{"product_id":"fm200070","title":"CNMG 120408  Chip Breaker BL Grade FM324 \/ CNMG 432 BL #FMCarbide","description":"\u003cp\u003e\u003cstrong\u003eCNMG 120408 \/ CNMG 432, chip breaker BL, grade FM324 — negative 80° rhombic turning insert.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e1\/2\" inscribed circle, 3\/16\" thick, 1\/32\" corner radius. The BL breaker is the semi-finishing geometry: 0.004–0.012 ipr (0.1–0.3 mm\/rev) at 0.04–0.12\" (1–3 mm) depth of cut. FM324 is a PVD grade — universal multi-purpose grade for mid and low cutting speeds — low-carbon and alloyed steel, stainless, cast iron, Inconel and titanium alloys.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert designation (ISO):\u003c\/strong\u003e CNMG 120408\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert designation (inch):\u003c\/strong\u003e CNMG 432\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert shape:\u003c\/strong\u003e 80° rhombic (C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance angle:\u003c\/strong\u003e 0° — negative (N)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance class:\u003c\/strong\u003e M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert type:\u003c\/strong\u003e G — with hole, chipbreaker both sides\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed circle (I.C.):\u003c\/strong\u003e 1\/2\" (12.7 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 3\/16\" (4.76 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner radius:\u003c\/strong\u003e 1\/32\" (0.79 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip breaker:\u003c\/strong\u003e BL — Steel — semi-finishing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeed rate range:\u003c\/strong\u003e 0.004–0.012 ipr (0.1–0.3 mm\/rev)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth of cut range:\u003c\/strong\u003e 0.04–0.12\" (1–3 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e FM324\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO application range:\u003c\/strong\u003e P10–P30 · M05–M25 · S05–S25 · H20–H40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, non-alloy steel:\u003c\/strong\u003e 390–820 SFM (120–250 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, low-alloy steel:\u003c\/strong\u003e 230–750 SFM (70–230 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, high-alloy steel:\u003c\/strong\u003e 230–590 SFM (70–180 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, ferritic \u0026amp; martensitic stainless:\u003c\/strong\u003e 200–590 SFM (60–180 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, austenitic stainless:\u003c\/strong\u003e 200–490 SFM (60–150 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, grey cast iron:\u003c\/strong\u003e 200–520 SFM (60–160 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, nodular cast iron:\u003c\/strong\u003e 200–390 SFM (60–120 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, titanium \u0026amp; super-alloys:\u003c\/strong\u003e 110–200 SFM (35–60 m\/min)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting speed, hardened material:\u003c\/strong\u003e 130–260 SFM (40–80 m\/min)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTool holders that accept this insert\u003c\/h3\u003e\u003cp\u003e69 RMC toolholders in stock take this insert — 80° rhombic, 0° — negative clearance, 1\/2\" inscribed circle, 3\/16\" thick. Pick by the shank your turret takes.\u003c\/p\u003e\u003ch4\u003eRMC square-shank toolholders — made in the USA\u003c\/h4\u003e\u003ctable style=\"width:100%;border-collapse:collapse\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e5\/8\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mcgnl-10-4b\"\u003eMCGNL 10-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-10-4b\"\u003eMCGNR 10-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-10-4b\"\u003eMCLNL 10-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-10-4b\"\u003eMCLNR 10-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-10-4b\"\u003eMCYNN 10-4B\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e3\/4\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mcfnl-12-4b\"\u003eMCFNL 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcfnr-12-4b\"\u003eMCFNR 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnl-12-4b\"\u003eMCGNL 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-12-4b\"\u003eMCGNR 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcknl-12-4b\"\u003eMCKNL 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcknr-12-4b\"\u003eMCKNR 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-12-4b\"\u003eMCLNL 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-12-4b\"\u003eMCLNR 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-12-4c\"\u003eMCLNR 12-4C\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-12-4b\"\u003eMCMNN 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnl-12-4b\"\u003eMCRNL 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-12-4b\"\u003eMCRNR 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-12-4b\"\u003eMCYNN 12-4B\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-12-4d\"\u003eMCYNN 12-4D\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e1\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mcfnl-16-4d\"\u003eMCFNL 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcfnr-16-4d\"\u003eMCFNR 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnl-16-4d\"\u003eMCGNL 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-16-4d\"\u003eMCGNR 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcknl-16-4d\"\u003eMCKNL 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcknr-16-4d\"\u003eMCKNR 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-16-4c\"\u003eMCLNL 16-4C\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-16-4d\"\u003eMCLNL 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-16-4c\"\u003eMCLNR 16-4C\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-16-4d\"\u003eMCLNR 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-16-4d\"\u003eMCMNN 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnl-16-4d\"\u003eMCRNL 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-16-4c\"\u003eMCRNR 16-4C\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-16-4d\"\u003eMCRNR 