{"id":12297,"date":"2026-02-26T03:50:41","date_gmt":"2026-02-26T03:50:41","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12297"},"modified":"2026-03-02T06:48:56","modified_gmt":"2026-03-02T06:48:56","slug":"what-is-plastic-media-the-complete-guide-to-types-uses-applications","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/zh\/resource\/blog\/what-is-plastic-media-the-complete-guide-to-types-uses-applications\/","title":{"rendered":"What Is Plastic Media? The Complete Guide to Types, Uses &amp; Applications"},"content":{"rendered":"<!-- ============================================================\n     PLASTIC MEDIA PILLAR PAGE \u2014 WordPress Post Content\n     \u7c98\u8d34\u65b9\u5f0f\uff1aWordPress \u7f16\u8f91\u5668 \u2192 \u53f3\u4e0a\u89d2\u5207\u6362\u300c\u4ee3\u7801\u7f16\u8f91\u5668\u300d\u2192 \u5168\u90e8\u66ff\u6362\u7c98\u8d34\n     \u6216\u5728 Gutenberg \u4e2d\u63d2\u5165\u300c\u81ea\u5b9a\u4e49 HTML\u300d\u5757\u7c98\u8d34\u6b64\u5185\u5bb9\n     ============================================================ -->\n\n<style>\n\/* \u2500\u2500 \u4ec5\u4f5c\u7528\u4e8e\u6587\u7ae0\u5185\u5bb9\u533a\u57df\u7684\u6837\u5f0f\uff0c\u4f7f\u7528 .pm- \u524d\u7f00\u907f\u514d\u4e0e\u4e3b\u9898\u51b2\u7a81 \u2500\u2500 *\/\n.pm-toc{background:#f8f9fa;border:1px solid #e2e8f0;border-left:4px solid #2563eb;padding:24px 28px;margin:0 0 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0}\n.pm-diff-card{background:#f8fafc;border:1px solid #e2e8f0;padding:20px;border-radius:6px}\n.pm-diff-num{font-size:36px;font-weight:900;color:#e2e8f0;line-height:1;margin-bottom:6px}\n.pm-diff-card h4{font-size:13px;font-weight:700;color:#2563eb;text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px}\n.pm-diff-card p{font-size:13px;color:#6b7280;margin:0;line-height:1.6}\n\n.pm-section-divider{border:none;border-top:1px solid #f1f5f9;margin:48px 0}\n\n@media(max-width:640px){\n  .pm-card-grid{grid-template-columns:1fr 1fr}\n  .pm-diff-grid{grid-template-columns:1fr}\n  .pm-step{flex-direction:column;gap:8px}\n}\n@media(max-width:400px){\n  .pm-card-grid{grid-template-columns:1fr}\n}\n<\/style>\n\n<h1 id=\"pm-definition\">What Is Plastic Media? The Complete Guide to Types, Uses &#038; Applications<\/h1>\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\n     TABLE OF CONTENTS\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 -->\n<nav class=\"pm-toc\" aria-label=\"Table of Contents\">\n  <p class=\"pm-toc-title\">\ud83d\udccb Table of Contents<\/p>\n  <ol>\n    <li><a href=\"#pm-definition\">What Is Plastic Media?<\/a><\/li>\n    <li><a href=\"#pm-types\">Types of Plastic Media<\/a>\n      <ol>\n        <li><a href=\"#pm-urea\">Type II \u2014 Urea Formaldehyde<\/a><\/li>\n        <li><a href=\"#pm-melamine\">Type III \u2014 Melamine<\/a><\/li>\n        <li><a href=\"#pm-acrylic\">Type V \u2014 Acrylic (PMMA)<\/a><\/li>\n        <li><a href=\"#pm-polyester\">Type I \u2014 Polyester<\/a><\/li>\n      <\/ol>\n    <\/li>\n    <li><a href=\"#pm-advantages\">Key Properties &amp; Advantages<\/a><\/li>\n    <li><a href=\"#pm-applications\">Industry Applications<\/a><\/li>\n    <li><a href=\"#pm-selection\">How to Choose the Right Type<\/a><\/li>\n    <li><a href=\"#pm-vs\">Plastic Media vs Alternatives<\/a><\/li>\n    <li><a href=\"#pm-milspec\">MIL-SPEC Standards &amp; Compliance<\/a><\/li>\n    <li><a href=\"#pm-faq\">Frequently Asked Questions<\/a><\/li>\n    <li><a href=\"#pm-related\">Related Guides &amp; Resources<\/a><\/li>\n    <li><a href=\"#pm-diff\">Tools &amp; Exclusive Resources<\/a><\/li>\n  <\/ol>\n<\/nav>\n\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\n     SECTION 1 \u2014 DEFINITION\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 -->\n<h2 id=\"pm-definition\">What Is Plastic Media?<\/h2>\n\n<p>Plastic media refers to a category of synthetic abrasive particles engineered specifically for surface preparation, paint stripping, deburring, deflashing, and part finishing. Unlike conventional mineral abrasives such as silica sand, garnet, or steel grit, plastic media is manufactured from thermosetting or thermoplastic resins \u2014 most commonly urea formaldehyde, melamine formaldehyde, acrylic, and polyester \u2014 and shaped into angular, irregular granules or precision geometric forms.<\/p>\n\n<p>The defining characteristic of plastic media is its <strong>low-density, controlled hardness<\/strong>. With a Mohs hardness typically ranging from 3 to 4, plastic abrasives are soft enough to strip coatings without gouging or dimensionally altering the underlying substrate. This makes them uniquely valuable wherever substrate integrity is non-negotiable \u2014 think aircraft aluminum skins, composite panels, thin-gauge sheet metal, and intricate die-cast parts.