Bisalloy Structural 70 steel (70 ksi minimum yield strength) is a low-carbon, low-alloy, high-strength structural steel exhibiting excellent cold formability and low-temperature fracture toughness. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength. It also includes information on forming and joining. Filing Code: SA-840. Producer or source: Bisalloy Steels Group Limited.