AMS6250J Steel Bars, Forgings, and Tubing 1.5cr 3.5ni (0.07-0.13c) (SAE 3310)

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 carburized parts, such as gears, which require high minimum core hardness with narrow range, but usage is not limited to such applications.