This specification covers a premium-quality high-strength, low-alloy steel in the form of bars, forgings, mechanical tubing, flash welded rings, and stock for forging or flash welded rings.
This specification covers an aircraft-quality low-alloy steel in the form of bars, forgings, mechanical tubing, flash welded rings, and stock for forging and flash welded rings.
This specification covers an aircraft-quality, low-alloy steel in the form of heat-treated bars 1.50 inches (38.1 mm) and less in diameter or least distance between parallel sides.