Last updated April 6, 2005.
Flame temperature is not as simple as it sounds. It depends on many factors, such as:
Sites discussing practical welding and similar tasks tend to give much lower numbers than science-oriented sites, probably because of rapid heat loss in typical use. A number of sites warn that measurements done with thermocouples can be wildly inaccurate. More definitive information is available in the North American Combustion Handbook.
As a general practical guideline, consider one site's list of these heats for their jewelers' (gas/oxygen) torch:
For their fuel/air torch they list:
For more theoretical/ideal values, consider this table (which also includes a few temperatures other than for gas/oxidixer mixtures):
|Fuel and Oxidizer type||Temperature (Celsius)|
|Cigarettes - unventilated conditions||288|
|Cigarettes - ventilated||400-780|
|Cigarettes - insulated and smoldering||510-621|
|Tungsten halogen light||600-900|
(most organics are about here))