November 2, 2018

M-50 Bar

M-50 VIM-VAR is a premium-melted alloy exhibiting excellent resistance to multi-axial stresses, resistance to softening at high service temperatures and good resistance to oxidation. Characteristic of a high-speed tool steel, it possesses high compressive strength. All M-50 at Sullivan is melted in the USA. Domestic Source and DFARS Approved.

FOR REQUIREMENTS: High Temperature Steel, Aircraft Bearings
MELT PRACTICE: VIM-VAR
SPECIFICATIONS: AISI Type M-50
AMS 6491 (VIM-VAR)
AMS 6490 (VAR)
Reference UNS K88165

Benefits of M-50

  • Exhibits 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.
  • Due to the alloy’s high degree of cleanliness, parts are capable of being finished to a high luster.
  • Used in a wide variety of applications for components which require high wear resistance and strength at elevated temperatures

Typical Applications

  • Aircraft Engine Bearings
  • Helicopter Rotor Bearings
  • Gas Turbines (requiring hot hardness)
  • High Performance Racing Engines
  • Tooling Applications

Chemical Composition – VIM-VAR

  C Cr Si Ni V W Mn Mo S P Co Cu
min. 0.80 4.00 0.90 0.15 4.00
max. 0.85 4.25 0.25 0.15 1.10 0.25 0.35 4.50 0.008 0.015 0.25 0.10

Stocking Sizes

0.236″ – 6.500″ø

> Our Current Stock Summary


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