.hlh-cta{padding:1.75rem 1.25rem}}\n<\/style>\n\n<div class=\"hlh-p\">\n<h1>How to Choose Abrasive Blast Media: 5-Step Selection Framework<\/h1>\n\n<p>The abrasive media selection decision is made in every blasting operation, often quickly and without a formal process \u2014 and when it goes wrong, the consequences range from failed coating inspections to damaged substrates and rework costs that dwarf the cost of the media itself. A structured selection framework eliminates the guesswork, replaces intuition with documented criteria, and ensures that the media chosen for each project is defensible against the specification requirements that the finished surface must meet.<\/p>\n\n<p>This five-step framework has been designed for procurement managers, project engineers, and blasting contractors who need to specify abrasive media correctly the first time, across a range of substrates, coating systems, equipment types, and project economics. It draws on the full range of abrasive media options available from Jiangsu Henglihong Technology Co., Ltd. For a complete overview of all available media types before using this framework, see the <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-media-supplies\/\" target=\"_blank\" rel=\"noopener\">Abrasive Media Supplies Buyer&#8217;s Guide<\/a>.<\/p>\n\n<div class=\"hlh-toc\">\n  <div class=\"hlh-toc-ttl\">Table of Contents<\/div>\n  <ol>\n    <li><a href=\"#ch-why\">Why a Selection Framework Matters<\/a><\/li>\n    <li><a href=\"#ch-step1\">Step 1: Define the Substrate<\/a><\/li>\n    <li><a href=\"#ch-step2\">Step 2: Set the Surface Profile and Cleanliness Target<\/a><\/li>\n    <li><a href=\"#ch-step3\">Step 3: Confirm Equipment Compatibility<\/a><\/li>\n    <li><a href=\"#ch-step4\">Step 4: Evaluate Recyclability and Environmental Constraints<\/a><\/li>\n    <li><a href=\"#ch-step5\">Step 5: Calculate Total Cost of Ownership<\/a><\/li>\n    <li><a href=\"#ch-matrix\">Quick Selection Matrix<\/a><\/li>\n    <li><a href=\"#ch-faq\">Questions fr\u00e9quemment pos\u00e9es<\/a><\/li>\n  <\/ol>\n<\/div>\n\n<h2 id=\"ch-why\">Why a Selection Framework Matters<\/h2>\n<p>The consequences of a wrong media selection fall into three categories:<\/p>\n<ul>\n  <li><strong>Performance failures:<\/strong> Profile too shallow \u2192 coating adhesion failure; profile too deep \u2192 peak perforation through thin coatings; wrong media on sensitive substrate \u2192 warping, embedding, or dimensional change; wrong particle shape for equipment type \u2192 rapid machine wear<\/li>\n  <li><strong>Compliance failures:<\/strong> Using media with elevated free silica \u2192 OSHA violation; using metallic media where contamination is prohibited \u2192 specification rejection; blasting to wrong Sa grade \u2192 coating inspector rejection<\/li>\n  <li><strong>Economic failures:<\/strong> Choosing single-use media at high volume \u2192 5\u201310\u00d7 higher media cost per square meter vs recyclable alternative; choosing over-specified premium media for a basic application \u2192 unnecessary cost premium with no performance benefit<\/li>\n<\/ul>\n<p>None of these outcomes is inevitable if the selection follows a consistent, documented process. The five steps below address each of these failure modes in sequence.<\/p>\n\n<h2 id=\"ch-step1\">Step 1: Define the Substrate<\/h2>\n\n<div class=\"hlh-steps\">\n  <div class=\"hlh-step\">\n    <div class=\"hlh-sbadge\">1<\/div>\n    <div class=\"hlh-sbody\">\n      <h4>Identify the substrate material, alloy, hardness, and gauge<\/h4>\n      <p>The substrate&#8217;s hardness determines which abrasives can cut it effectively without excessive media wear, and its sensitivity to deformation determines the maximum impact energy that can be applied safely. A 20 mm thick carbon steel plate is almost infinitely tolerant of aggressive media; a 0.8 mm aluminum aircraft skin panel is not. The hardness differential between abrasive and substrate should be at least 1.5\u20132 Mohs for productive cutting \u2014 an abrasive approaching the same hardness as the substrate grinds rather than cuts, consuming media rapidly and generating excessive dust without productive material removal.