{"id":13672,"date":"2026-07-15T01:58:31","date_gmt":"2026-07-15T01:58:31","guid":{"rendered":"https:\/\/hlh-js.com\/?p=13672"},"modified":"2026-07-15T02:06:42","modified_gmt":"2026-07-15T02:06:42","slug":"abrasive-media-medical-device-blasting-glass-beads-aluminum-oxide-tio2-zirconia-comparison","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/ru\/resource\/\u0431\u043b\u043e\u0433\/abrasive-media-medical-device-blasting-glass-beads-aluminum-oxide-tio2-zirconia-comparison\/","title":{"rendered":"Abrasive Media for Medical Device Blasting: Glass Beads, Aluminum Oxide, TiO\u2082, Zirconia, and Plastic Media Compared"},"content":{"rendered":"<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@graph\": [\n        {\n            \"@type\": \"Article\",\n            \"headline\": \"Abrasive Media for Medical Device Blasting: Glass Beads, Aluminum Oxide, TiO\\u2082, Zirconia, and Plastic Media Compared\",\n            \"description\": \"Complete comparison of all abrasive blasting media qualified for medical device use \\u2014 glass beads, aluminum oxide, TiO\\u2082, zirconia, stainless steel shot, plastic media, and sodium bicarbonate. Includes a full properties table, selection decision matrix, and prohibited media list.\",\n            \"datePublished\": \"2026-07-13\",\n            \"dateModified\": \"2026-07-13\",\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                \"logo\": {\n                    \"@type\": \"ImageObject\",\n                    \"url\": \"https:\\\/\\\/hlh-js.com\\\/wp-content\\\/uploads\\\/hlh-logo.png\"\n                }\n            },\n            \"mainEntityOfPage\": {\n                \"@type\": \"WebPage\",\n                \"@id\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/abrasive-media-medical-device-blasting-glass-beads-aluminum-oxide-tio2-zirconia-comparison\\\/\"\n            }\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Which abrasive media is most widely used for medical device blasting?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Glass beads are the most widely used blasting media across medical device manufacturing overall, because they serve the broadest range of applications: surgical instrument matte finishing, device housing pre-anodize preparation, cardiovascular device housing treatment, and non-bone-contact implant surfaces. For implant-specific osseointegration roughening, aluminum oxide (Al\\u2082O\\u2083) is the most widely used, forming the basis of the SLA (sandblasted, large-grit, acid-etched) process for dental and orthopedic implants. TiO\\u2082 and ZrO\\u2082 are growing in use as alumina-free alternatives for titanium implants.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What is the difference between medical-grade and industrial-grade abrasive media?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Medical-grade abrasive media differs from industrial-grade in four key ways: chemical purity (medical grades are tested and certified free of heavy metal impurities \\u2014 lead, arsenic, cadmium, chromium VI \\u2014 at defined maximum limits); particle size distribution (medical grades have tighter, documented size distributions with certificates of conformance); documentation (each lot carries a certificate of analysis with batch number for traceability); and application-specific qualification (the media has been evaluated as part of the device manufacturer's ISO 13485 process validation, confirming it produces the required surface at defined parameters and that its residues can be completely removed by the qualified cleaning process).\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Is sodium bicarbonate blasting used in medical device manufacturing?