ARMCO SSS 100A is a low-carbon, fine-grained, quenched-and-tempered alloy steel. It is strong, tough and readily fabricated with equipment and facilities suited to its high strength. It has a minimum yield strength of 100,000 psi. Among its many uses are structural components in heavy-duty trailers, buildings, bridges, ships, mobile drilling rigs and pressure vessels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-380. Producer or source: Armco Inc., Southwestern Steel Division.