Need help! Difference in o1 and o2???

M

mrbushido

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May 10, 2015
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Hello looking at either buying a enzo trapper 95 in o1 with a scandi or a casstrom no 14 in o2/bohler k720 scandi

What is the best steel? And how different are the steels?

Any difference in quality of heat treat?
 
They are pretty similar. O1 has some tungsten and 02 doesn't. Some people run o2 pretty hard. Z knives steel composition chart should be on your desk top, it is fascinating. Russ
 
The two steels, O1 and O2, are extremely close to each other. I doubt anyone could tell the two apart without examining it with SEM or whatever. As mentioned by mycough, O1 has tungsten in it. Not a whole lot, but it aids in wear resistance. O2 does not have it. Also O2 usually is a bit higher in Mn count, making it slightly deeper hardening than O1, and provides a very very "dark" steel in damascus. O2 technically might have smaller grain size, but that's splitting hairs. O1 has extremely fine grain in it as well. Personally I prefer the Tungsten in O1.
 
Cannot speak to the quality in the brands. O1 and O2 are similar, of course. 14c28n is an excellent steel. Stainless, very fine grain, very small carbide count. D2 is considered almost stainless, but it has rather large Cr carbides. O1 O2 and 14c28n will have exceptionally fine grain, with relatively low wear resistance and high toughness(relative.....relative). D2 has large(ish) grain, with tons of wear resistance, low toughness. O1 vs 14c28 vs D2.....all three are completely different steels from one another.
 
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