PM2 steel question?

joeyza

joeyza

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Feb 27, 2013
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How do the steels used in PM2 sprint runs such as CTS-20CP, CTS-204P, M390 and any of the other sprint run steels compare with the regular PM2 S30V steel?
Asking in terms of edge retention, toughness corrosion resistance and all that good stuff:thumbup:
thanks
 
Corrosion is probably about the same but edge retention and toughness in all the sprint steels are higher, more so with S90v and 20cp.
 
CTS-20CP & CTS-204P, are Carpenter's version of M390 and S90V

M390 has great edge retention and is faily easy to sharpen.
S90V has even better edge retention but is also more difficult to sharpen.

both are supeior to S30V, wich, dont get me wrong is a fine steel.
 
Toughness (in a practical sense) is harder to measure since we don't typically test our blades to destruction.
In general terms those high wear resistance steels have reduced toughness, although with modern particle metallurgy techniques they can still be adequately tough.
I consider the Para 2 to be a slicing knife and I wouldn't chop or baton with one, so toughness is a secondary consideration for me.
I find that for a general purpose knife the S30V version has well balanced properties. If you want to slice a lot of cardboard or skin a boar you might appreciate one of the more wear resistant versions.
 
Are those two Carpenter's steels CPM steel?

I checked out their website and it looks like all the steel they produce is Particle Metallurgy. (I've got the flu right now, so I was slacking in my research.).:)
 
Last edited:
southernknives said:
Are those two Carpenter's steels CPM steel?

I checked out their website and it looks like all the steel they produce is Particle Metallurgy. (I've got the flu right now, so I was slacking in my research.).:)
Click to expand...
Those two Carpenter steels are made with particle metallurgy, yes. CPM stands for Crucible (different company) Particle Metallurgy. Just PM is the shorthand you want to use when denoting the foundry process itself.
 
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