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52100 Steel

Shapes Available

  • Round Bar
  • Tubing


  • Aerospace
  • Manufacturing
  • Natural Gas
  • Oil Refining

Industry Names

  • 52100
  • 52100 Vac Melt
  • 52100 Air Melt
  • 52100 VAR


  • Cold Finished and Alloy


  • AMS 6350 (Sheet-Plate)
  • AMS 6370 (Round Bar)
  • AMS 6371
  • AMS 6440
  • AMS 6444
  • MIL-S-6758
  • MIL-T-6739


  • Bearings
  • Bushings
  • Gears
  • Tools


  • Good General Formability
  • Good General Machinability

52100 steel is a deep hardening alloy used for aircraft bearings or other high stressed parts where good rolling contact fatigue strength is required at temps below 400 degrees. The 52100 vac melt steel material offers superior cleanliness and internal soundness over the conventional air melted SAE 52100.

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Metal Properties
Modulus of Elasticity 30 psi
Density 0.283 lb/inch³
Chemical Composition
Al- 0.050
C0.93 1.05
Cr1.35 1.60
Cu- 0.30
Fe96.50 97.32
Mn0.25 0.45
Mo- 0.10
Ni- 0.25
P- 0.025
S- 0.015
Si0.15 0.35

DISCLAIMER: The information provided on this Web site, technical or otherwise, is merely for informational purposes, and is not intended to serve as a guide, manual, instructions, or any kind reference for proper safety procedures or material purchasing. Michlin Metals makes no warranty, express or implied, based on the statements on this Web site and, as such, will not be liable for any damages, either direct or indirect, including but not limited to consequential damages, such as damages for loss of profits, that may arise based on reliance on the information provided on this Web site. Some information has been referenced from reliable industry sources. Tradenames listed are the sole property of the tradename owners. Michlin Metals typically provides branded products through its relationships with mills and authorized re-sellers. Equivalent non-branded product is sometimes also available through certified sources of such products. Michlin Metals will never substitute non-branded product when branded product is requested.

Call us now! 847-272-3240