Leadership

Ignition Temperature of Wood

Issue 11 and Volume 102.

Ignition Temperature of Wood Wood placed in an oven at 700°F. catches fire almost immediately. At oven temperatures of 450°-500°F., the wood gradually chars and usually ignites after several hours. “Pyrophoric carbon,” formed when wood slowly chars, absorbs and combines rapidly with oxygen. This produces heat which under certain conditions causes the charred wood eventually to catch fire at temperatures well below those required to ignite the original wood. Cases are recorded where wooden flooring in contact with steam pipes at 250°-300°F. has caught fire after years of EXPOSURE.-FACTORY MUTUAL RECORD.

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