Crane Heat Shield Material

[waytsh]

Hi All,

What grade of steel would be appropriate for use in a high heat condition like this? I am told that for short periods the temperature can reach 1,000 degrees Fahrenheit. For the chain links that will be supporting the shield I have a catalog which gives reductions in the working load of the chain and it looks like the reductions can be significant. I was initially hoping to use A36 plate material but now I am wondering if that is going to be appropriate for this application. I would appreciate any input.

Thanks.

 

[JStephen]

I'm not familiar with your application. If the material is going to be significantly stressed at that temperature, there are better materials. If it just needs to be in place, A36 might work. The ASME Boiler and Pressure Vessel Code gives allowable stresses of different materials across a range of temperatures that might be useful. You might also check in the Boiler and Pressure Vessel Engineering subforum, where high-temperature applications are more common.

 

[ACtrafficengr]

Have you considered thermal properties? The emissivity and absorbtivity of steel varies widely depending on polish or oxidation.

"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928