Stainless Mold Base Steel


Edro Specialty Steels’ (Walnut, CA) RoyAlloy™ is a prehardened, free machining, 400 series stainless steel, developed specifically for improved plastics mold base tooling. The material demonstrates significant improvements in all areas, with features including enhanced machinability, improved stability, greater toughness, better weldability, and more consistent uniformity and hardness when compared with 420F. It is supplied heat-treated to approx. 321 HB (34 HRC).