CNMG120408MS PR015S (TLJ00922)

The CNMG120408MS PR015S is a high-performance indexable turning insert designed for medium turning of stainless steel and heat-resistant superalloys. The PR015S PVD-coated carbide grade is specifically optimised for the M and S ISO application groups, delivering exceptional toughness and edge stability under the high cutting forces and work-hardening conditions typical of stainless steel machining. The MS chipbreaker geometry with its raised dot pattern — visible in the image — provides reliable chip breaking at medium feeds in these challenging materials.

Key Features

• Insert shape: C (80° diamond) — 2 cutting edges per insert
• Size: 12mm x 04mm thickness x 08 nose radius (0.8mm)
• Chipbreaker: MS — medium turning geometry optimised for stainless steel and tough alloys
• Grade: PR015S (PVD-coated carbide) — dedicated stainless and superalloy grade with high toughness and edge stability
• ISO application: M10–M30, S10–S25
• Edges: 2 cutting edges

Applications

Medium turning, facing, and boring of stainless steel (304, 316, duplex), heat-resistant alloys, and nickel-based superalloys. Particularly effective where work-hardening and built-up edge are concerns. Compatible with CNMG-style toolholders. Available in packs of 10.