Not sure if CPM-D2 has the same heat treat recipe as regular D2?

S

shqxk

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Mar 26, 2012
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I can't find any data about the steel, probably because it was discontinued...

This is my plan.

Pre Heat- 1450F
Austenitizing- 1900 25min soak
Quench in 500F molten salt, 1 min equalize then air cool
When it reach room temperature immediately put in L2N and cryo for 4 hours
450F Tempering x 2


Any suggestion?
 
Last edited:
shqxk said:
I can't find any data about the steel, probably because it was discontinued...

This is my plan.

Pre Heat- 1450F
Austenitizing- 1900 25min soak
Quench in 500F molten salt, 1 min equalize then air cool
When it reach room temperature immediately put in L2N and cryo for 4 hours
450F Tempering x 2


Any suggestion?
Click to expand...

Yeah that ought to work :thumbup:

I ran into trouble with CPM D2, but what you're talking about is pretty close to the best I could do with it.

I think CPM D2 is an unstable material and small variations in material condition going into heat treat can have a large effect on the outcome if you stray far from the middle of the road (which you're not). I would have liked to see it with less chrome and more vanadium, I think that would have helped. As it was, I could never get a really good balance of properties and went back to regular D2 which actually works really well. I attribute this to the fine carbides from the CPM process not always sticking around when/where you need them during the heat treat process.

Whatever you do, I recommend you test the entire length of the edge of each knife with a little hardwood whittling.
 
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