<\/p>\n\n<p>First developed for military aviation applications in the 1970s and 1980s \u2014 where stripping paint from aircraft without damaging the aluminum skin was a critical maintenance challenge \u2014 plastic media has since expanded into automotive refinishing, electronics manufacturing, mold maintenance, and decorative metal finishing. Today it is codified under the U.S. military standard <strong>MIL-P-85891A<\/strong> and used by aerospace OEMs, defense contractors, and precision job shops around the world.<\/p>\n\n<div class=\"pm-callout\">\n  <strong>Quick Definition:<\/strong> Plastic media = thermosetting or thermoplastic resin abrasive particles designed to remove coatings, flash, or surface contamination without damaging metal, composite, or plastic substrates.\n<\/div>\n\n<p>It is important to distinguish between two primary <em>modes of use<\/em> for plastic media: <strong>blast media<\/strong> (propelled by compressed air or centrifugal wheels against a surface) and <strong>tumbling\/vibratory media<\/strong> (used in mass finishing bowls or tubs to deburr, burnish, or polish parts in bulk). Both share the same raw materials but differ in shape, bulk density, and the finishing outcome they deliver.<\/p>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 2 \u2014 TYPES\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 -->\n<h2 id=\"pm-types\">Types of Plastic Media<\/h2>\n\n<p>Not all plastic media performs the same. The resin chemistry, particle geometry, and MIL-SPEC type designation fundamentally determine aggressiveness, substrate compatibility, and reusability. Here is a comprehensive breakdown of the four principal types.<\/p>\n\n\n<h3 id=\"pm-urea\">Type II \u2014 Urea Formaldehyde<\/h3>\n\n<p>Urea formaldehyde media is the workhorse of the plastic blast media family. It offers a <strong>medium hardness<\/strong> (Mohs ~3.5) and angular particle shape, making it aggressive enough to strip multiple layers of epoxy primer and topcoat yet still safe for aluminum alloys commonly used in aerospace and automotive structures. Type II is available in mesh sizes from 12 to 80, with coarser grades for heavy coating removal and finer grades for light surface scuffing prior to re-coating.<\/p>\n\n<p>Its relatively low cost per cycle and good recyclability \u2014 typically 3\u20136 passes through a blast cabinet before particle breakdown \u2014 make it the most commercially widespread plastic blast abrasive. Learn more in our dedicated guides: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-blast-media-types-compared-urea-vs-melamine-vs-acrylic\/\">Plastic Blast Media Types Compared: Urea vs Melamine vs Acrylic<\/a> \u548c <a href=\"https:\/\/hlh-js.com\/resource\/blog\/type-ii-urea-plastic-abrasive-when-and-why-to-use-it\/\">Type II Urea Plastic Abrasive: When and Why to Use It<\/a>.<\/p>\n\n\n<h3 id=\"pm-melamine\">Type III \u2014 Melamine Formaldehyde<\/h3>\n\n<p>Melamine is the hardest of the common plastic blast media types, with a Mohs hardness of approximately 4.0. Its increased hardness translates to greater aggressiveness on hard coatings \u2014 powder coats, mil-spec primers, and thick polyurethane topcoats \u2014 and makes it particularly effective on harder substrates such as titanium and steel. The tradeoff is that it is less forgiving on thin aluminum skins and composite laminates, where it can cause fiber pull-out or surface micro-fracturing if process parameters are not carefully controlled.<\/p>\n\n<p>Type III also generates more heat during impact, which must be managed in temperature-sensitive applications. Despite its limitations, melamine is the preferred choice when throughput speed is paramount and the substrate can tolerate a more aggressive media.<\/p>\n\n\n<h3 id=\"pm-acrylic\">Type V \u2014 Acrylic (PMMA)<\/h3>\n\n<p>Acrylic media is the softest and most delicate of the mainstream plastic abrasives, with a Mohs hardness closer to 3.0. Precision-engineered from polymethyl methacrylate (PMMA), Type V media excels in applications demanding the gentlest possible surface treatment \u2014 stripping paint from CFRP (carbon fiber reinforced polymer) panels, cleaning delicate electronic assemblies, or lightly scuffing plastic injection-molded parts prior to painting. Read more: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/acrylic-type-v-plastic-media-for-sensitive-surfaces\/\">Acrylic (Type V) Plastic Media for Sensitive Surfaces<\/a>.