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Yes, sodium bicarbonate (baking soda) blasting is used in medical device manufacturing for gentle cleaning and residue removal applications where conventional abrasive media would alter surface dimensions or induce substrate damage. Its primary medical applications are cleaning of precision implant components before passivation or coating (removing organic residues without dimensional change), gentle cleaning of reusable surgical instrument trays, and removal of surface scale or light contamination from titanium components where aggressive blasting could alter the surface profile. Sodium bicarbonate residue is water-soluble and completely removable by aqueous cleaning, which is a key advantage for cleanliness verification.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Can plastic blasting media be used on medical implants?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Plastic media (polyester, melamine, acrylic) is used on medical device components for gentle deburring and cleaning applications where metallic contamination must be avoided and dimensional tolerances are tight. In implant manufacturing, plastic media may be used for intermediate deburring of complex-geometry stent components or fine instrument features before electropolishing. Plastic media is not used to create the surface roughness needed for osseointegration \\u2014 it produces Ra values below 1 \\u03bcm and cannot achieve the 2\\u20134 \\u03bcm range required for bone ingrowth. All plastic media used in medical device blasting must be characterized for chemical composition and confirmed non-toxic per ISO 10993-compatible evaluation.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Why is silica sand prohibited in medical device blasting?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Silica sand (crystalline quartz) is categorically prohibited in medical device blasting for two independent reasons. First, respirable crystalline silica particles generated during blasting cause silicosis \\u2014 a progressive, irreversible, and potentially fatal lung disease \\u2014 in exposed workers. OSHA and international occupational health regulations severely restrict or prohibit silica sand as a blasting media in enclosed environments. Second, silicon particles that embed in medical device surfaces are a biocompatibility concern per ISO 10993 if devices contact the body, and silicon dioxide surface contamination can interfere with passivation, anodizing, and coating adhesion quality.\"\n                    }\n                }\n            ]\n        }\n    ]\n}<\/script> <style>\r\n.hlh-mcomp*,.hlh-mcomp*::before,.hlh-mcomp*::after{box-sizing:border-box;margin:0;padding:0}\r\n.hlh-mcomp{font-family:'Segoe UI',Arial,sans-serif;font-size:16px;line-height:1.78;color:#1e2a38;max-width:860px;margin:0 auto;padding:0 20px 64px}\r\n.hlh-mcomp h1{font-size:clamp(1.65rem,3.5vw,2.2rem);font-weight:800;color:#1a3456;line-height:1.22;margin-bottom:20px}\r\n.hlh-mcomp h2{font-size:clamp(1.18rem,2.5vw,1.46rem);font-weight:700;color:#1a3456;border-left:4px solid #d86e18;padding-left:14px;margin:50px 0 16px}\r\n.hlh-mcomp h3{font-size:1.05rem;font-weight:700;color:#1a3456;margin:28px 0 10px}\r\n.hlh-mcomp 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a{display:inline-block;background:#d86e18;color:#fff;font-weight:700;padding:13px 30px;border-radius:5px;font-size:.96rem;text-decoration:none}\r\n.hlh-mcomp-cta a:hover{background:#b85c12;text-decoration:none}\r\n@media(max-width:600px){.hlh-mcomp-hero,.hlh-mcomp-cta{padding:26px 18px}.hlh-mcomp-selector-row{grid-template-columns:1fr}}\r\n<\/style><\/p>\r\n<div class=\"hlh-mcomp\"><a class=\"hlh-mcomp-back\" href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-surface-treatment-medical-devices\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2190 Abrasive Blasting for Medical Devices: Complete Guide<\/a>\r\n<h1>Abrasive Media for Medical Device Blasting: Glass Beads, Aluminum Oxide, TiO\u2082, Zirconia, and Plastic Media Compared<\/h1>\r\n<div class=\"hlh-mcomp-hero\">\r\n<div class=\"hlh-mcomp-hero-tag\">In-Depth Guide \u00b7 Medical Device Series \u00b7 C11<\/div>\r\n<p>Selecting the right abrasive blasting media for a medical device application is not a matter of picking the cheapest option that achieves the target surface roughness. It is a regulated decision with biocompatibility, process validation, and supply chain documentation dimensions that do not exist in industrial blasting. This guide provides the complete comparison \u2014 properties, capabilities, limitations, qualification requirements, and selection logic \u2014 for every media type qualified for medical device use, alongside a clear account of which media are prohibited and why. Whether you are specifying a new implant blasting process, evaluating a switch from Al\u2082O\u2083 to TiO\u2082, or qualifying a new glass bead supplier, this guide provides the technical framework for the decision.