EN 469 (published 1995)
|Resistance to heat and flame||Additional requirements|
|EN 532 : Limited Flame Spread||ISO 5081 : Tensile strength|
|EN 367 : Heat transfer (flame)||ISO 4674 Methode A2 : Tear strength|
|EN 366 Methode B : Heat transfer (radiation)||ISO 4920 : Surface wetting|
|EN 366 Methode A : Residual strength of material when exposed to radiant heat||ISO 5077 : Dimensional change|
|EN 469 Annex A : Heat resistance||EN 368 : Penetration by liquid chemicals|
|ISO 811 : Hydrostatic pressure|
|ISO 11092 : Water vapour resistance|
EN 531 might be of interest for example for station uniforms.
EN 532 : Limited Flame Spread
EN 532 measures the flammability of the material : the surface ignition lasts 10 seconds.
Afterflame time < 2 sec.
Afterglow time < 2 sec.
No flaming to top or either side edge of specimen
No hole formation
No flaming or molten debris
EN 367 : Heat transfer (flame)
EN 367 measures the rate at which materials transmit convective heat from one side of the material to the other, by evaluating the time for temperature to rise to level of pain (HTI12) and 2nd degree burns (HTI24). The incident heat flux is 80 kW/m² .
HTI24 > 13 sec.
(HTI24 - HTI12) > 4 sec.
EN 366 Method B : Heat transfer (radiation)
EN 366B measures the rate at which materials transmit radiant heat from one side of the material to the other, by evaluating the time for temperature to rise to level of pain (t1) and 2nd degree burns (t2). The incident heat flux is 40 kW/m² .
t2 > 22 sec.
(t2 - t1) > 6 sec.
Transmission factor < 60%
EN 366 Method A : Residual strength of material when exposed to radiant heat
EN 366A is a test procedure used to evaluate the potential resistance of materials to tearing after exposure to a radiant heat. The incident heat flux is 10 kW/m².
Tensile strength of outermost layer > 450 N (see ISO 5081)
EN 469 Annex A : Heat resistance (hot air shrinking)
EN 469A gives an indication of the fabric stability following an exposure to high air temperatures. The material is suspended in an oven for 5 min at 180-190°C.
Shrinkage < 5%
ISO 5081 : Tensile strength
ISO 5081 gives an indication of the fabric stability under high tension : it is a measure of the force required to break a fabric in two pieces.
Tensile strength of the outer material > 450 N warp and weft.
ISO 4920 : Surface wetting
ISO 4920 gives an indication of the resistance to penetration by water spray representative of rainwater or shower proofness.
Spray rating of the outer material > 4
ISO 5077 : Dimensional change
ISO 5077 measures the shrinkage and/or the stretching following laundering or dry cleaning.
Dimensional change of the materials of the outer garment assembly < 3%, warp and weft.
EN 368 : Penetration by liquid chemicals
EN 368 gives the resistance of materials to penetration by liquid chemicals such as strong acids or alkalis :
a. concentrated aqueous alkali 40% NaOH at 20°C
b. acids at 20°C : 36% HCl and 30% H2 SO4
c. white spirit
Run off > 80%
No penetration to the innermost surface