Browse Standards AMS6421D
Historical Revised 2000-12-15

Steel Bars, Forgings, and Tubing, 0.80cr 0.85ni 0.20mo 0.003b (0.35-0.40c) AMS6421D

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

These products have been used typically for parts, 0.875 in. (22.22 mm) and under in section thickness at 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 for parts of greater thickness requiring proportionately lower hardness, but usage is not limited to such applications.

AMS6421G
2016-04-18
Latest
Revised
AMS6421F
2011-05-24
Historical
Revised
AMS6421E
2006-06-21
Historical
Revised
AMS6421D
2000-12-15
Historical
Revised
AMS6421C
1994-04-01
Historical
Reaffirmed
AMS6421B
1983-10-01
Historical
Revised
AMS6421A
1982-10-01
Historical
Noncurrent
AMS6421
1951-11-01
Historical
Issued

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