<\/p>\n\n<p>Because acrylic is less mechanically robust, it has a shorter reuse cycle than urea or melamine \u2014 typically 2\u20134 passes. However, the substrate protection it offers is unmatched among thermosetting abrasives, which makes its higher per-pass cost justifiable in high-value component finishing.<\/p>\n\n\n<h3 id=\"pm-polyester\">Type I \u2014 Polyester<\/h3>\n\n<p>Polyester media (Type I) sits at the softer end of the hardness spectrum alongside acrylic. It is primarily used in <strong>vibratory and tumbling mass finishing<\/strong> applications rather than in blast cabinets, where its cushioned impact action delivers gentle deburring, edge radiusing, and pre-plate finishing on zinc, brass, aluminum, and copper alloy parts. Its resilience and slow breakdown rate make it highly cost-effective in long-run tumbling operations.<\/p>\n\n<p>For a full comparison of blast media versus tumbling media use cases, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-tumbling-media-vs-blast-media-whats-the-difference\/\">Plastic Tumbling Media vs Blast Media: What&#8217;s the Difference?<\/a> \u548c <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-tumbling-media-for-aluminum-parts-finishing\/\">Using Plastic Tumbling Media for Aluminum Parts Finishing<\/a>.<\/p>\n\n\n<h4>Type Comparison at a Glance<\/h4>\n<div class=\"pm-table-wrap\">\n  <table>\n    <thead>\n      <tr>\n        <th>\u7c7b\u578b<\/th>\n        <th>Resin<\/th>\n        <th>\u83ab\u6c0f\u786c\u5ea6<\/th>\n        <th>Aggressiveness<\/th>\n        <th>Best For<\/th>\n        <th>Reuse Cycles<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Type I<\/td>\n        <td>Polyester<\/td>\n        <td>3.0<\/td>\n        <td><span class=\"pm-badge pm-badge-blue\">Low<\/span><\/td>\n        <td>Tumbling, deburring, burnishing<\/td>\n        <td>High (10+)<\/td>\n      <\/tr>\n      <tr>\n        <td>Type II<\/td>\n        <td>Urea Formaldehyde<\/td>\n        <td>3.5<\/td>\n        <td><span class=\"pm-badge pm-badge-med\">Medium<\/span><\/td>\n        <td>Aerospace depainting, automotive<\/td>\n        <td>3\u20136 cycles<\/td>\n      <\/tr>\n      <tr>\n        <td>Type III<\/td>\n        <td>Melamine<\/td>\n        <td>4.0<\/td>\n        <td><span class=\"pm-badge pm-badge-low\">High<\/span><\/td>\n        <td>Hard coatings, steel, titanium<\/td>\n        <td>4\u20138 cycles<\/td>\n      <\/tr>\n      <tr>\n        <td>Type V<\/td>\n        <td>Acrylic (PMMA)<\/td>\n        <td>3.0<\/td>\n        <td><span class=\"pm-badge pm-badge-blue\">Very Low<\/span><\/td>\n        <td>Composites, electronics, plastics<\/td>\n        <td>2\u20134 cycles<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 3 \u2014 ADVANTAGES\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 -->\n<h2 id=\"pm-advantages\">Key Properties &amp; Advantages<\/h2>\n\n<p>What makes plastic media the preferred abrasive in precision industries? Several intrinsic properties set it apart from mineral, metallic, and organic alternatives:<\/p>\n\n<div class=\"pm-card-grid\">\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\ud83d\udee1\ufe0f<\/div>\n    <h4>Substrate Safety<\/h4>\n    <p>Low Mohs hardness prevents dimensional alteration of aluminum, CFRP, and composite substrates. No embedment of abrasive particles into the workpiece surface.<\/p>\n  <\/div>\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\u267b\ufe0f<\/div>\n    <h4>\u53ef\u56de\u6536\u6027<\/h4>\n    <p>Multiple reuse cycles per charge dramatically reduce per-part abrasive cost. Separation systems remove broken particles and coating debris between passes.<\/p>\n  <\/div>\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\ud83d\udd2c<\/div>\n    <h4>Profile Control<\/h4>\n    <p>Achieves near-zero anchor profile on sensitive substrates \u2014 critical where aerodynamic smoothness or bonding surface geometry is specified.<\/p>\n  <\/div>\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\u2696\ufe0f<\/div>\n    <h4>MIL-SPEC Certified<\/h4>\n    <p>Manufactured and tested to MIL-P-85891A standards, ensuring process repeatability and traceability for defense and aerospace supply chains.<\/p>\n  <\/div>\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\ud83c\udf3f<\/div>\n    <h4>Lower Dust &amp; Silica Risk<\/h4>\n    <p>Unlike silica sand, plastic media generates no free crystalline silica dust, dramatically reducing occupational health risk without sacrificing performance.