4140 Steel

Shapes Available

  • Flat Bar
  • Hex Bar
  • Plate
  • Round Bar
  • Tubing

Industries

  • Aerospace
  • Manufacturing

Industry Names

  • 4140 Cond Annealed
  • 4140 Pre-Hardened
  • 4140 HT
  • 4140 Hot Roll
  • 4140 HR
  • 4140 Condition C
  • Alloy 4140

Material

  • Cold Finished and Alloy

Specifications

  • AISI 4140
  • AMS 6362 (Round Bar)
  • AMS 6381 (Tubing)
  • UNS G41400

Applications

  • Bearings
  • Cylinders
  • Gears
  • Hydraulic Shafts
  • Nuts and Bolts

Features

  • Good General Machinability

4140 steel is a Chrome – Moly alloy that contains chromium and molybdenum as strengthening agents. It offers a strong balance of strength, toughness and wear resistance.

For more info on aircraft alloys, check out this YouTube video we made or you can just watch the most recent video we did on 4140 as a stand alone grade below:

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.

Call us now! 847-272-3240 Request a Quote Now
Chemical Composition
ElementMinMax
C0.38 0.43
Cr0.80 1.1
Mn0.7 1.00
Mo0.15 0.25
P- 0.035
S- 0.04
Si0.15 0.30
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