Propane<\/h3>\n

Another fuel gas that can reach quite high temperatures. The maximum is around 2800\u00b0 C.\u00a0<\/p>\n

Compared to acetylene, the concentration of the flame is smaller, resulting in a larger HAZ and longer piercing time.<\/p>\n

The cutting speed is comparable, though.\u00a0<\/p>\n

The ratio of oxygen to propane is around 4.3:1. Thus, reaching the maximum temperature requires around 3.5 times more oxygen than oxy-acetylene cutting.<\/p>\n

Propylene<\/h3>\n

Propylene is fast catching up with acetylene in the extent of use for flame cutting.<\/p>\n

There are several reasons for that. Firstly, its rate of use – the same amount of fuel lasts five times more than acetylene. Also, propylene is actually quicker for cutting, producing less slag in the process.<\/p>\n

The flame temperature is around 2900\u00b0 C. The quickness advantage derives from the higher temperature of the secondary flame.<\/p>\n

MAPP<\/h3>\n

This is a mix of different hydrocarbons.\u00a0<\/p>\n

MAPP temperatures are lower than acetylene and the heating area is wider. So the piercing time is slower and the same applies to the cutting speed.<\/p>\n

There is, however, a good reason for using MAPP. And that is underwater jobs because MAPP is not as likely as others to dissolve to separate components in a marine environment.<\/p>\n

Natural Gas<\/h3>\n

The slowest one on the list for piercing and cutting. LPG, though, is quite readily available commercially and is therefore a good alternative to the other fuel gases here on the list.<\/p>\n","protected":false},"excerpt":{"rendered":"

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