Micro-Melt® 440-XH

Micro-Melt® 440-XH is powder metallurgy, air-hardening, high carbon, high chromium, corrosion-resistant alloy with a maximum hardness of 64 HRC. The composition of Micro-Melt 440-XH is balanced to attain a minimum hardness of 60 HRC when air cooled from hardening temperatures of 1850 to 2000°F (1010°C to 1093°C) and is thus more forgiving during heat treatment than similar alloys. It can be considered either a high hardness 440C stainless steel or a corrosion-resistant D2 tool steel and corrosion resistance equivalent to 440C stainless steel.

Type Analysis

  • Carbon (Nominal) 1.6
  • Silicon (Maximum) 0.4
  • Nickel (Nominal) 0.35
  • Manganese (Maximum) 0.5
  • Chromium (Nominal) 16
  • Molybdenum (Nominal) 0.8
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 0.45

Applications

specialty knives, cutting tools. knife blades, bearing assemblies, needle valves, ball check valves, valve seats, pump parts, ball studs, bushings and wear-resistant textile components.

Applicable Specifications

Bar

Billet

Strip

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