Steel 20KH3MVF (ЭИ415)
Steel 15Kh5M (X5M)
30Cr3MA steel
30Kh3VA steel
Steel 25X5M
Steel 25Kh3MFA-A
Steel 25Kh3MFA (48TS-4)
Steel 25Kh2MFA (48TS-1)
Steel 25Kh2M1F (EI723)
Steel 25Х1МФ (ЭИ10)
Steel 20Х3МВФ (ЭИ415)
Steel 20Х1М1Ф1ТР (EP182)
Steel 18Kh3MV (EI578)
Steel 18Kh2MFA-A
Steel 18Kh2MFA (48TS-3)
15CrM Steel
Steel 15X5VF (X5VF)
Steel 15X5 (X5)
Steel 15Kh2MFA-A
Steel 15Kh2MFA (48TS-3-40)
Steel 13X9M (X9M)
Steel 13Х3Н3М2ВФБ (VKS-10)
12XM steel
Steel 12Kh8VF (1Kh8VF)
Steel 12X8 (1X8)
Steel 12Kh2MFA-A
Steel 12Х2МФА (48ТС-2)
Steel 12Kh1MF (12KhMF; 12KhMFA)
12MX steel
Steel 08Х16Н9М2
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Designation
Description
20KH3MVF steel is used: for the manufacture of rotors, discs, forgings, bolts, high pressure pipe for chemical apparatus, and hydrogenation plants, special fasteners and other parts operating at temperatures up to +540−560 °C; piping details with quenching in oil and tempering to the air; tubes for plants of chemical and petrochemical plants with nominal pressure PN=19.6−98 MPa (200−1000 kgf/cm2) nitrided parts of the aviation industry; billets of shafts and one-piece rotors stationary and transport steam turbines.
Note
The case hardening steel of pearlitic class.
Temperature intense scaling +600 °C.
Standards
Chemical composition
Fe is the basis.
According to GOST 20072-74, when steel is scrap-process, the content of Cu ≤ 0.30%. The presence of titanium is up to 0.030%. When smelting steel by the method of electroslag remelting, the mass fraction of sulfur should not be more than 0.015%.
According to TU 108-1029-81, the chemical composition is given for steel grade 20Х3МВФА (ЭИ415А). In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%.
According to TU 14-1-2090-77, the chemical composition is given for steel grade 20X3MVF (EI415). In steel grade 20Х3МВФ-Ш (ЭИ415-Ш) the sulfur content should not be more than 0,015%. If all the requirements of the specification are met, deviations in chemical composition are allowed in accordance with table 2 of GOST 20072. The content of residual elements is allowed: nickel - no more than 0.50% and copper - no more than 0.30%.
According to GOST 20072-74, when steel is scrap-process, the content of Cu ≤ 0.30%. The presence of titanium is up to 0.030%. When smelting steel by the method of electroslag remelting, the mass fraction of sulfur should not be more than 0.015%.
According to TU 108-1029-81, the chemical composition is given for steel grade 20Х3МВФА (ЭИ415А). In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%.
According to TU 14-1-2090-77, the chemical composition is given for steel grade 20X3MVF (EI415). In steel grade 20Х3МВФ-Ш (ЭИ415-Ш) the sulfur content should not be more than 0,015%. If all the requirements of the specification are met, deviations in chemical composition are allowed in accordance with table 2 of GOST 20072. The content of residual elements is allowed: nickel - no more than 0.50% and copper - no more than 0.30%.