<\/p>\r\n<\/div>\r\n<nav class=\"hlh-mcomp-toc\" aria-label=\"\u041e\u0433\u043b\u0430\u0432\u043b\u0435\u043d\u0438\u0435\">\r\n<div class=\"hlh-mcomp-toc-label\">Table of Contents<\/div>\r\n<ol>\r\n<li><a href=\"#mc-framework\">Qualification Framework: What Makes Media Suitable for Medical Use<\/a><\/li>\r\n<li><a href=\"#mc-master\">Master Comparison Table: All Qualified Media Types<\/a><\/li>\r\n<li><a href=\"#mc-glass\">Glass Beads: Properties, Grades, and Medical Qualification<\/a><\/li>\r\n<li><a href=\"#mc-alumina\">Aluminum Oxide: Manufacturing, Medical Grades, and Contamination<\/a><\/li>\r\n<li><a href=\"#mc-tio2\">TiO\u2082: Properties, Medical Use Cases, and Process Parameters<\/a><\/li>\r\n<li><a href=\"#mc-zirconia\">Zirconia: Types, Properties, and Applications<\/a><\/li>\r\n<li><a href=\"#mc-other\">Stainless Steel Shot, Plastic Media, and Sodium Bicarbonate<\/a><\/li>\r\n<li><a href=\"#mc-prohibited\">Prohibited Media and Reasons<\/a><\/li>\r\n<li><a href=\"#mc-selector\">Selection Decision Matrix<\/a><\/li>\r\n<li><a href=\"#mc-faq\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/a><\/li>\r\n<\/ol>\r\n<\/nav>\r\n<h2 id=\"mc-framework\">1. Qualification Framework: What Makes Media Suitable for Medical Use<\/h2>\r\n<p>Four requirements distinguish qualified medical-device blasting media from industrial abrasives, and all four must be met before a media type can be used in a validated medical device process:<\/p>\r\n<ul>\r\n<li><strong>Characterizable chemical composition:<\/strong> The chemical composition of the media must be fully characterized and documented, with maximum limits defined for potentially toxic or non-biocompatible elements (heavy metals, asbestiform fibers, crystalline silica). A certificate of analysis (CoA) with batch number must accompany each lot.<\/li>\r\n<li><strong>Documented particle size distribution:<\/strong> The particle size distribution must be measured and reported for each lot, with specification limits defined. Changes in particle size distribution alter the surface roughness produced at given process parameters, making PSD documentation essential for process control.<\/li>\r\n<li><strong>Removability by qualified cleaning process:<\/strong> Any media residue that cannot be completely removed from the device surface by the validated post-blast cleaning process disqualifies the media. The cleaning validation must demonstrate residue removal to below the defined cleanliness specification.<\/li>\r\n<li><strong>Biocompatibility of residues:<\/strong> Even if residues are below detection limits after cleaning, the media must be characterized such that ISO 10993 biocompatibility testing of the finished device (which is tested as manufactured, after all surface treatment) is not compromised by any remaining trace media contact.<\/li>\r\n<\/ul>\r\n<h2 id=\"mc-master\">2. Master Comparison Table: All Qualified Media Types<\/h2>\r\n<div class=\"hlh-mcomp-table-wrap\">\r\n<table class=\"hlh-mcomp-table\">\r\n<thead>\r\n<tr>\r\n<th>Media<\/th>\r\n<th>Mohs<\/th>\r\n<th>Morphology<\/th>\r\n<th>Typical Size<\/th>\r\n<th>Ra on Ti (3 bar)<\/th>\r\n<th>Al Contam.