<\/p>\n  <\/div>\n  <div class=\"pm-card\">\n    <div class=\"pm-card-icon\">\ud83d\udcb0<\/div>\n    <h4>Lower Total Cost<\/h4>\n    <p>Reusability and elimination of substrate rework often makes plastic media more cost-effective than cheaper single-use abrasives over a full production run.<\/p>\n  <\/div>\n<\/div>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 4 \u2014 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\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<h2 id=\"pm-applications\">Industry Applications<\/h2>\n\n<p>Plastic media&#8217;s combination of substrate safety, coating removal efficiency, and process control has made it indispensable across a wide range of industries. Below are the primary verticals where plastic media delivers the greatest value.<\/p>\n\n\n<h3>Aerospace &amp; Defense<\/h3>\n\n<p>Depaint and recoat cycles are a critical maintenance requirement for military and commercial aircraft. Conventional chemical strippers are increasingly restricted due to environmental and health regulations (particularly those containing methylene chloride). Plastic blast media \u2014 specifically Type II and Type III \u2014 offers a compliant, effective, and substrate-safe alternative. MIL-P-85891A certification ensures traceability and consistency across DoD maintenance facilities. See our full breakdown: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-plastic-media-is-used-in-aerospace-depainting\/\">How Plastic Media Is Used in Aerospace Depainting<\/a>.<\/p>\n\n\n<h3>Automotive Refinishing &amp; Restoration<\/h3>\n\n<p>Classic car restorers and collision repair shops rely on plastic media blasting to strip factory paint, undercoating, and corrosion protection from steel and aluminum panels without causing metal distortion, heat warping, or the rough texture that aggressive abrasives leave behind. The process preserves panel gauge, eliminates the need for chemical baths, and produces a surface ideally prepared for primer adhesion. Detailed guidance: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-blasting-for-automotive-paint-stripping\/\">Plastic Media Blasting for Automotive Paint Stripping<\/a>.<\/p>\n\n\n<h3>Mold &amp; Tool Maintenance<\/h3>\n\n<p>Injection molds, die-casting tools, and rubber molds accumulate carbon deposits, release agent residue, and flash over production cycles. Plastic media blasting \u2014 particularly with fine-grade Type II or acrylic media \u2014 cleans mold cavities and parting surfaces without altering critical dimensions or polished surface finishes. The result is extended mold life and shorter cleaning downtime versus mechanical or chemical methods. Read: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-for-mold-cleaning-best-practices\/\">Plastic Media for Mold Cleaning: Best Practices<\/a>.<\/p>\n\n\n<h3>Electronics &amp; Plastics Deflashing<\/h3>\n\n<p>After injection molding of thermoplastic or thermoset electronic components, residual flash \u2014 thin fins of material at parting lines \u2014 must be removed without damaging the part geometry or conductor traces. Plastic media (typically Type V acrylic or fine Type II) in a cryogenic or ambient tumbling system achieves consistent, high-throughput deflashing on connector housings, IC packages, and precision plastic parts. More information: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/using-plastic-media-for-electronics-deflashing\/\">Using Plastic Media for Electronics Deflashing<\/a>.<\/p>\n\n\n<h3>General Metal Finishing &amp; Mass Finishing<\/h3>\n\n<p>In vibratory and centrifugal disc machines, polyester and other plastic tumbling media deliver deburring, edge radiusing, and pre-plate surface conditioning on aluminum, brass, zinc die-cast, and copper components at scale. Parts exit the tumbling process with consistent, reproducible surface textures measured in Ra microinches \u2014 eliminating hand-finishing variability. See: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-tumbling-media-for-aluminum-parts-finishing\/\">Plastic Tumbling Media for Aluminum Parts Finishing<\/a>.<\/p>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 5 \u2014 SELECTION 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\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<h2 id=\"pm-selection\">How to Choose the Right Type<\/h2>\n\n<p>Selecting the wrong plastic media type for your application can mean inadequate coating removal, substrate damage, excessive media consumption, or failed process qualification. Use the following six-step decision framework to narrow your selection:<\/p>\n\n<div class=\"pm-steps\">\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">1<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Define Your Substrate Material<\/h4>\n      <p>Aluminum alloy, composite\/CFRP, titanium, steel, or plastic? Softer substrates (aluminum, composites) require softer media (Type V or Type II). Harder substrates (titanium, steel) can tolerate Type III melamine.