440C Stainless Steel Round Bar | 440C Sheet

Shapes Available

  • Plate
  • Round Bar
  • Sheet


  • Manufacturing
  • Medical
  • Natural Gas
  • Oil Refining

Industry Names

  • 440C Stainless Steel
  • 440C Stainless


  • Stainless Steel


  • AMS 5618
  • AMS 5630
  • ASTM A276
  • UNS S44004


  • Aircraft Structural Parts
  • Bearings
  • Medical Instruments
  • Molds
  • Turbine Components


  • Corrosion Resistance
  • High Hardness
  • High Strength

440C Stainless Steel is a high carbon chromium steel. In addition, 440C is martensitic. This grade is meant to provide maximum hardness and wear resistance with stainless properties. 440C can be hardened to 60 HRC which is the highest hardness of any other stainless steel. 440C is typically used in bearing assemblies, cutlery, pump parts and textile machinery. 440C after heat treating is the capable of attaining the highest strength.

440C is available for order in round bar and mill quantities of sheet. 440C is also available in vac melt per AMS 5618. Looking for more information on 440C? Check out our latest video on the 400 series martensitic stainless steels here or just watch the most recent video we did on 440 as a stand alone grade below:

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Metal Properties
.2% Yield Strength 65 ksi
Elongation 14 %
Ultimate Tensile Strength 110 ksi
Chemical Composition
C.95 1.20
Cr16.0 18.0
Fe- Bal
Mn- 1.00
Mo- .75
P- .04
S- .03
Si- 1.00
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