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M2 HRC retested and some interesting finds

dalee100 said:
It would be very unlikely for a high speed steel like M2/M4 to lose hardness during coating. The very reason for it's existence is it's ability to hold it's hardness and not to lose it's temper to a red heat. And coated HSS tooling is almost industry standard today.
Click to expand...

Good point. Thanks! I forget that some of my favorite steels have a lot more tungsten than others.
 
So, most likely I got the lemon, unless there was a catastrophic jump in temps when bodycote was doing my blade ;)

P.S. I've sent 2 M2 Nimravi blades to phil for rehardening and regrinding.
 
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