Does Sheet Metal Burn

I m building for winter which is just around the corner.
Does sheet metal burn. When welding thin metal the main objective is to avoid warping burn through and excessive heat affected zones while still ensuring the weld has enough mechanical strength for the application. Thick pieces of iron conduct heat away. The burning process which is just rapid oxidation of the metal has to bring nearby iron to its ignition temperature fast enough to sustain a chain reaction. For example thermite is used to weld train rails together.
However there seems to be conflicting info regarding the use of galvanized sheet metal on the web in building a fire place or in use with a heat source. Thicknesses can vary significantly. Sheet metal penetrations are used in rated assemblies and when correctly fire caulked become part of that assembly. I lucked into some galvanized sheet metal heavy gage.
I m new to tig welding and just bought my first machine syncrowave 200 to do sheet metal body work on classic trucks. One sheet of 5 8 type x sheetrock has no fire rating. Learn why mig pulsed mig tig and pulsed tig are the ideal choices when welding sheet metal. Extremely thin sheets are considered foil or leaf and pieces thicker than 6 mm 0 25 in are considered.
When welding sheet metal the main thing to look out is to prevent warping and burn through. Sheet metal is one of the fundamental forms used in metalworking and it can be cut and bent into a variety of shapes countless everyday objects are fabricated from sheet metal. I need help getting a setup and with filling in holes. Help with sheet metal burn through 11 14 2008 07 05 pm.
Sheet metal is metal formed by an industrial process into thin flat pieces. I am not aware of a fire rated wall assembly using sheet metal. My current setup is dc at 40 amps 15 cfh argon and i m using a 040 red band electrode. But when it is used one on each side of a properly framed wall it can become a fire rated wall.
The fuel in thermite is the metal aluminum.