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I haven't, I will be taking samples to test outside the plant though. But I tested for Nitrogen in practice last night, increased Al% to 0.4% with extra CaO to form AlN. It is a common practice among foundrymen when casting high Mn steels in an EAF to dilute it with approximately 30% low alloy...

It is a mixture of flourite + lime and metallic aluminum. Melting is taking place in an induction furnace. LF is not available, the method is from melting +deoxidation +ferroalloys to casting. I have been adding FeMn with 76%wt Mn and 1-2%C with some Si addition if necessary. All ferroalloys...

I have been having trouble casting GX120MnCr18-2 with Mn content at 17.5% due to porosity defects-blowholes (probably gas porosity due to hydrogen solubility). The mold humidity as well as the sand's too were tested and are in given range. The same molds were casted with Mn content of 12$ and...