16-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-16-4d\"\u003eMCYNN 16-4D\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e1-1\/4\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mcfnr-20-4e\"\u003eMCFNR 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnl-20-4d\"\u003eMCGNL 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-20-4d\"\u003eMCGNR 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-20-4e\"\u003eMCGNR 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcknl-20-4d\"\u003eMCKNL 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcknr-20-4d\"\u003eMCKNR 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-20-4d\"\u003eMCLNL 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-20-4e\"\u003eMCLNL 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-20-4d\"\u003eMCLNR 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-20-4e\"\u003eMCLNR 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-20-4d\"\u003eMCMNN 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-20-4e\"\u003eMCMNN 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnl-20-4d\"\u003eMCRNL 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-20-4d\"\u003eMCRNR 20-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-20-4e\"\u003eMCRNR 20-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-20-4d\"\u003eMCYNN 20-4D\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e1-1\/2\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mclnl-24-4d\"\u003eMCLNL 24-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-24-4e\"\u003eMCLNL 24-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-24-4d\"\u003eMCLNR 24-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-24-4e\"\u003eMCLNR 24-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-24-4e\"\u003eMCMNN 24-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnl-24-4e\"\u003eMCRNL 24-4E\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-24-4e\"\u003eMCRNR 24-4E\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"vertical-align:top;white-space:nowrap;padding:8px 14px 8px 0;border-bottom:1px solid #e1e3e3\"\u003e\u003cstrong\u003e1\" x 1-1\/4\" shank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 0;border-bottom:1px solid #e1e3e3\"\u003e\n\u003ca href=\"\/products\/mcfnl-85-4d\"\u003eMCFNL 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcfnr-85-4d\"\u003eMCFNR 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnl-85-4d\"\u003eMCGNL 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcgnr-85-4d\"\u003eMCGNR 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcknl-85-4d\"\u003eMCKNL 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcknr-85-4d\"\u003eMCKNR 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnl-85-4d\"\u003eMCLNL 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mclnr-85-4d\"\u003eMCLNR 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcmnn-85-4d\"\u003eMCMNN 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnl-85-4d\"\u003eMCRNL 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcrnr-85-4d\"\u003eMCRNR 85-4D\u003c\/a\u003e · \u003ca href=\"\/products\/mcynn-85-4d\"\u003eMCYNN 85-4D\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eBoring bars and interchangeable heads.\u003c\/strong\u003e 66 more RMC tools take the same insert for internal turning. \u003ca href=\"\/collections\/rmc-boring-bars\"\u003eSee RMC boring bars →\u003c\/a\u003e\u003c\/p\u003e\u003csection id=\"fm-techtips\" class=\"fm-techtips\" aria-labelledby=\"fm-techtips-title\"\u003e\n  \u003cheader class=\"fm-techtips-header\"\u003e\n    \u003cdiv class=\"fm-techtips-logo\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0283\/9796\/1325\/files\/TechTips_logo-01_V3.png?v=1637768030\" alt=\"TechTips\" width=\"5440\" height=\"2144\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003cp class=\"fm-techtips-eyebrow\"\u003eTURNING KNOW-HOW\u003c\/p\u003e\n      \u003ch2 id=\"fm-techtips-title\"\u003eGet more from your turning inserts.\u003c\/h2\u003e\n      \u003cp class=\"fm-techtips-intro\"\u003ePractical guides to choosing, understanding and using your inserts.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/header\u003e\n  \u003cdiv class=\"fm-techtips-grid\"\u003e\n    \u003ca class=\"fm-techtips-card\" href=\"https:\/\/fmcarbide.com\/pages\/fm-carbide-grades-chip-breakers\"\u003e\n      \u003cspan class=\"fm-techtips-topic\"\u003e01 \/ SELECTION\u003c\/span\u003e\n      \u003ch4\u003eGrades \u0026amp; chip breakers\u003c\/h4\u003e\n      \u003cp\u003eExplore the grade and chip-breaker selection chart for your turning operation.\u003c\/p\u003e\n      \u003cspan class=\"fm-techtips-cta\"\u003eExplore the chart \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\n    \u003c\/a\u003e\n    \u003ca class=\"fm-techtips-card\" href=\"https:\/\/fmcarbide.com\/blogs\/techtalks\/turning-insert-designation-explained\"\u003e\n      \u003cspan class=\"fm-techtips-topic\"\u003e02 \/ INSERT CODES\u003c\/span\u003e\n      \u003ch4\u003eKnow your insert\u003c\/h4\u003e\n      \u003cp\u003eUnderstand turning-insert designations and what the letters and numbers mean.\u003c\/p\u003e\n      \u003cspan class=\"fm-techtips-cta\"\u003eRead the guide \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\n    \u003c\/a\u003e\n    \u003ca class=\"fm-techtips-card\" href=\"https:\/\/fmcarbide.com\/blogs\/techtalks\/using-a-turning-formula-calculator\"\u003e\n      \u003cspan class=\"fm-techtips-topic\"\u003e03 \/ CUTTING PARAMETERS\u003c\/span\u003e\n      \u003ch4\u003eTurning calculations\u003c\/h4\u003e\n      \u003cp\u003eLearn how to use a turning formula calculator to work through the numbers.\u003c\/p\u003e\n      \u003cspan class=\"fm-techtips-cta\"\u003eExplore the formulas \u003cspan aria-hidden=\"true\"\u003e→\u003c\/span\u003e\u003c\/span\u003e\n    \u003c\/a\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e","brand":"FM Carbide","offers":[{"title":"FM324 \/ BL \/ FM200070","offer_id":42931832127729,"sku":"FM200070","price":7.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/9796\/1325\/products\/CNMG_120408_BC_ISO_FM_Carbide_Insert_69b9b85c-b7dd-4381-b546-75d86ae18db0.jpg?v=1655301108","url":"https:\/\/fmcarbide.com\/products\/fm200070","provider":"FM Carbide","version":"1.0","type":"link"}