“…High nitrogen steels are made by induction furnaces, 1,2) arc furnaces, 1,3,4) AOD furnaces, 5) Plasma arc furnaces 6,7,8) and pressure ESR process, 2,8,9) pressure arc slag process. 10) These steels made by conventional induction or arc furnace involves addition of nitrided ferro-alloys for nitrogen alloying and the addition is usually made in the final stages and casted with less holding time to minimise nitrogen loss.…”