{"product_id":"walter-8115644-cnmg432-mp3-turning-insert-carbide","title":"Walter 8115644 CNMG432-MP3 Turning Insert Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WALTER 8115644 is a CNMG432-MP3 WPP20G grade indexable turning insert manufactured from solid carbide with a multilayer CVD coating of TiCN, Al2O3, and TiN. The 80-degree diamond insert shape provides a strong cutting geometry suited to moderate to heavy material removal. With a 0.5 inch inscribed circle, a 0.031 inch corner radius, and an insert length of 0.508 inches, it is sized for standard CNMG toolholders. The negative rake angle and chamfered-and-honed cutting edge style improve edge strength during interrupted or continuous cuts. Licensed CNC machinists and tool-and-die technicians are the primary installers of this insert in production turning centers.\u003c\/p\u003e\u003cp\u003eThis insert is designed for turning, facing, and boring operations across a range of part geometries. Its primary workpiece material target is steel (ISO material code P, grade P20), with secondary application in cast iron (ISO material code K, grade K30). The MP3 chip breaker geometry is configured for medium-range cutting parameters on these materials. The insert carries both ANSI and ISO standards compliance, with an ISO designation of CNMG120408-MP3 WPP20G and an industry standard number of CNMG432-MP3 WPP20G, making it straightforward to cross-reference in standard tooling catalogs.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMultilayer CVD coating (TiCN, Al2O3, TiN) for thermal resistance and wear life on steel and cast iron\u003c\/li\u003e\n\u003cli\u003e80-degree diamond insert shape with negative rake angle for strong, reliable cutting edge\u003c\/li\u003e\n\u003cli\u003eMP3 chip breaker optimized for turning, facing, and boring applications\u003c\/li\u003e\n\u003cli\u003e4 usable cutting edges per insert for cost-effective indexing\u003c\/li\u003e\n\u003cli\u003eChamfered and honed cutting edge style for improved edge toughness\u003c\/li\u003e\n\u003cli\u003eANSI and ISO standards compliant with dual designation (CNMG432 and CNMG120408)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard CNMG-style toolholders that accept clamp and pin insert holding methods. Compatible with turning, facing, and boring operations targeting steel (P20) and cast iron (K30) workpiece materials. Verify toolholder seat and clamp configuration against CNMG432 insert geometry before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified CNC machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and clamp hardware specified by the toolholder manufacturer  -  do not substitute clamping components. Inspect the toolholder seat for chips or damage before seating a new insert, as debris under the insert can fracture carbide during operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: CNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG120408-MP3 WPP20G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: CNMG432-MP3 WPP20G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: WPP20G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: P20, K30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN, Al2O3, TiN (Multilayer CVD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond 80 (80-degree included angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape Code\u003c\/strong\u003e: C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: MP3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Chamfered and Honed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 22.5 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.508 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0315 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.203 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.508 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 432\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp, Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Cast Iron (K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Turning, Facing, Boring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiper Edge\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: WALTER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8115644\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":52002261729586,"sku":"8115644","price":301.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7febde50e879cff2d6f1a22122ba2a26.jpg?v=1789997891","url":"https:\/\/voomisupply.com\/products\/walter-8115644-cnmg432-mp3-turning-insert-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}