14. MATERIAL SELECTION GUIDE
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Application
Protection tube material
Cement
• Exit fues
Inconel 600, SS 446
• Kilns, heating zone
Inconel 600
Ceramic
• Kilns
Ceramic and silicon carbide
• Dryers
Silicon carbide, black steel
• Vitreous enamelling
Inconel 600, SS 446
Glass
• Fore hearths and feeders
Platinum thimbles
• Tanks roof and wall
Ceramic
• Flues and checkers
Inconel 600, SS 446
Paper
• Digesters
SS 316, SS 446
Petroleum
• Cracking lines
SS 316
• Dewaxing
SS 304, SS 316, SS 310, SS 321
• Towers
SS 304, SS 316, SS 310, SS 321
• Transfer lines
SS 304, SS 316, SS 310, SS 321
• Bridge wall
Inconel 600
Power
• Coal-air mixtures
SS 304
• Flue gases
Black steel, SS 446
• Pre heaters
Black steel, SS 446
• Steam lines
SS 347, SS 316
• Water lines
Low carbon steel
• Boiler tubes
SS 304, SS 310
Gas producers
• Producer gas
SS 446
• Water gas
: - carburettor
Inconel 600, SS 446
- super heater
Inconel 600, SS 446
Incinerators
: - up to 1,093 °C
Inconel 600, SS 446
- over 1,093 °C
Ceramic, silicon carbide (secondary)