C+N AUSTENITIC STAINLESS STEEL WITH HIGH STRENGTH AND CORROSION RESISTANCE HAVING TUNGSTEN AND FABRICATION METHOD THEREOF

摘要

PURPOSE: A C+N austenitic stainless steel with high strength and corrosion resistance having tungsten and a fabrication method thereof are provided to ensure tensile strength of 850MPa or more and uniform elongation of 50% or more and to enhance the shaping performance since the contents an invading element and a replacing element are controlled. CONSTITUTION: A C+N austenitic stainless steel with high strength and corrosion resistance having tungsten consists of Mn of 8~12 weight%, Cr of 15~20 weight%, Ni of 2 weight% or less, tungsten of 1~4 weight%, carbon and nitride of total 0.6~1.0 weight%, Fe and inevitable other impurities. The ratio of the Mn to the Cr is 0.5~1.0. The total content of the Mn and the Cr is 30 weight% or less. The content of the nitrogen is 0.3 weight% or more. The tensile strength of the austenitic stainless steel is 850MPa or more. The elongation of the austenitic stainless steel is uniformly 50% or more. The austenitic stainless steel has a mechanical property.