{"product_id":"sandvik-coromant-7860823-turning-insert-scmt431-pm-4425","title":"Sandvik Coromant 7860823 Turning Insert SCMT431-PM 4425","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 7860823 is a square-shaped indexable turning insert in the CoroTurn 107 series, designated SCMT431-PM 4425. It is manufactured from solid carbide and coated via CVD with a multilayer TiCN, Al2O3, and TiN stack, grade 4425. This coating combination targets steel and cast iron machining, providing wear resistance and thermal protection during continuous and interrupted turning operations. The insert carries a neutral hand orientation and features a PM chip breaker geometry. With four cutting edges per insert, it offers strong value in high-volume production turning environments. Licensed machinists and CNC operators install this insert in compatible CoroTurn 107 toolholders.\u003c\/p\u003e\u003cp\u003eThis insert is suited for external and internal turning applications on steel (ISO material code P) and cast iron (ISO material code K) workpieces. The PM chip breaker geometry is designed for medium roughing to finishing cuts in these material groups. It is commonly used in production turning on CNC lathes in both job shops and high-volume manufacturing cells. The ISO designation for this insert is SCMT 12 04 04-PM 4425, and the manufacturer catalog number is SCMT 431-PM 4425.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life in steel and cast iron\u003c\/li\u003e\n\u003cli\u003eGrade 4425 carbide substrate engineered for ISO P and K workpiece materials\u003c\/li\u003e\n\u003cli\u003eSquare insert shape (code S) with 7-degree relief angle and tolerance code M\u003c\/li\u003e\n\u003cli\u003eFour usable cutting edges per insert for reduced tooling cost per part\u003c\/li\u003e\n\u003cli\u003ePM chip breaker geometry optimized for medium roughing to finishing pass ranges\u003c\/li\u003e\n\u003cli\u003eCompatible with both clamp and screw insert holding methods\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement insert for CoroTurn 107 series toolholders accepting SCMT style inserts with a 0.5 inch inscribed circle and screw or clamp retention. ISO code SCMT 12 04 04-PM 4425 confirms holder pocket compatibility.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC tooling technicians following standard indexable insert seating procedures. The machine spindle must be stopped and the turret fully indexed to a safe position before changing inserts. Use the appropriate torx or hex key to torque the clamp or screw to the toolholder manufacturer specification. Inspect the insert pocket seating surface for chips or debris before seating each new cutting edge to ensure proper contact and runout control.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: SCMT 12 04 04-PM 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: SCMT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 4425\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: CVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0156 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches (4.76 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.2165 inches (5.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (ISO K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 x 1.54 x 0.43 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SANDVIK COROMANT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7860823\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51751093567794,"sku":"7860823","price":347.58,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b2cfa1550100549643681de2443677eb_cee3a9c7-5ad6-4988-b2f1-109c43fe9b67.jpg?v=1788921621","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-7860823-turning-insert-scmt431-pm-4425","provider":"Voomi Supply","version":"1.0","type":"link"}