I knew Mapp gas was hotter but never looked up how much. Not a on I see. One site says Mapp is 3160° and another says 3730°. Who do you believe? LOL
"MAP-Pro gas burns at a temperature of 3,730 degrees Fahrenheit, while propane burns at 3,600 F. Because it heats copper faster and to a higher temperature, MAP-Pro gas is a superior alternative to propane for soldering. If you opt to use it, the manufacturer recommends using a specially designed torch''