<\/th>\r\n<th>Cost vs Glass<\/th>\r\n<th>Key Medical Application<\/th>\r\n<th>Disqualifying Risk<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>\u0421\u0442\u0435\u043a\u043b\u044f\u043d\u043d\u044b\u0435 \u0431\u0443\u0441\u0438\u043d\u044b<\/td>\r\n<td>5.5\u20136<\/td>\r\n<td>Spherical<\/td>\r\n<td>50\u2013420 \u03bcm (#8\u2013#13)<\/td>\r\n<td>0.4\u20131.5 \u03bcm<\/td>\r\n<td>\u041d\u0435\u0442<\/td>\r\n<td>1\u00d7 (baseline)<\/td>\r\n<td>Instrument finish, housings, Ti cans<\/td>\r\n<td>Si residue (minor); fragmentation<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Aluminum Oxide (Al\u2082O\u2083)<\/td>\r\n<td>9<\/td>\r\n<td>Angular<\/td>\r\n<td>50\u20132000 \u03bcm<\/td>\r\n<td>1.5\u20135+ \u03bcm<\/td>\r\n<td>HIGH \u2014 embedded in Ti<\/td>\r\n<td>0.8\u20131.2\u00d7<\/td>\r\n<td>SLA implant roughening (dental\/ortho)<\/td>\r\n<td>Alumina embedding in Ti; ISO 10993 concern<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>TiO\u2082<\/td>\r\n<td>5.5\u20136.5<\/td>\r\n<td>Angular\u2013sub-angular<\/td>\r\n<td>150\u2013600 \u03bcm<\/td>\r\n<td>1.0\u20133.5 \u03bcm<\/td>\r\n<td>None (Ti-native)<\/td>\r\n<td>3\u20135\u00d7<\/td>\r\n<td>Alumina-free Ti implant blasting<\/td>\r\n<td>Higher cost; lower cut rate vs Al\u2082O\u2083<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Zirconia (ZrO\u2082)<\/td>\r\n<td>8\u20138.5<\/td>\r\n<td>Angular\u2013spherical<\/td>\r\n<td>100\u2013500 \u03bcm<\/td>\r\n<td>1.5\u20134.0 \u03bcm<\/td>\r\n<td>\u041d\u0435\u0442<\/td>\r\n<td>4\u20137\u00d7<\/td>\r\n<td>Zirconia implants; alumina-free Ti<\/td>\r\n<td>Fragmentation at high pressure; high cost<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>316L SS Shot<\/td>\r\n<td>6-7<\/td>\r\n<td>Spherical<\/td>\r\n<td>0.2\u20131.0 mm<\/td>\r\n<td>1.0\u20133.0 \u03bcm<\/td>\r\n<td>None (but Fe risk)<\/td>\r\n<td>1.5\u20132\u00d7<\/td>\r\n<td>SS instrument deburring<\/td>\r\n<td>Free iron contamination if carbon SS used; not for Ti\/Al<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Plastic (polyester\/melamine)<\/td>\r\n<td>3\u20134<\/td>\r\n<td>Angular\u2013irregular<\/td>\r\n<td>75\u2013300 \u03bcm<\/td>\r\n<td>0.2\u20130.8 \u03bcm<\/td>\r\n<td>\u041d\u0435\u0442<\/td>\r\n<td>2\u20133\u00d7<\/td>\r\n<td>Delicate components; stent deburr<\/td>\r\n<td>Cannot achieve implant-grade roughness; polymer residue risk<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>\u0411\u0438\u043a\u0430\u0440\u0431\u043e\u043d\u0430\u0442 \u043d\u0430\u0442\u0440\u0438\u044f<\/td>\r\n<td>2.5<\/td>\r\n<td>Crystalline, angular<\/td>\r\n<td>50\u2013300 \u03bcm<\/td>\r\n<td>0.1\u20130.4 \u03bcm<\/td>\r\n<td>\u041d\u0435\u0442<\/td>\r\n<td>0.5\u00d7<\/td>\r\n<td>Gentle cleaning; residue removal<\/td>\r\n<td>Very soft; no surface roughening capability; moisture sensitive<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<h2 id=\"mc-glass\">3. Glass Beads: Properties, Grades, and Medical Qualification<\/h2>\r\n<p>Glass beads for medical device blasting are produced from high-purity soda-lime silicate glass (SiO\u2082 68\u201375%, Na\u2082O 12\u201315%, CaO 8\u201312%) by air-atomization or flame-spheroidization of crushed glass. The spherical morphology is key: unlike angular abrasives that cut and erode the surface, glass beads create plastic deformation (peening) craters rather than cutting craters. The result is a smooth, curved micro-texture \u2014 the characteristic fine matte appearance of surgical instruments and medical equipment housings \u2014 as opposed to the sharp, angular micro-texture of aluminum oxide-blasted surfaces.<\/p>\r\n<p>Medical-grade glass beads are qualified per MIL-PRF-9954, which defines roundness requirements (\u2265 85% true spheres by count), hardness (Mohs 6, HV ~550), specific gravity (2.45\u20132.65 g\/cm\u00b3), and chemical composition limits. The composition specification for medical use adds freedom from lead and arsenic to the standard MIL requirements. Glass bead roundness degrades with use as beads fracture \u2014 broken fragments produce inconsistent cut and surface finish. The media change interval must be validated and enforced to maintain consistent Ra.