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Effects of varying austenitizing temperatures on vacuum hardening of type 440C stainless steel

Puskar, J.D.; Hanson, R.A.; Chidester, A.J.; Houghton, R.L.

Type 440C stainless steel is frequently used to make components that require atmospheric corrosion resistance. It is also one of the few stainless steels which can be hardened to the degree necessary to make anti-friction roller bearings. Vacuum furnace hardening is commonly used for Type 440C bearing components. In this study, the effect of hardening temperature, quenching media (oil or gas pressure quench) and tempering temperature on the final part hardness will be described. Copyright © 2009 ASM International® All rights reserved.