Aluminium Sheet Fire Rating

3 the oxide film can form under very low pressures of oxygen approx.

Aluminium sheet fire rating.

The narrow aluminum profiles allow unlimited areas of glazing in interior and exterior fire separations. Specifications methods to determine fire resistance ratings for generic designs can be found in most building codes e g chapter 7 fire resistance rated construction international building code international code council falls church va 2003. Aluminium and fire 2 aluminium is 80 to 90 compared with 5 for painted steel and 25 for stainless steel. Uk aluminium industry fact sheet 11.

Fire ratings of 45 120 minutes patented system features extruded aluminum framing with crisp edges and narrow sightlines custom aluminum face caps available to meet project needs easy installation requirements. Defined by bs476 part 4 aluminium alloys are non combustible part 7 surface spread of flame class 1 and part 6 fire propagation class 0. Impossible to set fire to aluminium cooking foil 6 to 7 microns thick with any type of flame. Ratings are assigned in levels from 1 to 8 with a level 8 rating being the highest able to stop a 7 62mm rifle lead core full metal copper jacket military ball.

Chapter 8 fire resistive materials and construction nfpa 5000 building construction and safety code nfpa quincy ma 2006. 1 millibar and less and at high speeds of the order of 1 millisecond. So when aluminium is exposed to fire its large thermal conductivity allows it to quickly dissipate large amounts of heat from the flame and absorb even more thermal energy from the centre of the fire cooling the environment and restricting very hot spots. Aluminium s extremely high reflectivity compared to iron aluminium ranges between 80 to 90 and 5 to 25 for iron to stainless steel allows for better resistance to thermal radiation of fire.

The attached photograph is a good example of the behaviour of aluminium in the massive form in a fire. This explains why the machining and sawing of. Aluminium structures have low fire resistance because of the low melting temperature of the alloy but aluminium is reflective and has a more than a twice lower surface emissivity compared with. A car with aluminium alloy wheels was.

This is of considerable benefit and will assist in prolonging endurance of an aluminium structure in a fire.