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Bohler N690, the equivalent of 440F, which is 440C with a bit of Cobalt. It is imported from Austria.

1.07% Carbon, 17% Chromium, 1.5% Cobalt, 1.1% Molybdenum, 0.1% Vanadium


Nail Mark

A groove cut or pressed into the back of the blade for the thumb nail to easily open the knife.


Nail Pull

see Nail Mark


Navy, Ancient Knife

Large curved handle with a very blunt blade, could cut but not stab.


Adds strength and toughness. Expressed as NI.


Nickel Silver or German Silver

A alloy of copper, zinc and nickel.



Used in place of carbon for the steel matrix. The Nitrogen atom will function in a similar manner to the carbon atom but offers unusual advantages in corrosion resistance. Expressed as N.



The Latin name for the stone from which Arkansas Stones are cut. This stone is found in a wide range of density and ranges from very coarse to very very fine.