NF P 92-501/NF992-501: M classification combustion test


1. Standard ¨CNF P 92-501/NFP92-501
NF P 92-501: Building materials- Reaction to fire tests, radiation test used for rigid material or flexible materials thickness more than 5mm.


2. Test method¡ªNF P 92-501/NFP92-501
Specimens of the product are mounted in an enclosed chamber at an angle of 45¡ã to the horizontal and exposed to thermal radiation (30kW/m2) on their lowest surface, the test duration 20 minutes.


The materials is classified M1 to M4 according to the q index
M1 - Non flammable                q < 2.5
M2 - Low flammability              q < 15
M3 - Moderately flammable     q < 50
M4¨Cflammable                         q¡Ý50

If specific, unusual, specimen behaviour is observed additional supplementary tests (NF P 92-504 or NF P 92-505) may be required. 


3. M Classification: M0-M4 (M0¡¢M1¡¢M1¡¢M2¡¢M3¡¢M4)
All rigid materials or flexible materials thickness more than 5mm.


4. NF P 92-501/NFP92-501 Other Standard:

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 92-503: Electrical burner test used for flexible materials thickness no more than 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 92-505: Dripping test with electrical radiator, used for melting materials
NF P92-506: Safety against fire, building materials, reaction to fire tests, Radiant panel test for flooring.
NF P92-507: Building-Construction and furnishing materials-Classification according to reaction to fire.
NF P92-512: Safety against fire, Buildings, Reaction to fire tests. Determination of the durability of the fire reaction (Classification of materials, test)


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