440C Stainless Steel Bar

440C stainless steel is 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. 440C stainless steel has 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

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Specification
OD
Manufacture Method
Alloy Grade
Shape
Grade
Diameter

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SKU Description DFARS Manufacture Method Diameter Shape Specification
Sku: A4162 Description: DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS 5632
Sku: A3819 Description: 440 AMS 5880 1.8750 x 12 FT DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS 5880
Sku: A3663 Description: 440 HRAP SA 1254 2.3750 x 144 DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: SA 1254 AMS5880
Sku: A3247 Description: 440 AMS 5630 2.7500 DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS 5630 AMS-QQS-763
Sku: A0708 Description: 440 AMS 5630 1.5000 DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS5630 L AMS-QQS-763
Sku: 87581 Description: 440 AMS 5630 .3750 DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS 5630 PMI 2.150
Sku: 85463 Description: 440 HRAP AMS5630 5.0000 x 12' RL DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS5630 L AMS5880
Sku: 85454 Description: 440 AMS 5630 4.2500 x 12'RL DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS5630 L AMS5880
Sku: 85423 Description: 440 HRAP AMS5630 3.2500 x 12'RL DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS5630 L AMS5880
Sku: 82101 Description: 440 AMS 5630 4.0000 DFARS: No Manufacture Method: HOT ROLLED ANNEALED & PICKLED Diameter: Shape: Specification: AMS5630 L AMS-QQS-763

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Grade 440C ss 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. 440C stainless steel 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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