BS 476-7 Surface Spread Flame Tester

BS 476-6–Flame Propagation Test of Building Materials

The disasters that fires bring to the people are endless, ranging from crippling to death. Not only does it harm lives, it can also destroy buildings and disrupt commercial trade. Therefore, fire protection measures for products and materials are urgent. Fire protection of products and materials can be achieved in many ways.

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

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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