High nitrogen austenite stainless steel has been more and more widely used in industrial field as it has many distinctive advantages such as high strength
better toughness
non-magnetic
nice corrosion resistance and low sensitiveness on grain-boundary corrosion
but of which the research in basic theory and manufacturing technology are relatively backward. The development history and present status of metallurgical theory of high nitrogen austenite stainless steel are reviewed in this paper
and the steel grade
chemical composition
manufacturing process and mechanical properties of high nitrogen austenite stainless steel and its development and prospect are summarized.