What the heck is 420 modified.

M

macgregor22

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Sep 20, 2007
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Its used in the m9, m11, etc.
Just wondering how it preforms, never heard any reviews or seen testing.
I figure its a tough, easy to sharpen steel since the military uses it.

BTW, don't write it of because its a 420, remember that one of the best steels on the market is s90v aka 420v.
 
macgregor22 said:
Its used in the m9, m11, etc.
Just wondering how it preforms, never heard any reviews or seen testing.
I figure its a tough, easy to sharpen steel since the military uses it.

BTW, don't write it of because its a 420, remember that one of the best steels on the market is s90v aka 420v.
Click to expand...

Well, here is one possibility, a steel from Bohler.

http://www.matweb.com/search/datasheet.aspx?matguid=1fc1fd18191944cb8dfdd1eae672de17&ckck=1

Carbon, C 0.380 %
Chromium, Cr 13.6 %
Manganese, Mn 0.500 %
Silicon, Si 0.900 %
Vanadium, V 0.300 %
 
I read that it offers the performance of 440c at a lower price. I dont know if that is true or not, but Buck used it on their M9s(model 188) and on the Buckmaster knives. i have a few Buckmasters and i find that is a fairly decent steel. It holds an edge pretty good, and reasonably tough. Only real problems i found is that the edge tends to chip a bit under heavy chopping.
 
cutter17 said:
Thought modified 420 had additional carbon added to it.
Click to expand...

Standard 420 grade alloy has at least 0.15%C
There seem to be a few variants around. None of them has a specific specification, so none is locked, and all could be called 420 because they all have at least 0.15% C.

According to CRKT, 420J2 has 0.30% C
Bohler’s 420 Mod has 0.38% C
Latrobe 420HC has 0.45%

Of them all, the only one that interests me is 420HC, and that only if heat treated by Buck.
 
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