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NF P 92-503: M classification combustion test
1. Standard-- NF P 92-503
NF P 92-503: Electrical burner test used for flexible materials thickness no more than 5mm
2. Test method—NF P 92-503
A specimen in placed in a specimen holder at 30° above a radiator which gives out heat(30kW/m²). A small butane flame is applied directly to the fabric surface. The following aspects are recorded:
- duration of the flame
- production of burning droplets
- length/width of the damaged specimen
If specific, unusual, specimen behaviour is observed additional supplementary tests NF P 92-504 & NF P 92-505) may be required.
3. M Classification: M0-M4(M0、M1、M2、M3、M4)
|
Method |
Classes |
||||
|
NF P 92 - 505 |
- |
No ignition of the wool |
No ignition of the wool |
Ignition of the wool |
Ignition of the wool |
|
NF P 92 - 503 |
No droplets |
Not-burning droplets |
Burning droplets |
Not-burning droplets |
Burning droplets |
|
Ignition time =< 5s |
M1 |
M1 |
M2 |
M4 |
M4 |
|
Ignition time > 5s; damaged length < 350mm |
M2 |
M2 |
M3 |
M4 |
M4 |
|
Ignition time > 5s; damaged length between 450mm and 600mm; damaged width < 90mm |
M3 |
M3 |
M4 |
M4 |
M4 |
|
NF P 92 - 504 |
- |
- |
M4 |
M4 |
M4 |
4.Other Standard of M classification
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.
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