The original MAPP gas production came to an end in 2008 as the sole plant making it discontinued the production. It is found that the oxygen flame of MAPP gas cylinders is not entirely appropriate for welding steel, due to the high concentration of hydrogen in the flame.Click to see full answer. Likewise, what happened MAPP gas?MAPP gas is widely regarded as a safer and easier-to-use substitute for acetylene. In early 2008, true MAPP gas production ended in North America when production was discontinued at the only remaining plant in North America that still manufactured it.Likewise, can you weld with MAPP gas? Types of Gas Welding However, MAPP torches provide a very hot flame, almost as hot as oxy-acetylene, and the gas can be used for industrial metal-cutting operations. MAPP should not be used for welding steel because the hydrogen in the gas mixture can result in brittle welds. Just so, what is MAPP gas used for? A MAPP (methylacetylene-propadiene propane) torch is a type of portable flame device that is used to heat various objects. A MAPP torch can get much hotter than a propane torch and therefore is very useful for various applications. MAPP torches are most often used for welding, soldering and brazing pipes.What is the difference between propane and MAPP gas?MAPP (AKA MAP-Pro) gas burns at a higher temperature than butane and propane. Propane is the next step up and can be used for tasks like loosening rusted bolts. MAP-Pro is used for the more robust jobs like soldering copper pipes and heat treating knives.