<\/p>\n    <\/div>\n  <\/div>\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">2<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Identify the Coating System<\/h4>\n      <p>Single-layer enamel vs. multi-coat epoxy primer + polyurethane topcoat? Heavier, harder coating systems benefit from coarser mesh grades or more aggressive Type III media. Light coatings may require only fine Type II.<\/p>\n    <\/div>\n  <\/div>\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">3<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Check Dimensional Tolerances<\/h4>\n      <p>Precision mold cavities and aerodynamic surfaces need the finest mesh grades (60\u201380) and softest type (V or I) to prevent any measurable material removal from the workpiece itself.<\/p>\n    <\/div>\n  <\/div>\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">4<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Consider Process Type<\/h4>\n      <p>Blast cabinet, portable blast, centrifugal wheel, vibratory bowl, or tumbling barrel? Blast applications use angular media (Types I\u2013III, V). Tumbling\/vibratory applications use shaped media (cones, triangles, wedges) in polyester or urea.<\/p>\n    <\/div>\n  <\/div>\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">5<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Set Pressure and Angle Parameters<\/h4>\n      <p>Plastic media typically operates at 20\u201360 PSI at 60\u201390\u00b0 impingement. Higher pressures accelerate media breakdown and can damage thin substrates. Always trial-blast on a coupon first. See: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/what-pressure-should-you-use-for-plastic-media-blasting\/\">What Pressure Should You Use for Plastic Media Blasting?<\/a><\/p>\n    <\/div>\n  <\/div>\n  <div class=\"pm-step\">\n    <div class=\"pm-step-num\">6<\/div>\n    <div class=\"pm-step-body\">\n      <h4>Evaluate Reuse &amp; Reclaim Requirements<\/h4>\n      <p>Multiple reuse cycles require a media reclaim and classification system to remove fines and paint debris. Factor this into your total cost of ownership calculation. Guidance: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-reuse-and-recycle-plastic-blast-media\/\">How to Reuse and Recycle Plastic Blast Media<\/a>.<\/p>\n    <\/div>\n  <\/div>\n<\/div>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 6 \u2014 VS ALTERNATIVES\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 -->\n<h2 id=\"pm-vs\">Plastic Media vs Alternatives<\/h2>\n\n<p>How does plastic media stack up against the most common competing abrasives? The table below provides a direct comparison across the dimensions that matter most in surface finishing decisions:<\/p>\n\n<div class=\"pm-table-wrap\">\n  <table>\n    <thead>\n      <tr>\n        <th>Abrasive<\/th>\n        <th>Hardness (Mohs)<\/th>\n        <th>Substrate Safety<\/th>\n        <th>Surface Profile<\/th>\n        <th>Health Risk<\/th>\n        <th>\u53ef\u56de\u6536\u6027<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Plastic Media (Urea)<\/td>\n        <td>3.5<\/td>\n        <td><span class=\"pm-badge pm-badge-high\">Excellent<\/span><\/td>\n        <td>Near-zero<\/td>\n        <td><span class=\"pm-badge pm-badge-high\">Very Low<\/span><\/td>\n        <td><span class=\"pm-badge pm-badge-high\">High<\/span><\/td>\n      <\/tr>\n      <tr>\n        <td>Walnut Shell<\/td>\n        <td>3.5<\/td>\n        <td><span class=\"pm-badge pm-badge-blue\">Good<\/span><\/td>\n        <td>Minimal<\/td>\n        <td><span class=\"pm-badge pm-badge-high\">Low<\/span><\/td>\n        <td><span class=\"pm-badge pm-badge-blue\">Medium<\/span><\/td>\n      <\/tr>\n      <tr>\n        <td>Glass Bead<\/td>\n        <td>5.5<\/td>\n        <td><span class=\"pm-badge pm-badge-med\">Moderate<\/span><\/td>\n        <td>Low\u2013medium<\/td>\n        <td><span class=\"pm-badge pm-badge-med\">Moderate<\/span><\/td>\n        <td><span class=\"pm-badge pm-badge-blue\">Medium<\/span><\/td>\n      <\/tr>\n      <tr>\n        <td>\u6c27\u5316\u94dd<\/td>\n        <td>9.0<\/td>\n        <td><span class=\"pm-badge pm-badge-low\">Poor<\/span><\/td>\n        <td>High<\/td>\n        <td><span class=\"pm-badge pm-badge-med\">Moderate<\/span><\/td>\n        <td><span class=\"pm-badge pm-badge-high\">High<\/span><\/td>\n      <\/tr>\n      <tr>\n        <td>\u7845\u7802<\/td>\n        <td>7.0<\/td>\n        <td><span class=\"pm-badge pm-badge-low\">Poor<\/span><\/td>\n        <td>High<\/td>\n        <td><span class=\"pm-badge pm-badge-low\">HIGH (Silicosis)<\/span><\/td>\n        <td><span class=\"pm-badge pm-badge-low\">\u65e0<\/span><\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n<\/div>\n\n<p>When substrate protection is the overriding concern, plastic media has no equal among conventional abrasives. For full head-to-head comparisons: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-vs-walnut-shell-which-is-better\/\">Plastic Media vs Walnut Shell: Which Is Better?<\/a> \u548c <a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-vs-glass-bead-pros-and-cons\/\">Plastic Media vs Glass Bead: Pros and Cons<\/a>.<\/p>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 7 \u2014 MIL-SPEC\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 -->\n<h2 id=\"pm-milspec\">MIL-SPEC Standards &amp; Compliance<\/h2>\n\n<p>MIL-P-85891A is the governing U.S. military specification for plastic media used in depaint operations on aircraft and military equipment. It defines five types of media (I through V) by resin chemistry, granule size grades, and performance requirements including bulk density, moisture content, pH, and breakdown rate.<\/p>\n\n<p>Compliance with MIL-P-85891A is mandatory for all plastic media blast operations at DoD maintenance facilities and for contractors performing work on defense platforms. Certified media must carry a Certificate of Conformance (CoC) tracing the material to specific lot numbers and test results. When specifying media for defense contracts, always verify MIL-SPEC compliance with your supplier \u2014 generic &#8220;plastic blast media&#8221; available from commodity distributors may not meet the standard.<\/p>\n\n<div class=\"pm-callout pm-callout-tip\">\n  <strong>Buyer Tip:<\/strong> Always request a Certificate of Conformance and batch test report from your supplier. MIL-P-85891A compliance cannot be assumed from product labeling alone \u2014 verify by lot number. For a full buyer&#8217;s guide: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/mil-spec-plastic-media-what-mil-p-85891a-means-for-buyers\/\">Mil-Spec Plastic Media: What MIL-P-85891A Means for Buyers<\/a>.\n<\/div>\n\n<p>Beyond the U.S. military standard, European aerospace programs reference similar requirements through NADCAP (National Aerospace and Defense Contractors Accreditation Program), which audits process controls around plastic media blasting as part of special process qualification. Understanding the full compliance landscape is critical for aerospace and defense supply chain participants. For procurement guidance: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-buy-plastic-blast-media-grades-packaging-pricing\/\">How to Buy Plastic Blast Media: Grades, Packaging &amp; Pricing<\/a> \u548c <a href=\"https:\/\/hlh-js.com\/resource\/blog\/best-plastic-media-suppliers-in-the-usa\/\">Best Plastic Media Suppliers in the USA<\/a>.<\/p>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 8 \u2014 FAQ (with FAQ Schema)\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 -->\n<h2 id=\"pm-faq\">Frequently Asked Questions<\/h2>\n\n<div class=\"pm-faq\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\">\n\n  <div class=\"pm-faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <p class=\"pm-faq-q\" itemprop=\"name\">Can plastic media be used on carbon fiber composite (CFRP)?<\/p>\n    <div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <p class=\"pm-faq-a\" itemprop=\"text\">Yes, but only with Type V acrylic or fine-grade Type II urea media, carefully controlled blast pressure (typically 20\u201335 PSI), and a perpendicular-to-fiber blast angle. Coarser or harder media types can cause inter-ply delamination or fiber breakout on CFRP surfaces.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"pm-faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <p class=\"pm-faq-q\" itemprop=\"name\">How many times can plastic blast media be reused?<\/p>\n    <div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <p class=\"pm-faq-a\" itemprop=\"text\">This varies by media type: polyester (Type I) offers the highest cycle count due to its resilience; melamine (Type III) 4\u20138 cycles; urea (Type II) 3\u20136 cycles; and acrylic (Type V) 2\u20134 cycles. A proper media reclaim system with air wash and screen separation is essential to maximize reuse.