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NFP92-503/NF P 92-503: M classification combustion test


1. Standard-- NFP92-503/NF P 92-503
NF P 92-503: Electrical burner test used for flexible materials thickness no more than 5mm

2. Test method—NFP92-503/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 - 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.
NFP92-506: Fire safety, Building materials, Reaction for fire tests, Radiant panel test for flooring
NFP92-507: Fire safety, Building materials, Construction and furnishing materials –Classification according to reaction to fire.


5. NFP92-503/NF P 92-503 requirement

NF P 92-503: Electrical burner test used for flexible materials thickness no more than 5mm.


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Address:16F Deying Mansion, No.118 Middle Jiangdong Road, Nanjing, Jiangsu,China  Tel:(+86) 25-8658 3475
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