Bisalloy Structural 80 Pressure Vessel Steel (80 ksi minimum yield strength) is a low-carbon, low-alloy, high-strength structural steel for pressure vessel applications. It exhibits excellent cold formability and low-temperature fracture toughness. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, machining, and joining. Filing Code: SA-844. Producer or source: Bisalloy Steels Group Limited.