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"pm-faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <p class=\"pm-faq-q\" itemprop=\"name\">Does plastic media embed in aluminum surfaces?<\/p>\n    <div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <p class=\"pm-faq-a\" itemprop=\"text\">Unlike harder abrasives (steel grit, aluminum oxide), properly sized plastic media does not embed into aluminum under normal process parameters. Its hardness is lower than aluminum alloys commonly used in structures (7075-T6 Mohs ~3.5+), meaning particles fracture on impact rather than embedding into the workpiece.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"pm-faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <p class=\"pm-faq-q\" itemprop=\"name\">What is the difference between plastic blast media and plastic tumbling media?<\/p>\n    <div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <p class=\"pm-faq-a\" itemprop=\"text\">Blast media is angular, irregular in shape, and propelled at high velocity in a stream against a stationary workpiece. Tumbling\/vibratory media is precision-shaped (cones, wedges, triangles, cylinders) and works by cascading against parts in a rotating or vibrating chamber. Both can use similar resin chemistries but are optimized for different finishing processes and outcomes.<\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"pm-faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n    <p class=\"pm-faq-q\" itemprop=\"name\">Is plastic media blasting safe for health and the environment?<\/p>\n    <div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n      <p class=\"pm-faq-a\" itemprop=\"text\">Plastic media generates significantly lower dust levels than silica sand and contains no free crystalline silica, eliminating silicosis risk. Thermosetting resin dust does require respiratory protection per OSHA standards. On the environmental side, plastic media waste (broken particles + paint debris) must be characterized before disposal \u2014 stripped coating residues may be classified as hazardous waste depending on their content.<\/p>\n    <\/div>\n  <\/div>\n\n<\/div>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 9 \u2014 RELATED GUIDES (Internal Links)\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 -->\n<h2 id=\"pm-related\">Related Guides &amp; Resources<\/h2>\n\n<p>Explore our full content library on plastic media \u2014 organized by topic to help you find exactly what you need:<\/p>\n\n<div class=\"pm-cluster-group\">\n  <p class=\"pm-cluster-label\">\ud83d\udcd6 Types &amp; Selection<\/p>\n  <ul>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-blast-media-types-compared-urea-vs-melamine-vs-acrylic\/\">Plastic Blast Media Types Compared: Urea vs Melamine vs Acrylic<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/type-ii-urea-plastic-abrasive-when-and-why-to-use-it\/\">Type II Urea Plastic Abrasive: When and Why to Use It<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/acrylic-type-v-plastic-media-for-sensitive-surfaces\/\">Acrylic (Type V) Plastic Media for Sensitive Surfaces<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-tumbling-media-vs-blast-media-whats-the-difference\/\">Plastic Tumbling Media vs Blast Media: What&#8217;s the Difference?<\/a><\/li>\n  <\/ul>\n<\/div>\n\n<div class=\"pm-cluster-group\">\n  <p class=\"pm-cluster-label\">\ud83c\udfed Applications &amp; Industry Use Cases<\/p>\n  <ul>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-blasting-for-automotive-paint-stripping\/\">Plastic Media Blasting for Automotive Paint Stripping<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-plastic-media-is-used-in-aerospace-depainting\/\">How Plastic Media Is Used in Aerospace Depainting<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-for-mold-cleaning-best-practices\/\">Plastic Media for Mold Cleaning: Best Practices<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/using-plastic-media-for-electronics-deflashing\/\">Using Plastic Media for Electronics Deflashing<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-tumbling-media-for-aluminum-parts-finishing\/\">Plastic Tumbling Media for Aluminum Parts Finishing<\/a><\/li>\n  <\/ul>\n<\/div>\n\n<div class=\"pm-cluster-group\">\n  <p class=\"pm-cluster-label\">\ud83d\udd27 How-To &amp; Process Guides<\/p>\n  <ul>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-blasting-step-by-step-setup-guide\/\">Plastic Media Blasting: Step-by-Step Setup Guide<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-reuse-and-recycle-plastic-blast-media\/\">How to Reuse and Recycle Plastic Blast Media<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/what-pressure-should-you-use-for-plastic-media-blasting\/\">What Pressure Should You Use for Plastic Media Blasting?