High-performance Cast-iron Milling Grade

The new WIDIA Victory™ grade for cast-iron milling, WK15CM, is now available for the company’s face mills, shoulder mills, and copy mills with dedicated geometries for castiron milling.

A fine-grained alumina layer gives better wear resistance by improving coating integrity at elevated speeds, the company reports.

Proprietary post-coat treatment of the inserts further increases cuttingedge toughness by improving coating stress. This helps fight thermal cracking and coating flaking, the No. 1 reason most milling inserts fail in machining cast irons, especially when coolant is applied.

Cutting edges also are micropolished to ease cutting forces and reduce friction and workpiece sticking.

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