BS476-6 Building Materials Fire Propagation Index Tester

BS476-6 Flame retardant fire test of building materials-standard analysis:
The BS476-6 method is used to compare the contribution of various materials to the formation of fire, and is mainly used to evaluate the fire protection performance of wall and ceiling linings. The measurement results are expressed by the flame propagation index.

Test principle

The BS 476-6 test method is a method for determining the flame propagation properties of materials. It is mainly used to evaluate the fire performance of wall and ceiling linings. The results are expressed in terms of flame propagation index. During the test, the test piece was exposed to a tube torch, and the heat release of the lamp was 530 J/m. After 2 minutes and 45 seconds of the test, the total power of the two electric heaters was adjusted to 1800 watts. When the test was performed for 5 minutes, the power was reduced to 1500 watts, and then the power was maintained until the end of the test. The total test time was 20 minute.

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