Tool Steel Heat Treat Specifications … quick, terrific reference for injection molds and die cast molds!

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Tool steels for Injection Molds and Die Cast Molds and commonly used Rc ranges for hardening them. Use as a reference only.

Tool Steels:

A-2  Rc.59-62
A-6   Rc.59-62
D-2   Rc.60-62
H-13   Rc.50-52
O-1   Rc.58-64
O-6  Rc.58-64
S-7   Rc.55-57
420 SS  Rc.50-52

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