国内外双相不锈钢材料和应用的发展

Development of Duplex Stainless Steel Materials and their Application at Home and Abroad

1概况 近年来世界双相不锈钢的产量在增长，大致占不锈钢总产量的1％～2％。中国双相不锈钢的产量随着不锈钢的产量（2008年年产694．3万吨，钢材自给率占82％）突飞猛进地发展也有了较大的增长，2008年国内双相不锈钢的粗钢产量为16867吨，比2007年提高了1．6倍。

1 General situation In recent years, the world output of duplex stainless steels is increased, which accounts for 1%-2% of the stainless steel output. Along with the sharp growth of the stainless steel output in China （in 2008, the output of stainless steel is 6.934 million tons, the self-sufficiency rate of the steel products is 82%）, the duplex stainless steel output in China has also been a sharp growth. In 2008, the output of duplex stainless crude steel in China reached to 16867 ton, which is 1.6 times over that of 2007.