tried this mod with both Angel's and Bob's, switched off both cheaper steel and new steel, yet i still cant seem to smelt it. i think it may be something with Angel's Smelting but im not sure? that's my gut feeling, anyhow.
Probably something in Angel's mods. I mean, I'm not speaking from experience, but I'm fairly sure he does change steel too, so that could cause the same issue as mine does. (Except Angels is unlikely to have settings to turn it off)