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US 2003/0145916 A1Published application
12Cr Alloy steel for a turbine rotor
OwnerMasatomo Kamada, Masahiro Saito +2inventors
InventorsMasatomo Kamada, Masahiro Saito, Akitsugu Fujita, Yusaku Takano
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Abstract
A turbine rotor material, that has sufficient corrosion resistance and stress corrosion cracking resistance and appropriate strength and toughness in a good balance, and a manufacturing method thereof are provided. The turbine rotor material is a 12Cr alloy steel that contains: C of 0.01 to 0.10%, Si of 0.01 to 0.50%, Mn of 0.1 to 1.0%, Cr of 9 to 13%, Ni of 2 to 7%, Mo of 0.3 to 3%, N of 0.01 to 0.10%, all in weight percent, and remains of Fe and incidental impurities.
Claims17
A 12Cr alloy steel for a turbine rotor, containing:
- C of 0.01 to 0.10%, Si of 0.01 to 0.50%, Mn of 0.1 to 1.0%, Cr of 9 to 13%, Ni of 2 to 7%, Mo of 0.3 to 3%, N of 0.01 to 0.10%, all in weight percent, and remains of Fe and incidental impurities.
Dependencies are inferred from the claim text.