N680 steel, by BOHLER, contains about 0.20% nitrogen and over 17% chromium making it extremely corrosion resistant. If your blade will be in frequent contact with salt water for example then this is the steel for you. It’s also a fine grained steel that can take a very fine edge. Consider it a cheaper alternative to H1 steel with decent edge retention but it won’t hold an edge as long as say, 154CM.
Benchmade Fixed Blade Knives
Benchmade 112 H2O Fixed Blade Dive Knife N680 Ultra Stainless B112SBK-BLK
$254.95