M-50

UNS #T11350

M-50 bearing steel is a premium-melted alloy refined using vacuum-induction melting (VIM) and vacuum-arc remelting (VAR) exhibiting excellent resistance to multi-axial stresses and softening at high service temperatures, as well as good resistance to oxidation. Characteristic of a high-speed tool steel, it possesses high compressive strength and parts are capable of being finished to a high luster due to the alloy's high degree of cleanliness.

Type Analysis

  • Carbon (Nominal) 0.8
  • Phosphorus (Maximum) 0.015
  • Silicon (Nominal) 0.2
  • Sulfur (Maximum) 0.015
  • Chromium (Nominal) 4
  • Molybdenum (Nominal) 4
  • Iron (Nominal) Balance
  • Vanadium (Nominal) 1

Applications

Aircraft engine and gas turbine bearings, tooling applications

Applicable Specifications

  • AMS 6490
  • AMS 6491

Bar

Billet

Rod

Rounds

Wire

Shapes

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