Hard material or hardenable material
Hard material or hardenable material
(OP)
I have a need to heat treat a metal to 70 HRC I now use 4140 and its too soft and not enough hardenable and need to add carbide tips to compensate. I need to change the material and no heat is involved only wear and hardness.
still looking for the right machinable and hardenable material :(
JL
still looking for the right machinable and hardenable material :(
JL
JL





RE: Hard material or hardenable material
If you look at tool steels you might try CPM15V or CPM REX121. I don't think that you will hit 70Rc, but you can get close.
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RE: Hard material or hardenable material
JL
RE: Hard material or hardenable material
RE: Hard material or hardenable material
CPM-121 will get you damn close to 70 (68 has been my highest requirement thus far). That being said, if you've never machined it, it's much worse (in the unhardened state) than 15V. Small hole drilling the stuff is a pain, and it will blow through turning inserts as well.
CPM-T15, or most grades of T15 for that matter, will harden to 67 HRc. I don't know if you're grinding the tips or not, but I'd suggest going with the P/M grade CPM steels to take advantage of the smaller carbides. Grinding wrought T15 often leads to surface cracking if you're not careful.
RE: Hard material or hardenable material
RE: Hard material or hardenable material
RE: Hard material or hardenable material
That will get you wear resistance and some toughness, though not too much of the latter.
Nick
I love materials science!