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Temperature Classes

Release time:

2020-12-21

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[Summary Description] The ignition temperature of an explosive substance is the limit temperature at which it can be ignited. It can be classified into T1-T6 Classes based on the maximum allowable surface temperatures of explosion proof equipment. The specification between temperature classes, surface temperatures on equipment and ignition temperature of combustible material is as follows.

The ignition temperature of an explosive substance is the limit temperature at which it can be ignited. It can be classified into T1-T6 Classes based on the maximum allowable surface temperatures of explosion proof equipment. The specification between temperature classes, surface temperatures on equipment and ignition temperature of combustible material is as follows.

Temperature Classes IEC/EN/GB3836	Maximum Surface Temperature T（℃）	Ignition Temperature of Combustible Material （℃）
T1	450	T >450
T2	300	450≥T>300
T3	200	300≥T>200
T4	135	200≥T>135
T5	100	135≥T>100
T6	85	100≥T>85