USS CHAR-PAC is a heat treated carbon steel having exceptionally good notch toughness as well as high strength. It is recommended for pressure vessels, low temperature storage containers, earth moving equipment, offshore drilling rigs, etc. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CS-26. Producer or source: United States Steel Corporation.