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W 1.2738 IndusteelW 1.2738 A 300 HB/32 HRC prehardened mold steel Material properties. 300HB (32 HRC) prehardened grade specialty designed for plastic mold industry, for medium and very large size moulds and tools with good machinability. Consistent texturing and polishing improved by very low sulphur content and hardness homogeneity.
What is the difference between 718 mold steel and P20 mold?Apr 15, 2020 · Compared with the traditional plastic mold steel P20, 1% nickel is added to 718, has better toughness and hardenability. And it is more excellent in large cross-sectional molds. This steel type is suitable for large-scale plastics, especially those with thickness greater than 400mm.