What is the maximum temperature for horn materials?
– Nirafon horns are made of SS2342 (AISI316) acid proof steal and in the higher temperature areas the mouth cone of the horn is usually made of G-X15-CrNiSi229. These materials can take the temperatures up to: SS2343 c. 1000˚C and G-X15-CrNiSi229 c. 1050˚C. The materials can take these temperatures in conditions where oxygen is present. The conditions where the horns are located oxygen is not usually present and the materials can take even higher temperatures. Also the horn is usually installed into an opening in membrane wall and the temperature near the wall is not as high as it is further away from the wall. – At Helsinki Energy Salmisaari power plant in Helsinki Finland the horns are located in a temperature area of 1400 degrees Celsius and have been there since 1999 and the mouth cones of the horn inside the boiler are still in perfect condition.
