Harry Brearley
Harry Brearley (18 February 1871 – 14 July 1948) was an English metallurgist, usually credited with the invention of "rustless steel" (later to be called "stainless steel" in the anglophone world).
List of blade materials
Stainless steel is a popular class of material for knife blades because it resists corrosion and is easy to maintain. However, it is not impervious to corrosion or rust. In order for a steel to be considered stainless it must have a chromium content of at least 10.5%.These two steels are practically identical in composition. They were introduced into custom knives by Bob Loveless circa 1972.
The latter two are considered premium cutlery steels for both folding knives and fixed blades.American stainless steel manufactured by Allegheny Technologies, North American Stainless and Crucible Industries. Because the 300 series is non-hardenable (non-Martensitic), they are primarily used in entry level dive knives and used as the outer layers in a San Mai blade.