<\/p>\r\n<h2 id=\"mc-alumina\">4. Aluminum Oxide: Manufacturing, Medical Grades, and Contamination<\/h2>\r\n<p>Medical-grade aluminum oxide (corundum, Al\u2082O\u2083 \u2265 99.5%) is produced by the Bayer process (refining bauxite ore to alumina) followed by fusion and crushing to produce angular particles, or by sol-gel or flame-fusion processes for higher-purity products. The high purity (\u2265 99.5% Al\u2082O\u2083) of medical-grade material distinguishes it from industrial abrasive alumina (typically 95\u201397% Al\u2082O\u2083 with SiO\u2082, Fe\u2082O\u2083, TiO\u2082 impurities). Impurities that would be acceptable in an industrial blasting application may be unacceptable in a medical device context if they create biocompatibility concerns or alter the surface chemistry detected by ISO 10993 testing.<\/p>\r\n<p>The alumina contamination issue \u2014 mechanical embedding of Al\u2082O\u2083 particles in titanium surfaces during blasting \u2014 has been extensively documented in the literature and is the primary quality and biocompatibility concern with Al\u2082O\u2083 media for titanium implant applications. For non-titanium applications (CoCr roughening, stainless steel preparation before coating), alumina embedding is not a concern because these substrates don&#8217;t have the same biocompatibility sensitivity and the embedded particles would be chemically inert in those contexts.<\/p>\r\n<h2 id=\"mc-tio2\">5. TiO\u2082: Properties, Medical Use Cases, and Process Parameters<\/h2>\r\n<p>Titanium dioxide blasting media is produced by synthesis rather than mining \u2014 typically by the chloride process (TiCl\u2084 oxidation) or sulfate process \u2014 producing high-purity (\u2265 99% TiO\u2082) rutile-phase particles with controlled size distribution. The resulting media is harder than glass beads (Mohs 5.5\u20136.5) but softer than aluminum oxide (Mohs 9), giving it an intermediate cut rate that can achieve the Ra values required for implant roughening at higher pressures than Al\u2082O\u2083 requires.<\/p>\r\n<p>The fundamental advantage of TiO\u2082 media for titanium implant blasting is chemical compatibility: TiO\u2082 particles embedded in the titanium surface are chemically identical to the native TiO\u2082 passive layer. There is no foreign material introduction, no alumina contamination signal detectable by XPS, and no biocompatibility concern from embedded residues. For device manufacturers who have performed ISO 10993 testing on TiO\u2082-blasted surfaces, this allows unambiguous attribution of all biological response to the titanium surface, without confounding alumina effects.<\/p>\r\n<div class=\"hlh-mcomp-callout\"><strong>Process re-validation required:<\/strong> Switching an existing Al\u2082O\u2083 blasting process to TiO\u2082 media is a process change under ISO 13485 that requires formal change control review and re-validation demonstrating equivalent Ra achievement within specification limits. The lower cut rate of TiO\u2082 means the validated Al\u2082O\u2083 parameter window (pressure, particle size, dwell time) cannot be simply transferred \u2014 the TiO\u2082 window must be independently characterized and validated. In most cases, pressure increases of 0.5\u20131.5 bar are needed to achieve equivalent Ra.<\/div>\r\n<h2 id=\"mc-zirconia\">6. Zirconia: Types, Properties, and Applications<\/h2>\r\n<p>Zirconia (ZrO\u2082) blasting media is available in two forms: monoclinic-phase (unstabilized) ZrO\u2082, which is used as a conventional angular abrasive, and yttria-stabilized tetragonal zirconia polycrystal (Y-TZP), which is used as a tougher, less friable abrasive with better resistance to fragmentation at higher pressures. Y-TZP is preferred for medical device blasting because its reduced fragmentation rate means more consistent particle size distribution over the media service life and less risk of fine fragment contamination of the blasted surface.<\/p>\r\n<p>Zirconia&#8217;s primary medical device applications are: titanium dental implant blasting as an alumina-free alternative (Ra 1.5\u20134.0 \u03bcm achievable at appropriate parameters), zirconia ceramic dental implant blasting (where zirconia media residues are chemically identical to the substrate), and orthopedic titanium implant blasting for manufacturers with alumina-free specifications. The higher hardness of ZrO\u2082 (Mohs 8\u20138.5) compared to TiO\u2082 (Mohs 5.5\u20136.5) means ZrO\u2082 achieves higher Ra at equivalent pressure \u2014 useful for orthopedic applications targeting Ra 3\u20135 \u03bcm.