Does a magnet stick to galvinied steel?
I've welded galvanized steel before and the fumes were not nice. He should be okay, but stay in a ventilated place with a fan blowing fresh air on his face and try brushing some of the coating off with a wire brush before welding.
I will assume your magnet is a relatively strong one. Virtually all galvanized steel sheet is magnetic. Both galvanized iron and steel are magnetic
yes it does. The steel below the galvanized coating still has a relative high carbon content and magnets stick to it. Magnets do not stick to stainless steel very well though. There is a weak attraction there. If I recall correctly this is due to the relatively low carbon content and the higher content of chromium.
It may have been galvanized steel but if it is now rusted, the galvanizing material has been consumed. galvanizing is a zinc layer that can be hazardous if welded. Rust is an electrochemical reaction and the zinc coating will rust away prior to the steel. if the steel is now rusting, the zinc is gone and should no longer be any more hazardous than any other welding job.
