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Elmet Technologies

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AISI Type M43 Molybdenum High Speed Tool Steel (UNS T11343)
Categories: Metal; Ferrous Metal; Tool Steel

Material Notes: Used in high speed tool and cutting applications such as drills, milling processes, reamers, etc. Mo content promotes toughness, but requires more precise hardening conditions and caution about overheating.

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Component Elements PropertiesOriginal ValueComments
Carbon, C 1.15 - 1.25 %
Chromium, Cr 3.5 - 4.25 %
Cobalt, Co 7.75 - 8.75 %
Copper, Cu <= 0.25 %
Iron, Fe 70.8 - 76 %As Balance
Manganese, Mn 0.20 - 0.40 %
Molybdenum, Mo 7.5 - 8.5 %
Nickel, Ni <= 0.30 %
Phosphorus, P <= 0.030 %
Silicon, Si 0.15 - 0.65 %
Sulfur, S <= 0.030 %0.06 to 0.15% may be specified to improve machinability
Tungsten, W 2.25 - 3.0 %
Vanadium, V 1.5 - 1.75 %

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