A customer of ours is carburizing 5120 (C-0.17-0.23, Mn-0.60-0.90, Cr-0.70-0.90) steel plate 3/8" thickness to a 60-62 Rc. That grade, in the volumes they need, does not exist domestically....they would need to buy a year's worth for one mill run.
I thought of the possibility of...