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Electrical laminates and ferritic heat transfer member

2025-06-19 07:244180下载
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This invention provides a ferritic heat transfer member (4) that is excellent in heat transfer characteristics and steam oxidation resistance properties, and a heat resistant ferritic steel (1) that is capable of realizing the ferritic heat transfer member (4). The heat resistant ferritic steel (1) includes a base material (2), and an oxidized layer A on the surface of the base material (2). The base material (2) has a chemical composition containing, in mass% : C : 0.01 to 0.3%, Si : 0.01 to 2.0%, Mn : 0.01 to 2.0%, Cr : 7.0 to 14.0%, N : 0.005 to 0.15%, and sol. Al : 0.001 to 0.3%, and one or more types of element selected from a group consisting of Mo, Ta, W and Re in a total amount of 0.5 to 7.0%, with the balance being Fe and impurities. An oxidized layer A includes a chemical composition containing, in mass% : Cr and Mn in a total amount of 20 to 45%, and one or more types of element selected from a group consisting of Mo, Ta, W and Re in a total amount of 0.5 to 10%.


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