The different fire classes of aixFOAM sound absorbers

• Sound absorber without fire protection additive

  Acoustic absorbers without flare retardant additive are used wherever fire safety measures are not relevant. Depending on the location and application (proximity of electrical components, sockets, heaters, etc.), please decide whether you need sound absorbers with a fire protection additive. As a manufacturer of high quality sound insulation elements, we offer solutions in the various fire protection classes up to highly flame retardant acoustic elements according to DIN 4101 B1. In principle, we recommend that our customers ask an expert, architect or the planning authorities about this subject in order to prevent unintended use.

• DIN 4102 B1
  DIN 4102 defines the fire behaviour of construction materials and components. The classic standard assigned to building codes, which defines the degree of flammability of building materials and the fire resistance of components. Fire protection class B1 is the largest possible fire protection class that acoustic foam can achieve without the addition of non-mineral components. Acoustic foams with this fire protection class are self-extinguishing. These include our thermoset foams in the Architect Line or Engineer Line area in the online shop.

  The corresponding test standard can be downloaded here.

• C-s2, d0 to DIN EN 13501
  DIN EN 13501-1 is a European fire protection standard and differs from the German fire protection standard DIN 4102-1 in its test criteria. In DIN EN 13501-1, building materials and types of construction are tested with regard to their flammability and combustibility, their smoke development and their possible waste or drip behaviour in the event of fire. Both classifications are still in use, but only DIN EN 13501-1 is used for building materials approved after 2001. The classification according to C-s2, d0 identifies the aixFOAM absorbers as flame-retardant, with limited contribution to fire (C), with medium smoke development (s2) and without burning droplets within 600 seconds (d0).

  The data sheet is available for download here.

• DIN 4102 B2 (PUR-E++)
  DIN 4102 defines the fire behaviour of construction materials and components. The classic standard assigned to building codes, which defines the degree of flammability of building materials and the fire resistance of components. Fire protection class B2 materials are deemed to be normally flammable, but burn quite slowly.

  The corresponding test standard can be downloaded here.

• FMVSS 302 DIN 75200 (PUR-E+)
  Acoustic foams with fire protection class FMVSS 302 are mainly used in vehicle production and machinery construction. The rate of flame spread in the event of a fire was contained by adding flame retardants (4 inch/minute).

  The corresponding test standard can be downloaded here.

• UL94 HF1 (PUR-ES++)
  The UL 94, a test requirement for assessing fire properties of polymer materials, is one of the important requirements for the sale of electrical appliances and other electronic applications in the USA, Canada and Mexico. These acoustic foams are self-extinguishing and do not drip.

  The corresponding test standard can be downloaded here.

• FAR 25.853
  FAR 25.853 vertical burn test was carried out by the Lufthansa Technik laboratories in Hamburg and documented by Lufthansa Technik AG test certificate under test number 6040/2005. It is a Flammability Material Test Certificate FAR25.853 recognised by the Federal Aviation Office. Here, a sample is exposed to vertical flame with a Bunsen burner (800 °C) for 12 seconds. The flame must extinguish itself after 15 seconds and the flame must not spread more than 8 inches (203 mm).

  The corresponding test standard (test result aixFOAM Acoustic Foam) can be downloaded here.