<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<p>Use the following substrate hardness guide to establish the minimum acceptable media hardness:<\/p>\n\n<div class=\"hlh-twrap\">\n  <table class=\"hlh-tbl\">\n    <thead>\n      <tr><th>Substrate Material<\/th><th>Approx. Mohs Hardness<\/th><th>Minimum Media Hardness<\/th><th>Soft Media Limit (if applicable)<\/th><\/tr>\n    <\/thead>\n    <tbody>\n      <tr><td>Mild carbon steel<\/td><td>4.5\u20135.5<\/td><td>7.0 Mohs minimum<\/td><td>No limit (hard substrate)<\/td><\/tr>\n      <tr><td>Stainless steel (austenitic)<\/td><td>5.5\u20136.5<\/td><td>7.0 Mohs minimum<\/td><td>No iron contamination allowed<\/td><\/tr>\n      <tr><td>Aluminum alloys (2xxx\/6xxx\/7xxx)<\/td><td>2.5\u20133.5<\/td><td>No minimum (but max 5.5 for no distortion)<\/td><td>Max 4.0 for thin gauge (&lt;2 mm)<\/td><\/tr>\n      <tr><td>Titanium alloys<\/td><td>6.0<\/td><td>7.0 Mohs minimum<\/td><td>No iron contamination allowed<\/td><\/tr>\n      <tr><td>Fiberglass \/ GFRP composites<\/td><td>3.5\u20135.0<\/td><td>No minimum (but max 4.0 for no fiber damage)<\/td><td>Max 4.0 Mohs<\/td><\/tr>\n      <tr><td>CFRP carbon composites<\/td><td>7.0 (fiber) \/ 3.5 (matrix)<\/td><td>Below fiber hardness (target matrix only)<\/td><td>Max 4.0 Mohs for matrix prep<\/td><\/tr>\n      <tr><td>Glass (standard float)<\/td><td>5.5<\/td><td>7.5 minimum for etching<\/td><td>N\/A (etching application)<\/td><\/tr>\n      <tr><td>Granite \/ engineered stone<\/td><td>6.0\u20137.0<\/td><td>8.5 minimum<\/td><td>N\/A<\/td><\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n<h2 id=\"ch-step2\">Step 2: Set the Surface Profile and Cleanliness Target<\/h2>\n\n<div class=\"hlh-steps\">\n  <div class=\"hlh-step\">\n    <div class=\"hlh-sbadge\">2<\/div>\n    <div class=\"hlh-sbody\">\n      <h4>Read the coating specification and define the required Sa grade and Rz profile window<\/h4>\n      <p>Every industrial coating system has a documented application data sheet (ADS) specifying the required surface cleanliness (ISO Sa or SSPC\/NACE grade) and the anchor profile range (minimum and maximum Rz or Ra, typically in \u00b5m or mils). These are non-negotiable \u2014 they are the coating manufacturer&#8217;s performance warranty conditions. Read the ADS before touching any abrasive media specification. If the project involves a choice between coating systems, compare the surface preparation requirements and factor them into the system selection \u2014 a coating system with a narrower specification window may require more precise media selection and tighter process control.<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<p>Once the target profile window is established, use the grit size reference tables to identify candidate media in the correct size range for that profile. For a full cross-reference of grit sizes to achievable profiles across all media types, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-media-grit-mesh-size-chart-complete-reference-guide\/\" target=\"_blank\" rel=\"noopener\">Abrasive Media Grit &amp; Mesh Size Chart: Complete Reference Guide<\/a>.<\/p>\n\n<h2 id=\"ch-step3\">Step 3: Confirm Equipment Compatibility<\/h2>\n\n<div class=\"hlh-steps\">\n  <div class=\"hlh-step\">\n    <div class=\"hlh-sbadge\">3<\/div>\n    <div class=\"hlh-sbody\">\n      <h4>Match the candidate media to the blast equipment in use<\/h4>\n      <p>Blast equipment type is a hard constraint, not a preference. Centrifugal wheel blast machines are designed for metallic media (steel shot and grit) \u2014 running lightweight mineral or synthetic abrasives in a wheel machine causes rapid wear of impeller blades, liners, and paddles, and the low-density media does not achieve sufficient velocity for productive blasting. Air-powered pressure blast and suction blast systems are compatible with a wider range of media types, but media density, particle size, and flowability affect nozzle wear rate and optimal pressure settings. Check: (a) is this equipment rated for the media density and type under consideration? (b) what nozzle material is installed \u2014 tungsten carbide nozzles handle hard abrasives well; boron carbide nozzles provide better wear life with high-hardness media at sustained production rates?<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<p>For a full technical guide to equipment-media compatibility across all three equipment types, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/blast-media-equipment-compatibility-guide-pressure-vs-suction-vs-wheel\/\" target=\"_blank\" rel=\"noopener\">Blast Media &amp; Equipment Compatibility Guide: Pressure vs Suction vs Wheel<\/a>.