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					| DIN Categorisation of building materials 					 |  
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					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					 |  
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