• 9341 Penn Ave S, Bloomington, MN 55431
  • 800-447-3317

Vincent Metals offers 440C in a variety of forms: rod, bar, and plate.

440C is a martensitic stainless steel with a high carbon content. It possesses high strength and moderate corrosion resistance in a variety of environments, such as freshwater steam, gasoline, and food acids. It is heat treatable, and after undergoing such processes it achieves the highest strength of all 400 series stainless steel. When heat treated, small portions of 440C can be air-cooled, while larger pieces can be quenched in oil.

440C’s hardness and mechanical strength make it a material used in many products and industries, such as:

  • Knife blades
  • Surgical instruments
  • Chisels
  • Ball bearings
  • Structural aircraft parts

Chemical Data, Mechanical Properties and Specifications for 440C Stainless Steel

Chemical Range For 440C
Element Minimum Maximum
Carbon 0.95 1.20
Chromium 16.0 18.0
Iron Balance --
Manganese -- 1.00
Molybdenum -- 0.75
Phosphorus -- 0.040
Silicon -- 1.00
Sulphur -- 0.030


Typical Mechanical Properties for 440C
Form Tensile Strength Yield Strength Elongation at Break
Annealed Bar 110 ksi 65 ksi 14%


AMS 5630

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