<\/p>\r\n<h2 id=\"mc-other\">7. Stainless Steel Shot, Plastic Media, and Sodium Bicarbonate<\/h2>\r\n<p><strong>Stainless steel shot (316L):<\/strong> Used for aggressive deburring of stainless steel surgical instrument bodies where glass beads lack sufficient impact energy. Must be composed of 304 or 316L stainless steel (not carbon steel) to prevent free iron contamination. Not suitable for titanium, aluminum, or CoCr components due to cross-contamination risk. After deburring, a final finish blast with glass beads (#10\u2013#13) removes shot-induced surface roughness to the matte finish specification.<\/p>\r\n<p><strong>Plastic media (polyester, melamine, acrylic):<\/strong> Used for gentle deburring and cleaning of delicate components where metallic contamination must be avoided \u2014 fine stent struts, thin-walled precision components, complex injection-molded polymer housings with metal inserts. Plastic media produces Ra values of 0.2\u20130.8 \u03bcm, well below implant roughening requirements but appropriate for cleaning and light deburring. All plastic media must be characterized for chemical composition; polymer particles that cannot be detected by the validated cleaning process are an unacceptable contamination risk.<\/p>\r\n<p><strong>Sodium bicarbonate:<\/strong> Used for gentle surface cleaning of implant components \u2014 removing organic residues, processing lubricants, and light surface contamination \u2014 without changing surface dimensions. Sodium bicarbonate has Mohs hardness of ~2.5, producing negligible material removal on metallic substrates. Its defining advantage for medical device use is water solubility: all residue is completely removed by aqueous cleaning, and residue removal is easily verified by conductivity measurement of the rinse water.<\/p>\r\n<h2 id=\"mc-prohibited\">8. Prohibited Media and Reasons<\/h2>\r\n<div class=\"hlh-mcomp-prohibited\"><strong>\u26a0 These media must never be used on medical device components:<\/strong>\r\n<ul>\r\n<li><strong>Silica sand (crystalline quartz):<\/strong> Occupational silicosis hazard (OSHA regulatory prohibition in enclosed spaces in many jurisdictions); silicon surface contamination affects biocompatibility; interference with passivation and anodizing.<\/li>\r\n<li><strong>Coal slag \/ copper slag \/ nickel slag:<\/strong> Undefined and variable heavy metal content (arsenic, lead, chromium, cadmium); cannot meet ISO 10993 biocompatibility requirements; not characterizable for purity.<\/li>\r\n<li><strong>Black Beauty (iron slag):<\/strong> High free iron content; Fe particles embed in stainless steel and titanium surfaces; corrosion in autoclave and body fluid environments.<\/li>\r\n<li><strong>Garnet (variable composition):<\/strong> Natural mineral with variable composition by source; may contain iron, manganese, heavy metal impurities; not reliably characterizable at purity levels required for medical use.<\/li>\r\n<li><strong>Steel grit (carbon steel):<\/strong> Free iron contamination in stainless and titanium surfaces; corrosion; not biocompatible.<\/li>\r\n<li><strong>Any media without full chemical composition documentation:<\/strong> Cannot be incorporated into ISO 13485-compliant process validation or ISO 10993 biocompatibility evaluation without complete, traceable chemical characterization.