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DIN Categorisation of building materials
DIN Categorisation of building materials

Materials can be tested for the degree of flammability and combustibility in accordance with DIN 4102. The following are the categories in order of degree of combustibility as well as flammability:

A1 100% noncombustible = nichtbrennbar

A2 ~98% noncombustible = nichtbrennbar

B1 difficult to ignite = schwer entflammbar

B2 normal combustibility (like wood)

B3 easily ignited = leichtentflammbar
Last update on 2008-01-29