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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. For a steel to be considered stainless it must have a Chromium content of at least 10.5%. [24] 154CM / ATS-34 steels. These two steels are practically identical in composition ...
440C (UNS designation S44004) is a martensitic 400 series stainless steel, [1] and has the highest carbon content of the 400 stainless steel series. It can be heat treated to reach hardness of 58 to 60 HRC. It can be used to make rolling contact stainless bearings, e.g. ball bearings and roller bearings. It is also used to make knife blades.
[7] [8] Before 1981, the specially heat treated stainless steel used was 440C, and from 1981 to 1992 the company used 425M steel. Since 1993, Buck has mostly used 420HC stainless steel for Model 110 blades, although CPM S30V steel has also been used for some production runs. Its design is one of the most imitated knife patterns in the world. [1]
Schrade Cutlery [47] and Spyderco use 154CM, 440C, D2, S30V, S60V and S90V steel, [48] [49] [50] and Ernest Emerson's knives are hard-ground from differentially heat-treated A2 tool steel. [51] Emerson Knives machines blades from 154CM steel, [ citation needed ] and Mike Snody uses A2, S35V , 154CM and 440C steels.
Martensitic stainless steels can be high- or low-carbon steels built around the composition of iron, 12% up to 17% chromium, carbon from 0.10% (Type 410) up to 1.2% (Type 440C): [8] The chromium and carbon contents are balanced to have a martensitic structure.
Engraving a knife. Knife making is the process of manufacturing a knife by any one or a combination of processes: stock removal, forging to shape, welded lamination or investment cast. [1] Typical metals used come from the carbon steel, tool, or stainless steel families. Primitive knives have been made from bronze, copper, brass, iron, obsidian ...
In 2009, Crucible Steel introduced an update to CPM-S30V to meet the needs of renowned knife maker Chris Reeve that they called CPM-S35VN. The addition of 0.5% Niobium, and reductions in both Carbon (from 1.45% to 1.40%) and Vanadium (from 4% to 3%) produced an alloy with 25% increase in measured Charpy V-notch toughness over S30V (Crucible claims 15-20% improvement).
Crucible 154CM is a modification of martensitic stainless steel type 440C to which molybdenum has been added. It was originally developed for tough industrial applications and combines three principal elements: carbon, chromium, and molybdenum. [1] Hitachi Corporation of Japan copied the properties of this steel for their own brand known as ATS ...