{"id":2973,"date":"2025-08-06T09:52:26","date_gmt":"2025-08-06T07:52:26","guid":{"rendered":"https:\/\/madtools.it\/?p=2973"},"modified":"2025-08-06T10:06:50","modified_gmt":"2025-08-06T08:06:50","slug":"pcd-vs-carbide-in-non-ferrous-machining","status":"publish","type":"post","link":"https:\/\/madtools.it\/en\/pcd-vs-carbide-in-non-ferrous-machining\/","title":{"rendered":"PCD vs Carbide in Non-Ferrous Machining"},"content":{"rendered":"\n<p><em>Tools wearing out every 200-500 parts, constant machine downtime, unsatisfactory surface finishes on aluminum and brass. If you recognize these problems, Polycrystalline Diamond (PCD) could be the breakthrough you&#8217;re looking for.<\/em><\/p>\n\n\n\n<p><strong>The Problem Everyone Knows<\/strong><\/p>\n\n\n\n<p>Machining high-silicon aluminum alloys, lead-free brass, or CFRP composites with traditional tools often means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Frequent tool changes<\/strong> (every 200-1000 parts)<\/li>\n\n\n\n<li><strong>Limited cutting speeds<\/strong> to preserve the tool<\/li>\n\n\n\n<li><strong>Surface roughness<\/strong> requiring rework<\/li>\n\n\n\n<li><strong>Hidden costs<\/strong> from machine downtime and labor<\/li>\n<\/ul>\n\n\n\n<p><strong>The Solution: PCD Tools<\/strong><\/p>\n\n\n\n<p><strong>Polycrystalline Diamond Compact<\/strong> combines diamond hardness (6000-7000 HV10) with the robustness of a tungsten carbide substrate.<\/p>\n\n\n\n<p><strong>The Game-Changing Numbers:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hardness:<\/strong> 4\u00d7 higher than carbide (6000 vs 1500 HV10)&nbsp;<\/li>\n\n\n\n<li><strong>Thermal conductivity:<\/strong> 8\u00d7 better (700 vs 90 W\/mK)&nbsp;<\/li>\n\n\n\n<li><strong>Friction on aluminum:<\/strong> 75% lower (0.05 vs 0.20)<\/li>\n<\/ul>\n\n\n\n<p><strong>Real Results on Critical Materials<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Material<\/strong><\/td><td><strong>Carbide Speed<\/strong><\/td><td><strong>PCD Speed<\/strong><\/td><td><strong>Tool Life<\/strong><\/td><td><strong>Roughness Ra<\/strong><\/td><\/tr><tr><td><strong>Al-Si 14%<\/strong><\/td><td>350-450 m\/min<\/td><td><strong>1800-2100 m\/min<\/strong><\/td><td><strong>\u00d710-25<\/strong><\/td><td>0.1-0.3 \u00b5m<\/td><\/tr><tr><td><strong>Brass CuZn21Si3P<\/strong><\/td><td>400-500 m\/min<\/td><td><strong>1200-1800 m\/min<\/strong><\/td><td><strong>\u00d715-20<\/strong><\/td><td>0.12-0.18 \u00b5m<\/td><\/tr><tr><td><strong>CFRP 60% fiber<\/strong><\/td><td>\u2014<\/td><td><strong>250-400 m\/min<\/strong><\/td><td><strong>\u00d78-12<\/strong><\/td><td>0.2 \u00b5m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><em>Sources: Kennametal 2022, Amaral et al. 2018, ZYsuperhard 2023<\/em><\/p>\n\n\n\n<p><strong>Optimal Operating Parameters<\/strong><\/p>\n\n\n\n<p><strong>Aluminum-Silicon Milling<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Speed:<\/strong> 1500-2000 m\/min<\/li>\n\n\n\n<li><strong>Feed:<\/strong> 0.10-0.15 mm\/tooth<\/li>\n\n\n\n<li><strong>Depth:<\/strong> \u2264 0.8 \u00d7 diameter<\/li>\n\n\n\n<li><strong>Notes:<\/strong> Lubricant optional<\/li>\n<\/ul>\n\n\n\n<p><strong>Lead-Free Brass Turning<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Speed:<\/strong> 1000-1400 m\/min<\/li>\n\n\n\n<li><strong>Feed:<\/strong> 0.15-0.25 mm\/tooth<\/li>\n\n\n\n<li><strong>Notes:<\/strong> Dry machining recommended<\/li>\n<\/ul>\n\n\n\n<p><strong>CFRP Drilling<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Speed:<\/strong> 250-350 m\/min<\/li>\n\n\n\n<li><strong>Feed:<\/strong> 0.08-0.12 mm\/tooth<\/li>\n\n\n\n<li><strong>Depth:<\/strong> \u2264 3 \u00d7 diameter<\/li>\n\n\n\n<li><strong>Notes:<\/strong> Exit backing plate mandatory<\/li>\n<\/ul>\n\n\n\n<p><strong>When NOT to Use PCD<\/strong><\/p>\n\n\n\n<p><strong>Watch these limitations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Never on steels<\/strong> (carbon-iron diffusion above 700\u00b0C)<\/li>\n\n\n\n<li><strong>Avoid interrupted cuts<\/strong> (reduced toughness: 3-5 MPa\u221am)<\/li>\n\n\n\n<li><strong>Low-rigidity machines<\/strong> won&#8217;t exploit high speeds<\/li>\n\n\n\n<li><strong>Very small diameters<\/strong> where maximum toughness is needed<\/li>\n\n\n\n<li><strong>Thermal shocks<\/strong> require gradual increase<\/li>\n<\/ul>\n\n\n\n<p><strong>FAQ &#8211; Frequently Asked Questions<\/strong><\/p>\n\n\n\n<p><strong>Q: Does PCD work on pure aluminum?<\/strong> A: Yes, but major benefits show on high-silicon alloys (&gt;8%) where carbide suffers more.<\/p>\n\n\n\n<p><strong>Q: Can I use the same parameters as carbide?<\/strong> A: No, PCD requires much higher speeds. Start gradually and increase to optimal parameters.<\/p>\n\n\n\n<p><strong>Q: How long does a PCD tool last?<\/strong> A: On Al-Si typically 10-25\u00d7 longer than carbide, but depends on specific application.<\/p>\n\n\n\n<p><strong>Conclusions<\/strong><\/p>\n\n\n\n<p>PCD isn&#8217;t the universal solution, but on <strong>high-silicon aluminum alloys, lead-free brass, and composites<\/strong> it offers decisive advantages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tripled speeds<\/strong>&nbsp;<\/li>\n\n\n\n<li><strong>Tool life 10-25\u00d7 higher<\/strong>&nbsp;<\/li>\n\n\n\n<li><strong>Excellent surface finishes<\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tools wearing out every 200-500 parts, constant machine downtime, unsatisfactory surface finishes on aluminum and brass. If you recognize these problems, Polycrystalline Diamond (PCD) could be the breakthrough you&#8217;re looking for. The Problem Everyone Knows Machining high-silicon aluminum alloys, lead-free brass, or CFRP composites with traditional tools often means: The Solution: PCD Tools Polycrystalline Diamond [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3009,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[45],"tags":[],"class_list":["post-2973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-categorizzato-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PCD vs Carbide in Non-Ferrous Machining - MadTools<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/madtools.it\/en\/pcd-vs-carbide-in-non-ferrous-machining\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PCD vs Carbide in Non-Ferrous Machining - MadTools\" \/>\n<meta property=\"og:description\" content=\"Tools wearing out every 200-500 parts, constant machine downtime, unsatisfactory surface finishes on aluminum and brass. 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