Desalination of Seawater

　　Double-phase stainless steel has gradually become one important material for desalination of seawater because of excellent corrosion resistance and stress corrosion cracking resistance. Stress corrosion cracking is one corrosive mode caused by sudden failure of materials in the presence of tensile stress under certain temperature and corrosive environment. The strength of double-phase stainless steel is double times austenitic stainless steel. By continuous technological development, our double-phase stainless steel composite boards are widely used in production of evaporators of multistage flash distillation (MSF) seawater desalinating devices because of excellent mechanical property and more economical costs.