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I used it, because it is what I happen to have handy. scrap to me, that I wont care if its any good or not. But my question was not answered
Can the toughness be reduced by lower hardness...

So I started on my second attempt at forging a razor using a bearing race that I had left over from a rebuild I did a while back. Most of these are 52100 or similar material.

It forged alright...