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CBN-6 Boron Nitride Turning Insert with MTJNR1616H16 External Turning Lathe Cutting Tool Holder,High Speed Finishing of Heat Treated Steel,Sintered Ferrous Alloy and Cast Iron\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003ePremium CBN Turning Inserts \u0026amp; CNC Tool Holder Set:Includes 1PC TNMG160404 CBN-6 + 1PC TNMG160408 CBN-6 Boron Nitride Inserts with MTJNR1616H16 Holder for hardened steel machining.\u003c\/li\u003e\n \u003cli\u003eShock-Resistant CBN for Interrupted Cuts:Withstands heavy impact in hardened steels (\u0026gt;50HRC) and cast iron, 3X fracture toughness vs. ceramics (9.0 MPam1\/2).\u003c\/li\u003e\n \u003cli\u003eMirror Finish on Hardened Steels:Low iron affinity achieves Ra0.4m surface on quenched\/tool\/bearing steels (50-70HRC), eliminating grinding operations.\u003c\/li\u003e\n \u003cli\u003eHigh-Speed Continuous Machining:Stable at 350m\/min on spring steel, ductile iron, and carburized steel with minimal flank wear.\u003c\/li\u003e\n \u003cli\u003eMTJNR1616H16 Tool Holder Compatibility:Securely clamps TNMG1604XX inserts for vibration-free external turning on CNC lathes.\u003c\/li\u003e\n \u003c\/ul\u003e"}