NF P92-504 Combustion Flame Propagation Rate Test - Standard Name
NF P 92-504: speed of spread of flame test used for the materials which are not intended to be glued on a rigid substrate.
NF P 92-504: Fire safety — Buildings — Tests on the response of buildings to fire — Fire resistance tests and flame spread rate tests.
NF P92-504 Combustion Flame Propagation Rate Test - Standard Overview
NF P 92-504 is used to determine the flame propagation rate of materials placed horizontally. This method is also suitable for materials that melt quickly without burning in other tests or tests, or that cannot reach M1~M3 .
If during the NF P 92-501 and NF P 92-503 tests, if the material does not burn, or the burning time is less than or equal to 5 seconds, but holes appear, the test material needs to be tested for fire resistance before it can be tested. Classification. Comprehensive evaluation of the M- level combustion performance of the material . During this fire resistance test, the flame lasted no more than two seconds, and no burning droplets occurred.
NF P92-504 Combustion Flame Propagation Rate Test - Test Requirements
NF P 92-504 test process requirements: Place the sample horizontally (that is, the long side is horizontal and the short side is perpendicular to the horizontal). Markings are made at 50mm and 300mm respectively from the free end . Use a gas Bunsen burner to apply a flame during the test. at the free end. If it is the open burning time of the test sample, apply the fire source from the free end 10 times, 5S each time; if it is the flame propagation rate of the test sample, extend the time of applying the fire source to 30S , and measure the flame propagation between the two marking lines. During the time t , the flame propagation rate is calculated according to the formula V=250/t , and the material is classified based on this.
NF P92-504 Combustion Flame Propagation Rate Test - Sample Requirements
Rigid material: 460 mm x 230mm x thickness
Non-rigid material: 70mm x 70mm x thickness
NF P92-504 Combustion Flame Propagation Rate Test - M Level Related Test Standards
NF P 92-501: Building materials- Reaction to fire tests, radiation test used for rigid material or flexible materials thickness more than 5mm.
NF P 92-501: Fire reaction test of building materials — Thermal radiation test on hard materials of various thicknesses or soft materials with a thickness exceeding 5 mm .
NF P 92-503: Electrical burner test used for flexible materials thickness no more than 5mm
NF P 92-503: Test of fire response characteristics of building materials - Test using electric spray gun on soft materials with thickness less than or equal to 5mm .
NF P 92-504: speed of spread of flame test used for the materials which are not intended to be glued on a rigid substrate.
NF P 92-504: Fire safety — Buildings — Tests on the response of buildings to fire — Fire resistance tests and flame spread rate tests.
NF P 92-505: Dripping test with electrical radiator, used for melting materials.
NF P 92-505: Fire safety — Buildings — Tests on the response of buildings to fire — Tests on hot melt materials : droplet test.
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