The high nitrogen austenite stainless steel 1Cr22Mn15N-0. 12C
0.42Si
14.96Mn
0.026P
0.001S
22.57Cr
0.56N has been produced using primary metal-1.84C
2.18Mn
24.88Cr by 20 t AOD refining - blowing O₂
N₂
adding electrolytc manganese
silicon iron and aluminium pig and adding NCr alloy to micro-adjusting composition of steel.The 590 kg ingot cast by refining steel and bloomed to 135 mm x 157 mm billet then continuously rolled to 8~12 mm round bars. The yield strength of finished product solid - solution - treated was 565~585 MPa
tensile strength 920~955 MPa
elongation 54.5%~56.5% and had excellent corrosion resistance.