Searching for Material that will cope with 2600F temp. 3

[Twitchy]

I work in a refinery that 'Roasts' ore. I am searching for a material that will cope with 2500 degF - 2700 degF temperature to use as our burner telltale tube. We had used 310 stainless steel but it could not cope with the constant high temperature. Can anyone recommend a material that we can source in a pipe shape that may cope under these conditions. Thanks.

 

[metengr]

Either a refractory metal, ceramic, or water-cooled metal tube to maintain lower metal temperatures.

http://www.steelforge.com/infoservices/matoverview/mo_refractory_metals.asp

 

[EdDanzer]

There is no metal that will work. There may be a ceramic material that would work.

 

[gfbotha]

TZM (Titanium-Zirconium-Molybdenum alloy) is rated up to 1400°C - it may just work in your case. One supplier is PLANSEE (see

http://www.plansee.com)

 

[RPstress]

Is pure tungsten not a candidate? Just curious.

 

[EdStainless]

I have used refractory metals, I would suggest that you look at ceramics.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection

http://www.trent-tube.com/contact/Tech_Assist.cfm

 

[stanweld]

Without coating the refractory metals will all oxidize at that temp. Diffusion coatings on refractory metals may provide the life expectancy required. These have been used in rocket engines.

I would go with Ed's advice and look at ceramics.

 

[davefitz]

you will also need to characterize the hot gases' content of sulphur , sodium, mercury, etc since some of these elements ( in a reducing atmosphere) may attack some ceramics.

 

[epoxybot]

Ceramics formed using Polysilazanes (an inorganic polymer) might be a way. I have seen some performance data at 1500C.

Try Kion Corp.

http://www.kioncorp.com/

They don't make ceramics, they make the silazane and can probably say one way or the other.