Steel 10Х9МФБ (ДИ82)
Designation
Description
10Х9МФБ steel is used: for the manufacture of billets intended for the manufacture of seamless cold, warm, hot-wrought, including hot-pressed and hot-pressed reduced pipes for steam boilers and pipelines, installations with high and supercritical steam parameters and steam generator tubes of nuclear power plants.
Note
High-chromium steel of the martensitic class.
Standards
Chemical composition
Fe is the basis.
According to TU 14-3P-55-2001, the chemical composition is given for steel grade 10X9MFB; in the steel grade 10X9MFB-SH the mass fraction of sulfur is ≤ 0.015%. A technological addition of rare earth elements is possible to improve the quality of the metal. The content of residual elements is in accordance with GOST 5632. In steel 10X9MFB and 10X9MFB-III, it is introduced by calculation of ferrosilicon or mischmetal by 0.05% cerium, silicocalcium by 0.05% calcium and chemical analysis is not determined.
According to TU 14-1-4607-89 the chemical composition is given for steel grade 10Х9МФБ-Ш (ДИ82-Ш). Before the release into the metal, ferrosilicon or misch metal is injected with 0.050% Ce (cerium) by calculation. In the ladle, SiCa (silicocalcium) is added to 0.050% Ca. In the steel deviations from the specified standards of chemical composition are allowed: for carbon ± 0.010%, for silicon +0.10%, for phosphorus +0.0050%, for molybdenum ± 0.050%, for niobium ± 0.030%, for chromium ± 0.10 %, for manganese +0.20%, for vanadium ± 0.030%. The content of residual elements must comply with GOST 5632.
According to TU 14-1-4616-89 the chemical composition is given for steel grade 10Х9МФБ-Ш (ДИ82-Ш). In the steel grade 10X9MFB (DI82) the sulfur content is not more than 0.025, the content of the remaining elements is the same. Before the release into the metal, ferrosilicon or misch metal is injected with 0.050% Ce (cerium) by calculation. In the ladle, SiCa (silicocalcium) is added to 0.050% Ca. In the steel, deviations from the specified standards of chemical composition are allowed: for carbon ± 0.010%, for silicon +0.10%, for molybdenum ± 0.020%, for niobium ± 0.030%, for chromium ± 0.10%, for manganese +0.20 % by vanadium ± 0.030%. The content of residual elements must comply with GOST 5632.
According to TU 14-3P-55-2001, the chemical composition is given for steel grade 10X9MFB; in the steel grade 10X9MFB-SH the mass fraction of sulfur is ≤ 0.015%. A technological addition of rare earth elements is possible to improve the quality of the metal. The content of residual elements is in accordance with GOST 5632. In steel 10X9MFB and 10X9MFB-III, it is introduced by calculation of ferrosilicon or mischmetal by 0.05% cerium, silicocalcium by 0.05% calcium and chemical analysis is not determined.
According to TU 14-1-4607-89 the chemical composition is given for steel grade 10Х9МФБ-Ш (ДИ82-Ш). Before the release into the metal, ferrosilicon or misch metal is injected with 0.050% Ce (cerium) by calculation. In the ladle, SiCa (silicocalcium) is added to 0.050% Ca. In the steel deviations from the specified standards of chemical composition are allowed: for carbon ± 0.010%, for silicon +0.10%, for phosphorus +0.0050%, for molybdenum ± 0.050%, for niobium ± 0.030%, for chromium ± 0.10 %, for manganese +0.20%, for vanadium ± 0.030%. The content of residual elements must comply with GOST 5632.
According to TU 14-1-4616-89 the chemical composition is given for steel grade 10Х9МФБ-Ш (ДИ82-Ш). In the steel grade 10X9MFB (DI82) the sulfur content is not more than 0.025, the content of the remaining elements is the same. Before the release into the metal, ferrosilicon or misch metal is injected with 0.050% Ce (cerium) by calculation. In the ladle, SiCa (silicocalcium) is added to 0.050% Ca. In the steel, deviations from the specified standards of chemical composition are allowed: for carbon ± 0.010%, for silicon +0.10%, for molybdenum ± 0.020%, for niobium ± 0.030%, for chromium ± 0.10%, for manganese +0.20 % by vanadium ± 0.030%. The content of residual elements must comply with GOST 5632.