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<h2 id=\"mc-selector\">9. Selection Decision Matrix<\/h2>\r\n<div class=\"hlh-mcomp-selector\">\r\n<h3>Quick Selection Guide<\/h3>\r\n<div class=\"hlh-mcomp-selector-row\">Dental implant (Ti) \u2014 SLA roughening, Al OK<strong>\u2192 Al\u2082O\u2083 250\u2013500 \u03bcm at 2\u20134 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Dental implant (Ti) \u2014 alumina-free required<strong>\u2192 TiO\u2082 250\u2013500 \u03bcm at 3\u20135 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Zirconia dental implant<strong>\u2192 ZrO\u2082 100\u2013300 \u03bcm at 1\u20133 bar + HF etch<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Orthopedic Ti implant \u2014 bone ingrowth<strong>\u2192 Al\u2082O\u2083 or TiO\u2082 250\u2013750 \u03bcm at 3.5\u20136 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Stainless steel surgical instrument \u2014 matte finish<strong>\u2192 Glass beads #10\u2013#13 at 1.5\u20132.5 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Stainless steel instrument \u2014 heavy deburring<strong>\u2192 316L SS shot 0.3\u20130.6 mm, then finish with glass beads<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Aluminum housing \u2014 pre-anodize<strong>\u2192 Glass beads #10\u2013#12 at 1.5\u20132.5 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Titanium housing \/ pacemaker can<strong>\u2192 Glass beads #12\u2013#13 at 1.5\u20132.0 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Delicate stent deburring<strong>\u2192 Fine plastic media or glass beads #13 at 1\u20131.5 bar<\/strong><\/div>\r\n<div class=\"hlh-mcomp-selector-row\">Gentle cleaning, no dimensional change<strong>\u2192 Sodium bicarbonate 75\u2013200 \u03bcm at 1\u20132 bar<\/strong><\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-related\">\r\n<h3>Related Guides in This Series<\/h3>\r\n<a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-titanium-medical-implants-media-selection-alumina-contamination\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2192 Titanium Implants: Media Selection and Alumina Contamination Detail<\/a> <a href=\"https:\/\/hlh-js.com\/resource\/blog\/glass-bead-blasting-surgical-instruments-matte-finish-passivation\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2192 Glass Bead Blasting for Surgical Instruments<\/a> <a href=\"https:\/\/hlh-js.com\/resource\/blog\/iso-13485-abrasive-blasting-special-process-validation-medical-device\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2192 ISO 13485 Special Process Validation<\/a> <a href=\"https:\/\/hlh-js.com\/resource\/blog\/abrasive-blasting-surface-treatment-medical-devices\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2190 Complete Guide: Abrasive Blasting for Medical Devices<\/a><\/div>\r\n<h2 id=\"mc-faq\">10. Frequently Asked Questions<\/h2>\r\n<div>\r\n<div class=\"hlh-mcomp-faq-item\"><button class=\"hlh-mcomp-faq-btn\" aria-expanded=\"false\" aria-controls=\"mcq1\">Which abrasive media is most widely used for medical device blasting?<span class=\"hlh-mcomp-faq-icon\">+<\/span><\/button>\r\n<div id=\"mcq1\" class=\"hlh-mcomp-faq-answer\">\r\n<p>Glass beads are most widely used across all medical device categories \u2014 surgical instrument finishing, housing pre-anodize treatment, cardiovascular device housings. For implant-specific osseointegration roughening, aluminum oxide is most widely used, forming the basis of the SLA process. TiO\u2082 and ZrO\u2082 are growing as alumina-free alternatives for titanium implant manufacturing.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-faq-item\"><button class=\"hlh-mcomp-faq-btn\" aria-expanded=\"false\" aria-controls=\"mcq2\">What is the difference between medical-grade and industrial-grade abrasive media?<span class=\"hlh-mcomp-faq-icon\">+<\/span><\/button>\r\n<div id=\"mcq2\" class=\"hlh-mcomp-faq-answer\">\r\n<p>Medical-grade media differs in four ways: chemical purity (documented, certified free of heavy metal impurities); particle size distribution (tighter, lot-certified); traceability (CoA with batch number for supplier qualification and process records); and application qualification (part of a validated ISO 13485 process with demonstrated residue removability per the qualified cleaning process).<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-faq-item\"><button class=\"hlh-mcomp-faq-btn\" aria-expanded=\"false\" aria-controls=\"mcq3\">Is sodium bicarbonate blasting used in medical device manufacturing?