SAE AMS6421
Steel, Bars, Forgings, and Tubing, 0.80Cr - 0.85Ni - 0.20Mo - 0.003B (0.35 - 0.40C) (Modified 98B37).
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
History:| Standard | Published | Revision | Status |
|---|---|---|---|
| AMS6421F | 2011-05-24 | Latest | |
| AMS6421E | 2006-06-21 | Historical | |
| AMS6421D | 2000-12-15 | Historical | |
| AMS6421C | 1989-10-01 | Historical | |
| AMS6421B | 1983-10-01 | Historical | |
| AMS6421A | 1982-10-01 | Historical | |
| AMS6421 | 1951-11-01 | Historical |