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SAE AMS 6558A-2018
Steel, Bars, Wire, and Forgings, 10.5Mo - 6W - 3.75Cr - 2V (1.25 - 1.40C), Powder Metallurgy Product, Hot Isostatically Pressed
This specification covers a premium aircraft-quality, high-alloy steel gas-atomized and HIP-consolidated in the form of bars, wire, forgings, and forging stock.
Society of Automotive Engineers [sae]