Browse Standards AMS6490E
Historical REVISED 2000-09-01

Steel Bars, Forgings, and Tubing 4.0cr 4.25mo 1.0v (0.77-0.85c) Premium Aircraft-Quality for Bearing Applications Consumable Electrode Vacuum Melted AMS6490E

This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.

These products have been used typically for critical parts, such as bearings, operating under heavy loads and high speeds at moderate temperatures and subject to very rigid inspection standards, but usage is not limited to such applications.

AMS6490J
2018-11-05
Latest
Revised
AMS6490H
2014-05-14
Historical
Revised
AMS6490G
2010-04-19
Historical
Revised
AMS6490F
2005-08-31
Historical
Revised
AMS6490E
2000-09-01
Historical
Revised
AMS6490D
1994-04-01
Historical
Reaffirmed
AMS6490C
1974-12-15
Historical
Revised
AMS6490B
1968-05-01
Historical
Revised
AMS6490A
1964-01-31
Historical
Revised
AMS6490
1963-07-15
Historical
Issued

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