440c Heat Treat Bladeforums, . And I was wondering if it's posible to make small changes to 440c with a rockwell hardness of 58 after it anybody have any tips on the best way to heat treat 440c with a torch i have tried several different methods a few didnt work to well and one worked just good enough I am not a knifemaker so i hope using this forum to ask a question is o. 440C Hardening : **Knives should be cleaned by washing with soapy water and then either placed into a foil pouch or coated with high temperature anti-scale/decarburization compound prior to heat treat if The 440A, 440B and 440C steels are too difficult to form in their hardened state, so you will need to anneal the blank before you can form the blade. Chromium is resistant to machining, grinding, and finishing in particular, and this is why a Has anyone turned 440C H/T to 50Rc? I'm making a repeat job where I machine the parts from annealed and send it out for heat treat afterwards. If a knife is advertized as just 440 , beware , it's probably the A or B type. Experience knifemakers know that 440C steel cannot be used in an open-air forge successfully. I am sure this question has been asked and answered here before. (I live on the island of Newfoundland so shipping things out to be heat treated would be a royal pain. My initial test knife hardened properly at 1850F, plate quenched with an AQ hardness of 60rc. Hello everyone, first post! I just ordered some 440C.

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