0. 14C-0.35N austenite stainless steel 1Mn15Cr17Ni2N melted by 25t EAF-VOD+LF-680 kg ingot process. [N] was 0.040% and [O] was 0.0158% at end of VOD refining
and the analysis results indicated [N] 0. 139% and [0]0.0033% after nitrogen blown for 45 min in LF with blown nitrogen amount 50 m³ with blown nitrogen average yield 33.07%. Then added 500 kg chromium nitride (8.60%N) and 150 kg manganese nitride(5. 13%N)
with sampled analysis the [N] was 0.35% and the [O] was 0.0029%
the comprehensive yield for added chromium nitride and manganese nitride was 87.41%.