Micro-Melt® 440C

UNS #S44004

Micro-Melt® 440C is a powder metallurgy, high-carbon chromium stainless steel designed to provide stainless properties with maximum hardness and improved machinability and galling resistance over cast/wrought 440C. When heat-treated, Micro-Melt 440C attains the highest hardness of any stainless steel, about HRC 61. Its refined microstructure consisting of a uniform distribution of small carbides and a fine grain size enhance cutting performance as much as 40% over equivalent cast/wrought steels.

Type Analysis

  • Carbon (Nominal) 0.95-1.20
  • 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

Applicable Specifications

  • AMS 5618
  • AMS 5630
  • AMS 5880
  • ASTM A276
  • ASTM A314
  • ASTM A473
  • ASTM A493
  • ASTM A580
  • ASTM A756
  • QQ-S-763

Rounds

Billet

Strip

Wire

Rod

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