<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-vs-walnut-shell-which-is-better\/\">Plastic Media vs Walnut Shell: Which Is Better?<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/plastic-media-vs-glass-bead-pros-and-cons\/\">Plastic Media vs Glass Bead: Pros and Cons<\/a><\/li>\n  <\/ul>\n<\/div>\n\n<div class=\"pm-cluster-group\">\n  <p class=\"pm-cluster-label\">\ud83d\uded2 Procurement &amp; Compliance<\/p>\n  <ul>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-buy-plastic-blast-media-grades-packaging-pricing\/\">How to Buy Plastic Blast Media: Grades, Packaging &amp; Pricing<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/mil-spec-plastic-media-what-mil-p-85891a-means-for-buyers\/\">Mil-Spec Plastic Media: What MIL-P-85891A Means for Buyers<\/a><\/li>\n    <li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/best-plastic-media-suppliers-in-the-usa\/\">Best Plastic Media Suppliers in the USA<\/a><\/li>\n  <\/ul>\n<\/div>\n\n<hr class=\"pm-section-divider\">\n\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\n     SECTION 10 \u2014 DIFFERENTIATORS\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 -->\n<h2 id=\"pm-diff\">Tools &amp; Exclusive Resources<\/h2>\n\n<p>The following resources address gaps we identified in existing online content on plastic media \u2014 information, tools, and depth that most suppliers and distributors simply don&#8217;t provide:<\/p>\n\n<div class=\"pm-diff-grid\">\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">01<\/div>\n    <h4>Interactive Media Selector Tool<\/h4>\n    <p>Answer 5 questions about your substrate, coating, and application \u2014 get an instant, specific media type and mesh grade recommendation. No sales call required.<\/p>\n  <\/div>\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">02<\/div>\n    <h4>Downloadable Spec Comparison PDF<\/h4>\n    <p>A print-ready reference sheet comparing all MIL-P-85891A types by hardness, bulk density, mesh grades, and recommended applications. Ideal for engineering review.<\/p>\n  <\/div>\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">03<\/div>\n    <h4>Process Setup Video Library<\/h4>\n    <p>Watch real blast cabinet setups, media reclaim system operation, and vibratory bowl loading. See actual performance before committing to a media type.<\/p>\n  <\/div>\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">04<\/div>\n    <h4>TCO Calculator<\/h4>\n    <p>Input your annual blasting volume, media price, and reuse cycle count to calculate and compare total cost of ownership across types \u2014 including waste disposal costs.<\/p>\n  <\/div>\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">05<\/div>\n    <h4>MIL-P-85891A Plain-English Guide<\/h4>\n    <p>Our annotated plain-language summary translates the key requirements for engineers and procurement managers without a materials science background.<\/p>\n  <\/div>\n  <div class=\"pm-diff-card\">\n    <div class=\"pm-diff-num\">06<\/div>\n    <h4>Waste Characterization Checklist<\/h4>\n    <p>Used plastic blast media mixed with stripped paint debris may require hazardous waste characterization. Our RCRA-based checklist walks you through the process step by step.<\/p>\n  <\/div>\n<\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>What Is Plastic Media? The Complete Guide to Types, Uses  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12299,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-12297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/12297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/comments?post=12297"}],"version-history":[{"count":7,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/12297\/revisions"}],"predecessor-version":[{"id":12391,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/posts\/12297\/revisions\/12391"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/media\/12299"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/media?parent=12297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/categories?post=12297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/zh\/wp-json\/wp\/v2\/tags?post=12297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}