fire rated aluminum tube or sheet

[gao7857]

Hi there,

I am looking for a fire rated aluminum tube or sheet metal that can pass fire test such as UL2196 or NFPA130 or NFPA502. I am not a metal person and after googling I could not find an answer. Please recommend a aluminum that can do this. Thanks. Or a treatment that can help aluminum tube/pipe to pass the fire test.

Gao

 

[gtaw]

Aluminum has a low melting temperature. It is only 1220 degrees F. This is less than half the melting temperature of iron, roughly 2800 degrees F.

Both metals loss strength as temperature rises. Aluminum loses strength at a lower temperature that carbon steel. As for a fire rating, wood is probably better because it chars whereas aluminum, it heats and fails. You might try protecting the aluminum structure, but still, it weakens rather quickly as temperature increases.

Experiments performed to determine the fire resistance of precast concrete show that the temperature of a gasoline fueled fire is on the order of 1600 degrees F. More than enough to melt the aluminum.

Best regards - Al

 

[gao7857]

Thanks Al. So there is no chance aluminum pipe/conduit can withstand the fire. The conduit is not a structural part though, as it only houses the cables.

gtaw (Structural)
10 Jun 15 14:34
Aluminum has a low melting temperature. It is only 1220 degrees F. This is less than half the melting temperature of iron, roughly 2800 degrees F.

Both metals loss strength as temperature rises. Aluminum loses strength at a lower temperature that carbon steel. As for a fire rating, wood is probably better because it chars whereas aluminum, it heats and fails. You might try protecting the aluminum structure, but still, it weakens rather quickly as temperature increases.

Experiments performed to determine the fire resistance of precast concrete show that the temperature of a gasoline fueled fire is on the order of 1600 degrees F. More than enough to melt the aluminum.

Best regards - Al