440C Stainless Steel Bar

A high carbon type of stainless, this is the alloy most often used for knife-making. Can be heat treated for high strength and hardness. Greater abrasion and wear resistance for use in bearing and bushing applications. Corrosion resistant only in the hardened condition.

Applications:

  • Ball bearings and races
  • Nozzles
  • Knives and measuring instruments
  • Surgical tools
  • Valves

Grade 440C is a high carbon martensitic stainless with moderate corrosion resistance good strength, and the ability to obtain and hold excellent hardness (Rc 60) and wear resistance. It is considered to be slightly cold workable by common practices and does respond to heat treatment.

Chemistry
440C Stainless
Nickel (Ni) .75%
Molybdenum .75%
Copper (Cu) .5%
Manganese 1% max
Iron (Fe) Balance
Carbon (C) .95 – 1.2%
Chromium (Cr) 16 – 18%
Manganese (Mn) 1% max
Phosphorus (P) 0.04% max
Sulphur (S) 0.03% max
Silicon (Si) 1% max

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