DarkWeb
Well-Known Member
It's got Moly in it. Mostly white iron with a lot of chrome. It doesn't work harden much. It is 65 rockwell as is. A regular carbide insert won't even scratch it.
I had to lathe some high moly stuff a long time back. If you weren't super graceful it would work harden and break the carbides like nothing. And then you'd need to start over with a fresh piece of material because you weren't cutting it again.