I've been getting some 301 Full Hard in from my supplier. The data sheet calls out a minimum Rockwell Hardness of C41, however my in-house testing shows a Knoop Hardness of 550, this translates in to a Rockwell of ~51. Quite a bit more than the minimum spec (Tensile strength of ~1790Mpa vs 1276Mpa), I'm wondering if anyone has experience with 301 full hard... would you say it is normal to see hardness that far above the minimum or can I expect to one day get some material in that will have a much lower hardness?
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