International Steel Group (ISG) produces seven grades of steel in the ASTM A 514 (structural applications) and ASTM A 517 (pressure vessel applications) families. These are grades A, B, E, F, H, P, and Q. They are chemically identical between A 514 and A 517 This datasheet provides information on composition and tensile properties. It also includes information on heat treating and joining. Filing Code: SA-524. Producer or source: International Steel Group Inc.