High temp, abrasion resistant mesh material?
High temp, abrasion resistant mesh material?
(OP)
Hello all,
I'm looking to find a material I could use for a wire mesh. The mesh is to be used in a boiler furnace space (operating temperature 650-820 C, dry environment) to screen flyash particles.
Our most recent attempt at these screens consisted of a 316 SS wire mesh, which failed quite miserably - I haven't had the opportunity to look at the actual mesh but I've been told that it underwent excessive scaling.
The original drawing states that a 321 SS mesh should be used, although some questions have been raised regarding the suitability of this too.
Does anyone have any experience which such screens, or can someone recommend a material? I guess the main criteria would be:
- high temperature resistance
- good abrasion resistance
- low cost
Inconel has also been suggested, although I'm a little concerned at the cost.
Any insight would be much appreciated.
Regards
I'm looking to find a material I could use for a wire mesh. The mesh is to be used in a boiler furnace space (operating temperature 650-820 C, dry environment) to screen flyash particles.
Our most recent attempt at these screens consisted of a 316 SS wire mesh, which failed quite miserably - I haven't had the opportunity to look at the actual mesh but I've been told that it underwent excessive scaling.
The original drawing states that a 321 SS mesh should be used, although some questions have been raised regarding the suitability of this too.
Does anyone have any experience which such screens, or can someone recommend a material? I guess the main criteria would be:
- high temperature resistance
- good abrasion resistance
- low cost
Inconel has also been suggested, although I'm a little concerned at the cost.
Any insight would be much appreciated.
Regards





RE: High temp, abrasion resistant mesh material?
RE: High temp, abrasion resistant mesh material?
My initial concern with 316 was that we were operating in the temperature region where sensitisation can occur, although I have been somewhat assured that this is not a major operating concern, because it isn't really a corrosive environment.
Keep the comments coming... much appreciated
RE: High temp, abrasion resistant mesh material?
Nick
I love materials science!
RE: High temp, abrasion resistant mesh material?
RE: High temp, abrasion resistant mesh material?
Spalling resistance is helped by minor amounts of rare earths. Avesta-Polarit makes grades based on this principle. Check out 253MA on their web page. If this problem weren't solvable we wouldn't have jet engines.
RE: High temp, abrasion resistant mesh material?
Stainless steels with greater chromium and nickel contents will raise your temperature capabilities. 309 (13Ni-23Cr, 1900F limit) stainless would be the least expensive upgrade followed by 310 (20Ni-25Cr, 2000F limit). RA 253 MA (11Ni-21Cr-Si-Ce-N, 2000F limit) is a good suggestion for abrasion. The cerium component helps the metal form a thinner scale that is less prone to spallation and less susceptible to damage and removal by abrasive particles. For this reason this alloy has been popular for pulverized coal burners adn fluid bed applications.
RE: High temp, abrasion resistant mesh material?
RE: High temp, abrasion resistant mesh material?
RE: High temp, abrasion resistant mesh material?
The grid dimensions are
1000 x 700 mm
3.15 diameter wire
10 mm aperture
woven
It sounds like the 253 MA might be the go, and failing that probably 310.
RE: High temp, abrasion resistant mesh material?
Thanks for the feedback but you did not tell us which alloy you tried.
Jesus is THE life,
Leonard
RE: High temp, abrasion resistant mesh material?
RE: High temp, abrasion resistant mesh material?
Maui
RE: High temp, abrasion resistant mesh material?
Made the final recommendation of 253 MA, and I believed the relevant store people have followed it though. Won't be put in service for some time though... We'll see how it goes.
thanks again everyone