The 45 degree burner is applicable to ASTM D2863, ASTM D3835, ISO 4589-2, GB/T 2641-2008, GB/T 17591-1998 and other standards

It is used to measure the flame spread rate of a material, which is an important factor in determining its fire safety. The principle behind the 45 degree burner test is that when a flame is applied to a material at an angle of 45 degrees, it will spread across the surface at a certain rate. This rate can then be used to compare different materials and determine their relative flammability. The test procedure for the 45 degree burner involves placing a sample of the material to be tested on a flat surface and then applying a flame from an adjustable angle of 45 degrees for 10 seconds. The flame should be adjusted so that it covers an area of approximately one square inch. After 10 seconds, the time taken for the flame to spread across the entire sample should be recorded. This time can then be compared with other samples and used as an indication of relative flammability. In addition to measuring flame spread rate, the 45 degree burner can also be used to measure smoke production and heat release rates from burning materials. These measurements are important for assessing fire safety in buildings and other structures where smoke inhalation or high temperatures can cause injury or death. Overall, the 45 degree burner test is an important tool for assessing fire safety in various materials and structures. It provides valuable information about how quickly flames will spread across different surfaces, as well as how much smoke and heat they will produce when burning.

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