Specialist in the machining of thermoplastics and thermosets

French Fire Classification of Materials

French M classification composed of 6 categories which defines the reaction of materials to fire :

 

M0 – incombustible

M1 – non-flammable

M2 – low flammability

M3 – moderately flammable

M4 – easily flammable

M5 – highly flammable

 

A material is M0 classified if it meets the following conditions :

- no effective inflammation on the radiant test, or the material meets the M1 classification requirements on the electric burner

- its higher (gross) calorific value (HCV) is lower or equal to 2,5 MJ/kg (600Kcal/kg)

 

This system will disappear because of the implementation of the construction product directive, which imposes the CE marking on these products. The European classification system called Euroclass will replace it.