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What does it mean when it says "HRC60/HRC40"?
I was looking for a functional katana online and I came across a sword that said it was "forged and differentially hardened, using the same process as the more expensive blades and producing an HRC60 edge and HRC40 back".
I know that many functional blades are folded steel, but I don't really know much else about swords when it comes to steel. Can someone please explain to me some key things to look for when it comes to buying a functional sword (especially the HRC thing, as I see it a lot).
Any other advice and information would be greatly appreciated too.
Thank you.
HRC 60 & HRC 40,are in reference to hardness.
www.swordmark.com/swords7.html
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