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440B

UNS #S44003

440B is a high-carbon chromium stainless steel that attains a hardness of Rockwell C 58 when heat treated. This high-carbon chromium steel is designed to provide stainless properties with excellent hardness. In some respects it behaves similarly to tool steels.
Type Analysis
  • Carbon (Maximum) 0.75-0.95%
  • Phosphorus (Maximum) 0.04%
  • Silicon (Maximum) 1%
  • Manganese (Maximum) 1%
  • Sulfur (Maximum) 0.03%
  • Chromium (Nominal) 16.00-18.00%
  • Molybdenum (Nominal) 0.75%
  • Iron (Nominal) Balance%
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Applications

Applicable Specifications

  • ASTM A276
  • ASTM A473
  • ASTM F899
  • ASTM A314
  • ASTM A580
  • QQ-S-763

Bar

Rounds

Billet

Strip

Wire

Rod

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