<\/p>\n\n<h2 id=\"ch-step4\">Step 4: Evaluate Recyclability and Environmental Constraints<\/h2>\n\n<div class=\"hlh-steps\">\n  <div class=\"hlh-step\">\n    <div class=\"hlh-sbadge\">4<\/div>\n    <div class=\"hlh-sbody\">\n      <h4>Determine reuse requirements and regulatory constraints<\/h4>\n      <p>Recyclability affects both economics and environmental compliance. High-reuse metallic media (steel shot at 3,000 cycles, aluminum oxide at 50\u2013100 cycles) amortizes its higher unit cost across many cycles, producing a lower cost per square meter at high production volumes. Single-use or low-reuse mineral media (copper slag at 1\u20132 cycles, garnet at 5\u201310 cycles) has lower unit cost but generates proportionally more waste per square meter of prepared surface. The regulatory status of spent media \u2014 is it classified as non-hazardous solid waste, or does the stripped coating contamination elevate it to hazardous? \u2014 determines the disposal cost, which can be significant for lead-paint stripping or chromate-primer removal jobs. On projects subject to environmental permit conditions limiting abrasive waste generation, the reuse cycle count of the selected media may be a regulatory constraint, not just an economic preference.<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<h2 id=\"ch-step5\">Step 5: Calculate Total Cost of Ownership<\/h2>\n\n<div class=\"hlh-steps\">\n  <div class=\"hlh-step\">\n    <div class=\"hlh-sbadge\">5<\/div>\n    <div class=\"hlh-sbody\">\n      <h4>Run the TCO calculation before finalizing the specification<\/h4>\n      <p>Total cost of ownership per square meter = (media unit cost \u00f7 reuse cycles) + (media consumption rate kg\/m\u00b2) + equipment wear cost attributable to media + waste disposal cost per m\u00b2 + labor efficiency factor (does the media cut faster or slower than the baseline?). Run this calculation for the two or three shortlisted media candidates that have passed Steps 1\u20134. The TCO result frequently reverses the intuitive ranking based on unit price alone \u2014 media priced at 3\u00d7 the per-bag cost of an alternative but delivering 20\u00d7 the reuse cycles is almost always the lower-TCO choice on any meaningful production volume. For a detailed worked example: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/recyclable-vs-single-use-abrasive-media-cost-per-cycle-analysis\/\" target=\"_blank\" rel=\"noopener\">Recyclable vs Single-Use Abrasive Media: Cost-Per-Cycle Analysis<\/a>.<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<h2 id=\"ch-matrix\">Quick Selection Matrix<\/h2>\n<p>After applying all five steps, use this matrix to confirm your final selection:<\/p>\n\n<div class=\"hlh-twrap\">\n  <table class=\"hlh-tbl\">\n    <thead>\n      <tr><th>Scenario<\/th><th>First-Choice Media<\/th><th>Alternative<\/th><th>Key Article<\/th><\/tr>\n    <\/thead>\n    <tbody>\n      <tr><td>Carbon steel, Sa 2.5, Rz 40\u201375 \u00b5m, field blast<\/td><td>Garnet #30\/60<\/td><td>Copper Slag medium<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/garnet-blast-media-why-professionals-choose-it-for-surface-prep\/\" target=\"_blank\" rel=\"noopener\">Garnet guide<\/a><\/td><\/tr>\n      <tr><td>Carbon steel, Sa 3, Rz 60\u2013100 \u00b5m, production shop<\/td><td>Steel Grit GL 25\u2013GL 40<\/td><td>Steel Shot + Grit blend<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/steel-grit-vs-steel-shot-choosing-the-right-metallic-blast-media\/\" target=\"_blank\" rel=\"noopener\">Metallic media guide<\/a><\/td><\/tr>\n      <tr><td>Aluminum alloy, no iron contamination, peening<\/td><td>Glass Beads Class A\u2013B<\/td><td>Plastic Grit Urea Type II<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/glass-bead-blast-media-smooth-finish-without-surface-damage\/\" target=\"_blank\" rel=\"noopener\">Glass bead guide<\/a><\/td><\/tr>\n      <tr><td>Precision blasting, no iron, Sa 3, thermal spray prep<\/td><td>White Aluminum Oxide F 36\u2013F 60<\/td><td>\u2014<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/aluminum-oxide-abrasive-media-grades-grit-sizes-applications\/\" target=\"_blank\" rel=\"noopener\">Al\u2082O\u2083 guide<\/a><\/td><\/tr>\n      <tr><td>Glass etching, sandcarving studio<\/td><td>Black Silicon Carbide F 80<\/td><td>Brown Al\u2082O\u2083 F 80\u2013F 100<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/silicon-carbide-abrasive-media-the-hardest-grit-for-precision-work\/\" target=\"_blank\" rel=\"noopener\">SiC guide<\/a><\/td><\/tr>\n      <tr><td>Aircraft paint stripping, aluminum airframe<\/td><td>Melamine Grit Type V 20\u201330 grit<\/td><td>Urea Grit Type II 20\u201330 grit<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-abrasive-media-urea-vs-melamine-grit-for-delicate-substrates\/\" target=\"_blank\" rel=\"noopener\">Plastic grit guide<\/a><\/td><\/tr>\n      <tr><td>High-volume continuous production, lowest TCO<\/td><td>Steel Shot (wheel blast)<\/td><td>Steel Grit