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NOTE: This is an unformatted excerpt from our online fire protection training library.

Identifying Materials & Equipment

Temperature class markings or T-Codes are given in the following table

Table 500.8(C) Classification of Maximum Surface Temperature

Maximum Temperature Temperature Class (T Code) C° F°     450 842   
T1 300 572   T2 280 536   T2A 260 500   T2B 230 446   T2C 215 419   T2D 200 392   T3 180 356   T3A 165 329   T3B 160 320   T3C 135 275   T4 120 248   T4A 100 212   T5 85 185   T6
NOTE: This is an unformatted excerpt from our online fire protection training library.

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