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They are to meet a 50-60 HRC Hardness but that is admittedly vague.

A forging with a vague hardness callout.

Finished part print calls out a core hardness of 50-60hrc. At our facility parts undergo an additional induction hardening process to increase the surface hardness further.

Hello, I have a quick question. We currently purchase a forging from an outside vendor. Our forging print calls out "Hardness 50-60 HRC", during a PPAP for our customer we discovered that the core hardness on several forgings was 61-63 HRC but the surface hardness was within the print...