Abstract ARMCO FORMABLE 50 HR is a hot-rolled high-strength low-alloy steel that provides excellent ductility, weldability and edge-tear resistance at a minimum yield strength of 50,000 psi (345 MPa). It has unusually good fabricating properties that are the result of closely controlled processing of a fully killed, low-carbon, vacuum-degassed, columbium-alloyed steel. This special composition and processing practice minimize harmful nonmetallic inclusions that hamper formability. Typical applications include automotive, construction and farm-equipment components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-356. Producer or source: Armco Inc., Eastern Steel Division.