UNS S44003 Knife Steel
Composition Analysis Graph, Equivalents And Overview

S44003(UNS) - Highly corrosion resistant stainless steel. Used in budget and dive knives. It's in the middle of AISI 440 group. Might've been one of the better choices for stainless steel knives back in the day, but these days it's nothing to stand out. It was never as good for the knives as the AISI 440C stainless steel, and 440C is not a premium knife steel for more then two decades. The highlight would be high corrosion resistance and decent toughness, and if that's what you're looking for 440B will do. Randall still uses it in their stainless knives. 440B steel is mentioned in a popular TV crime show Bones, season 9, episode - The Source in the Sludge. Hodgins determines the murder weapon was made out of 440B steel and describes it as a specialty steel, used in a very high end tactical knives. Frankly, none of that is true. Just a stainless alloy, nothing special about it, and very high end tactical knives in 2009 or even decade before that were using better steels. May be the writers assumed 440B was special because Randal uses them, I have no idea, but it would've been better if the writers did research more thoroughly.

Manufacturing Technology - Ingot

Country - United States(US)