Browse Standards AMS6490C
Historical REVISED 1974-12-15

STEEL BARS, FORGINGS, AND TUBING 4.0Cr - 4.2Mo - 1.OV (0.77 - 0.85C) Premium Bearing Quality, Consumable Electrode Vacuum Melted AMS6490C

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