PVD Coated GM3225 Grade Carbide Turning Insert with MM Chipbreaker for CNC Turning

The CCMT09T308MM GM3225 is premium multilayer PVD-coated carbide negative turning insert manufactured by TC for general CNC inner bore and outer diameter turning operations. Designed with CCMT rhombic 80° geometry, MM tailored chipbreaker groove and TC exclusive fine-grain GM3225 carbide grade, this insert delivers outstanding toughness and anti-abrasion performance to maintain stable cutting effect during continuous and interrupted rough & semi-finish turning.

Optimized MM chipbreaker structure realizes orderly chip curling and smooth chip removal, securing stable dimensional accuracy and extended service life for mass production machining on standard CNC lathes and automated turning equipment.

• GM3225 fine-grain tungsten carbide substrate with multilayer PVD coating balances superior toughness and wear resistance, adaptable to high-temperature cutting of stainless steel and alloyed steel components.
• Specially optimized MM forming chipbreaker ensures reliable chip control, avoids long tangled chips scratching finished workpiece surface.
• Standard CCMT09T3 insert dimensional specification with rational clearance angle, convenient clamping and compatible with matching CCMT series tool holders.
• Precision ground cutting edge brings excellent workpiece surface finish and reduces secondary deburring workload after processing.
• Strengthened cutting edge restrains built-up edge generation during long-hour continuous cutting and effectively prolongs insert service lifespan.

• Carbon steel
• Alloy steel
• Austenitic stainless steel
• Heat-resistant superalloy
• Pre-hardened structural steel

• Outer diameter rough & semi-finish turning
• CNC lathe inner hole boring machining
• Interrupted contour turning processing
• Batch general mechanical component turning
• Multi-spec mixed production conventional turning

Combining TC mature GM3225 coated carbide base and practical MM chipbreaker design, the CCMT09T308MM maintains consistent cutting stability and reliable dimensional precision for steel and stainless steel turning. Its balanced wear resistance and impact toughness lower frequent tool replacement cost and improve overall workshop production efficiency, becoming a cost-effective general-purpose indexable insert for mass rough and semi-finish turning tasks.