& Auml; BS 476-6 Fire resistance test for building materials - Standard Name:

& uuml; BS476-6: Fire Tests on Building materials and structures – Method of test for fire propagation for products

& uuml; BS476-6: Fire Retardant and Fire Testing of Building Materials and building Elements Test method for Flame propagation of products

& Auml; BS 476-6 Flame retardant and Fire testing of building materials - Overview of the standard:

BS 476-6 test results are expressed as flame propagation index to provide the measurement of flame generation of flat materials. BS 476-6 is mainly used to evaluate the flame retardant and fire resistance of indoor wall materials and ceiling accessories

& Auml; BS 476-6 Flame retardant and Fire testing of building materials - Standard Scope of Application:

& uuml; Interior wall material

& uuml; Insulation material

& uuml; Ceiling material

& Auml; BS 476-6 Flame retardant and fire test of building materials - Standard Analysis:

The ignition source of this method is 2 electric heaters and 1 tube burner. The combustion tube of the device is equipped with a chimney, and a thermocouple is installed in the chimney to measure the flue gas temperature. The power of the electric heater is adjustable and it is 45mm away from the vertically placed sample. The pipe diameter of the pipe burner is 9mm, there are 14 nozzles, the inner diameter of the nozzle is 1.5mm, and the center distance of each two mouths is 12.5mm. Apply a blowtorch flame 25mm above the bottom of the exposed surface of the specimen.

In order to evaluate the flame propagation performance of the tested material, the difference between temperature and room temperature in the chimney is continuously recorded with a thermocouple, and the obtained results (the relationship curve between temperature difference and time) are compared with the calibration curve.

Calculate the flame propagation index i value: the higher the I value, the lower the flame retardancy of the material.

& Auml; Other relevant test standards

& uuml; BS 476: Fire tests on building materials and structures

& uuml; BS 476-3: Fire tests on building materials and structures-Fire tests on exposed sections of roofs

& uuml; BS 476-4: Fire tests for building materials and structures - Tests for the non-ignitability of materials

& uuml; BS 476-5: Test method for ignitability of building materials

& uuml; BS 476-6: Fire testing of building materials and structures. Part 6: Test methods for the spread of fire in products

& uuml; BS 476-7: Fire testing of building materials and structures. Part 7: Test method for determining the surface spread classification of flame in products

& uuml; BS 476-11: Fire testing of building materials and structures. Part 11: Determination method of thermal radiation of building materials

& uuml; BS 476-12: Fire testing of building materials and structures. Part 12: Test method for flammability of articles in direct contact with flame

& uuml; BS 476-13: Fire tests on building materials and structures - Part 13: Method of test for the flammability of products exposed to thermal radiation

& uuml; BS 476-15: Fire tests on building materials and structures-Method of test for the heat release rate of products

& uuml; BS 476-20: Fire testing of building materials and structures. Part 20: Test methods for the fire resistance of elements of building (general principles)

& uuml; BS 476-21: Fire testing of building materials and structures. Part 21: Test methods for the fire resistance of load-bearing elements

& uuml; BS 476-22: Methods of fire test for non-loaded building elements

& uuml; BS 476-23: Fire testing of building materials and structures. Part 23: Test method for the contribution of components to the fire resistance of components

& uuml; BS 476-24: Fire testing of building materials and structures. Part 24: Test methods for fire resistance of ventilation ducts

& uuml; BS 476-31.1: Fire tests on building materials and structures-Method for measurement of smoke penetration through door and window assemblies. Measurement method at room temperature

& uuml; BS 476-33: Fire tests for building materials and structures - Physical indoor tests for surface products