USS 18-18-2 Stainless Steel (18% chromium-18% nickel-2% silicon) was developed specifically for superior resistance to stress-corrosion cracking in hot aqueous chloride solutions. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-253. Producer or source: United States Steel Corporation.