Material selection issues for pressure vessels at temperatures above 1000℃
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I need to design a pressure vessel with a design pressure of 0.6 MPa, using an infrared electric heater to heat steam to superheated steam at 1000°C. 1. The user said 310S should be used. After checking relevant information, it becomes unavailable above 825°C; however, many sources state that it can be used at temperatures above 1000°C. At such temperatures, the service stress is very low – it’s 1.5 MPa at 825°C – so isn’t the thickness too large? ? ? 2. Can Incoloy 825 nickel-based alloy be used? Where can the allowable stress be found? I posted a thread earlier, but it didn’t get much response, so I’m posting it again.
At 1000 degrees, not only the allowable stress but also creep must be taken into consideration; check the specifications for heating furnaces
If the temperature of the steel used for pressure vessels does not exceed 1000°, then steel intended for boilers should be considered.