At ArcelorMittal Europe, we have an advanced knowledge regarding fire safety as we have developed a unique R&D team dedicated to Fire Engineering and solutions developments in order to propose high performance products and solutions:
- Our Metallic Coated Aluzinc® and Organic Coated Granite® are classified A1 Euro class, the best possible level, meaning non-combustible.
- Our composite floor product range like Cofrastra® and innovative combined sections and composite flooring system CoSFB are R120 fire resistant, without any additional fire protection.
We are continuously innovating new products and solutions and our expertise in fire engineering design concept could also enable architects and engineers to optimize building safety with competitive solutions, as demonstrated on multi storey car parks in most European countries.
Fire safety is one of the key requirements for construction. Each building has to ensure safety of its occupants in case of a fire; that means it must enable quick and easy detection and escape, but also strongly limit fire spreading.
Fire Resistance & Fire Reaction
In terms of fire safety, it is necessary to make a distinction between:
- Fire resistance (length of time for which the construction application limits spread in spite of the action of the fire)
- Fire reaction (how the material behaves and brings fuel to the fire and development of the fire)
Fire resistance indicates the amount of time, during a fire, a construction application (flooring, facade, structure, etc.) conserves its properties:
- R Classification: The construction application conserves, during the indicated time, its load-bearing capacities.
- RE Classification (formerly FP, Fireproof): in addition to R classification, the tested element must be resistant to flames and inflammable gases. The element prevents, for the indicated time, the spread of combustion gases and smoke on the non-affected compartments.
- REI Classification (formerly FS, Fire stop): in addition to RE classification, this classification limits the rise in temperature of the surface not exposed to the fire (Thermal Insulation) to 140°C (on average) and 180°C (maximum). The element prevents, for the length of time indicated, heat spreading from the non-affected side.
Fire reaction indicates the way the material behaves as a combustible:
- Combustibility corresponds to the quantity of heat emitted by complete combustion of the material (reference to calorific power) and Inflammability corresponds to the quantity of more or less inflammable gases emitted by the material under the action of a heat source.
- Construction materials and product are classified under “Euro classes » (classification recognized in all European Union member countries).
- The classification system (Euro classes) now takes two other criteria into account: smoke given off (S for smoke) plus potential projected burning droplets (D for drop or droplets).