Steel Bars, Forgings, and Rings 0.50cr 0.55ni 0.25mo (0.38-0.43c) (SAE 8740)

Standard:
Revised:
  • 2000-05-01
 
  • HISTORICAL Access the latest revision: AMS6322P
Publisher:
  • SAE International
Pages:
8
Scope:

This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, flash welded rings, and stock for forging or flash welded rings.

These products have been used typically for parts with section thickness of 0.375 in. (9.50 mm) and under 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
AMS6322P 2014-06-05 Latest Revised
2009-06-11 Historical Reaffirmed
2005-04-25 Historical Revised
2000-05-01 Historical Revised
1992-04-01 Historical Reaffirmed
1980-07-15 Historical Revised
1979-07-16 Historical Revised
1972-05-15 Historical Revised
1967-11-01 Historical Revised
1964-01-31 Historical Revised
1951-06-01 Historical Revised
1950-12-01 Historical Revised
1945-08-01 Historical Revised
1943-04-01 Historical Revised
1942-09-01 Historical Issued
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