This paper discusses the materials properties of candidate water wall materials for USC boiler with 700°C steam parameter, and analyzes the serviceability of water wall panels made of different tubes, such as T12, 12Cr1MoVG, T23, T24, T91, T92, T122(HCM12A), VM12, 617 and 617 mod. In addition, some suggestions and optimization measures on the material selection have been proposed.

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