Fire testing-Germany Standard: DIN4102-1
DIN 4102-1 fire test to building material – Test Method：
When the material s fire behaviour has been determined in accordance with the standard, it divides into:
| Building material class | Designation | |
| Class A | A1 | Non-combustible materials |
| A2 | ||
| Class B | B1 | Not easily flammable |
| B2 | Flammable | |
| B3 | Easily flammable |
Class A
> A1: Materials may be classed as A1 materials if they:
– Pass the test specified according the standard corresponding parts
– meet the requirements for class A2 materials
> A2: Materials may be classed as A2 materials if they:
– Pass the test specified according the standard corresponding parts
– Pass the test specified DIN 4102-16
> B1: All materials, except flooring, may be classed as B1 materials if they
– Withstand the test specified in DIN 4102-16 using the ‘Brandschacht’ apparatus specified in DIN 4102-15
– Meet the requirements for class B2 materials.
> B2: Materials may be classed as B2 materials if they
– Pass the test specified according the standard corresponding parts
– Flooring materials may be assigned to material class B2 if they meet at least the requirements for class T-b as in DIN 66081.
> B3: Combustible materials which cannot be classed as B1 or B2 materials shall be classed as B3 materials