Temperature Calculation in Fire Safety Engineering by Ulf Wickström

Author:Ulf Wickström
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

8.1 Ignition Temperatures of Common Solids

Combustible solids may ignite due to piloted ignition, or auto-ignition (also called spontaneous ignition). The piloted ignition temperature of an externally heated substance is the surface temperature at which it will ignite in a normal atmosphere with an external source of ignition, such as a small flame or spark, present. Most common materials then ignite in the range of 250–450 °C. The auto-ignition temperature is the corresponding temperature at which a substance will spontaneously ignite without a flame or spark present. It is considerably higher, normally exceeding 500 °C.

Some limited amount of relevant material data are given in Table 8.1 for some liquids and in Table 8.2 for some plastics.Table 8.1Critical temperatures of some liquids

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