Steel, Mechanical Tubing 0.95cr 0.20mo (0.38-0.43c) (SAE 4140)

Standard:
Revised:
  • 1998-04-01
 
  • HISTORICAL Access the latest revision: AMS6381J
Publisher:
  • SAE International
Pages:
7
Scope:

This specification covers an aircraft-quality, low-alloy steel in the form of mechanical tubing.

This tubing has been used typically for parts, 0.500 inch (12.70 mm) and under in section thickness at the time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 50 HRC when properly hardened and tempered and also parts of greater thickness but requiring proportionately lower hardness, but usage is not limited to such applications.

History:
Standard Published Revision Status
AMS6381J 2017-10-25 Latest Revised
2013-02-26 Historical Revised
2008-04-21 Historical Reaffirmed
1998-04-01 Historical Revised
1990-10-01 Historical Revised
1986-10-01 Historical Revised
1972-05-15 Historical Revised
1966-03-15 Historical Revised
1953-06-15 Historical Revised
1942-12-01 Historical Issued
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