What materials are used for high-pressure superheated steam?
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What material is suitable for superheated steam at 11 MPa and 540 degrees? It is used for air heaters, where the air needs to be heated to 280 degrees.
This post was last edited by FMSD on 2018-1-12 at 11:30. It is of course heat-resistant steel; domestically, chromium-molybdenum steel is available, while imported options include materials such as P91 and T91. For more details, refer to DLT 5054-2016, the Design Code for Steam and Water Pipelines in Thermal Power Plants
First of all, it is necessary to meet the requirements of ~~GB5310; choosing 12Cr2MoVG meets these requirements. The temperature resistance limit of 15CrMoG is slightly lower.
Thank you, I’m learning *. Why not use stainless steel?
Thank you, I’m learning * right now! Why is stainless steel not recommended?
Just take a look at the elastic moduli and allowable stresses of stainless steel and heat-resistant steel at this temperature, and you’ll know
Newly installed boilers mostly use P91.
Newly installed boilers mostly use P91.