It's better on steel than aluminum Walrus. I've had that machine for many years, and it' s a great machine for steel. Not a lot of "bells & whistles", but then again no finicky electronic control boards to worry about -- old school industrial quality all the way.
For $200 you're getting a GREAT deal. Good luck!!!
It will spin your meter though, and in order to fully use it, you'll need at least a 50-60A circuit for low end work -- and a 100A for running this thing at full capacity.