blend<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/recyclable-vs-single-use-abrasive-media-cost-per-cycle-analysis\/\" target=\"_blank\" rel=\"noopener\">TCO analysis<\/a><\/td><\/tr>\n      <tr><td>OSHA compliance, silica-free, field application<\/td><td>Garnet #30\/60<\/td><td>Steel Grit GL 40<\/td><td><a href=\"https:\/\/hlh-js.com\/resource\/blog\/silica-free-eco-friendly-abrasive-blast-media-osha-compliant-options\/\" target=\"_blank\" rel=\"noopener\">Silica-free guide<\/a><\/td><\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n<h2 id=\"ch-faq\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n<div class=\"hlh-flist\">\n\n  <div class=\"hlh-fitem\">\n    <div class=\"hlh-fq\">What if two media types both pass all five steps \u2014 how do I choose between them?<\/div>\n    <p class=\"hlh-fa\">When two candidates both satisfy the technical specification, equipment compatibility, and environmental constraints, the decision should be made on TCO and supply reliability. Calculate the TCO per square meter for each option at your expected annual volume, including all cost components (media, disposal, equipment wear, labor efficiency). If the TCO difference is within 5\u201310%, favor the option with the more reliable supply chain and more consistent quality documentation \u2014 specification conformance and batch-to-batch consistency are worth a small premium in any operation where coating inspection failures carry significant rework and delay costs.<\/p>\n  <\/div>\n\n  <div class=\"hlh-fitem\">\n    <div class=\"hlh-fq\">How often should I revisit the media specification for an ongoing project?<\/div>\n    <p class=\"hlh-fa\">For long-running projects or continuous production operations, the media specification should be reviewed when: (a) the coating specification changes; (b) blast equipment is upgraded or changed; (c) media unit pricing shifts significantly (a 20%+ change in media cost often changes the TCO ranking between recyclable and single-use options); (d) regulatory changes affect silica limits or waste disposal requirements; or (e) surface inspection failure rates increase, suggesting the current media is no longer meeting the profile or cleanliness standard. Annual review as part of project or production planning is a reasonable minimum frequency for any significant blasting operation.<\/p>\n  <\/div>\n\n  <div class=\"hlh-fitem\">\n    <div class=\"hlh-fq\">Should media selection be included in the coating specification document?<\/div>\n    <p class=\"hlh-fa\">Yes. A complete surface preparation specification should document: the required Sa cleanliness grade, the required anchor profile range (min and max Rz), the approved abrasive media type(s) and grade\/size designation, any prohibited media (e.g., silica sand, iron-contaminating media on stainless), the maximum time between blasting and coating application, and the required QC checks before coating. Documenting the media specification prevents ad-hoc substitutions by blasting contractors that may satisfy the Sa grade visually while producing a profile outside the coating manufacturer&#8217;s specification. This is particularly important on large projects where multiple blasting subcontractors or work shifts are involved.<\/p>\n  <\/div>\n\n<\/div>\n\n<div class=\"hlh-cta\">\n  <h2>Need Help Specifying the Right Abrasive Media?<\/h2>\n  <p>Jiangsu Henglihong Technology Co., Ltd.&#8217;s technical team will review your substrate, coating specification, and equipment setup and recommend the correct media and grit size \u2014 at no cost, before you order.<\/p>\n  <a href=\"https:\/\/hlh-js.com\/contact\/\" class=\"hlh-ctabtn\" target=\"_blank\" rel=\"noopener\">Request a Free Consultation<\/a>\n<\/div>\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>How to Choose Abrasive Blast Media: 5-Step Selection Framework The  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":13492,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-13490","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/13490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/comments?post=13490"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/13490\/revisions"}],"predecessor-version":[{"id":13493,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/posts\/13490\/revisions\/13493"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media\/13492"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/media?parent=13490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/categories?post=13490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/fr\/wp-json\/wp\/v2\/tags?post=13490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}