MANUFACTURING SEQUENCE FOR FABRICATION OF HIGH-STRENGTH STEEL PARTS 300M or 4340 Modified Low-Alloy Steels 270,000 psi (1860 MPa) Tensile Strength and Higher
Qualification, Approval, and Control of Premium-Quality Forgings Alloy Steels and Heat-Treatable Corrosion and Heat Resistant Steels and Alloys (Stabilized: Aug 2017)