PRAMET WNMG080408E-M T9315 CVD Coated Carbide Turning Insert with E-M Chipbreaker and R0.8 Corner Radius for CNC Turning

The WNMG080408E-M T9315 is premium CVD coated cemented carbide turning insert manufactured for general-purpose outer diameter and inner bore rough & semi-finish CNC turning. Featuring 80° hexagonal negative WNMG geometry, customized E-M chipbreaker profile and proprietary T9315 dedicated carbide substrate, the insert possesses outstanding abrasion resistance and moderate impact toughness to sustain stable cutting performance under continuous and mild interrupted turning operations for various steel components.

Optimized E-M formed chip groove enables orderly chip curling and smooth chip evacuation, guaranteeing consistent dimensional precision and extended service life for mass batch production on standard CNC lathes and automatic turning equipment.

• T9315 fine-grain tungsten carbide base with multi-layer CVD coating delivers excellent high-temperature wear resistance and thermal stability, perfectly suitable for long-time continuous cutting of carbon steel and alloy structural steel.
• Exclusive E-M chipbreaker structure realizes reliable chip control to prevent tangled chips scratching finished workpiece surfaces.
• Standard WNMG0804 insert dimension with reasonable clearance angle, easy positioning and stable clamping with matched WNMG series tool holders.
• Precision ground cutting edge provides superior machined surface finish and effectively reduces post-processing burr formation.
• Reinforced cutting edge restrains built-up edge adhesion during prolonged continuous production and significantly prolongs insert service lifespan.

• Carbon steel
• Alloy structural steel
• Pre-hardened structural steel
• Cast steel
• Low-alloy forged steel

• Outer diameter rough and semi-finish turning
• CNC lathe inner bore boring machining
• Light interrupted contour turning processing
• General mechanical parts batch turning
• Universal conventional CNC turning

Combining reliable T9315 CVD coated carbide substrate and practical E-M chipbreaker design, the WNMG080408E-M maintains steady cutting stability and uniform dimensional accuracy during steel turning. Its balanced wear and impact performance reduces frequent tool replacement cost and improves overall workshop production efficiency, acting as an economical universal insert for mass semi-finish and rough steel machining.