<span class=\"hlh-mcomp-faq-icon\">+<\/span><\/button>\r\n<div id=\"mcq3\" class=\"hlh-mcomp-faq-answer\">\r\n<p>Yes, for gentle cleaning and residue removal \u2014 not surface roughening. NaHCO\u2083 (Mohs ~2.5) produces Ra 0.1\u20130.4 \u03bcm on metal substrates with negligible material removal. Its key advantage: complete water solubility means all residue is removed by aqueous cleaning and verified by rinse conductivity measurement. Used on precision implant components before passivation or coating to remove organic residues without dimensional change.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-faq-item\"><button class=\"hlh-mcomp-faq-btn\" aria-expanded=\"false\" aria-controls=\"mcq4\">Can plastic blasting media be used on medical implants?<span class=\"hlh-mcomp-faq-icon\">+<\/span><\/button>\r\n<div id=\"mcq4\" class=\"hlh-mcomp-faq-answer\">\r\n<p>Plastic media (polyester, melamine) is used for gentle intermediate deburring of delicate components \u2014 complex-geometry stent struts, fine instrument features \u2014 where metallic contamination must be avoided. It cannot achieve the Ra 2\u20134 \u03bcm required for osseointegration; it produces Ra 0.2\u20130.8 \u03bcm. All plastic media must be chemically characterized and confirmed compatible with ISO 10993 biocompatibility evaluation. Polymer residue removability must be validated.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-faq-item\"><button class=\"hlh-mcomp-faq-btn\" aria-expanded=\"false\" aria-controls=\"mcq5\">Why is silica sand prohibited in medical device blasting?<span class=\"hlh-mcomp-faq-icon\">+<\/span><\/button>\r\n<div id=\"mcq5\" class=\"hlh-mcomp-faq-answer\">\r\n<p>Silica sand is prohibited for two independent reasons: it causes silicosis (an irreversible, potentially fatal lung disease) in workers exposed to crystalline silica dust \u2014 a serious occupational health violation in enclosed blasting environments; and silicon particles embedded in or remaining on device surfaces create biocompatibility concerns per ISO 10993 and can interfere with passivation, anodizing, and coating adhesion. No medical device application justifies its use when safe alternatives are available.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"hlh-mcomp-cta\">\r\n<h2>Source the Right Medical-Grade Blasting Media for Your Application<\/h2>\r\n<p>Jiangsu Henglihong Technology supplies glass beads, aluminum oxide, and specialty abrasive media with full medical-grade documentation \u2014 composition certificates, particle size distribution data, and lot traceability for ISO 13485 process validation.<\/p>\r\n<a href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\">Request Media Comparison Data &amp; Quote<\/a><\/div>\r\n<\/div>\r\n<p><script>(function(){var b=document.querySelectorAll('.hlh-mcomp-faq-btn');b.forEach(function(btn){btn.addEventListener('click',function(){var e=this.getAttribute('aria-expanded')==='true',a=document.getElementById(this.getAttribute('aria-controls'));b.forEach(function(x){x.setAttribute('aria-expanded','false');var y=document.getElementById(x.getAttribute('aria-controls'));if(y)y.style.maxHeight='0'});if(!e){this.setAttribute('aria-expanded','true');a.style.maxHeight=a.scrollHeight+'px'}})})})();<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>\u2190 Abrasive Blasting for Medical Devices: Complete Guide Abrasive Media  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":13674,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-13672","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/13672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/comments?post=13672"}],"version-history":[{"count":3,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/13672\/revisions"}],"predecessor-version":[{"id":13690,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/posts\/13672\/revisions\/13690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/media\/13674"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/media?parent=13672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/categories?post=13672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/ru\/wp-json\/wp\/v2\/tags?post=13672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}