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Steel 10Х2М1ФБ (48ТН-2)

Steel 10Х2М (48ТН-1; 12Х2М) Steel 10Х2М1ФБ (48ТН-2) Steel 10Х2МФБ (ЭИ531)

Designation

Name The value
Designation GOST Cyrillic 10Х2М1ФБ
Designation GOST Latin 10X2M1FB
Transliteration 10H2M1FB
The chemical elements 10Cr2Mo1VNb
Name The value
Designation GOST Cyrillic 48ТН-2
Designation GOST Latin 48TH-2
Transliteration 48TN-2
The chemical elements 48TiН-2

Description

10Х2М1ФБ steel is used: for the manufacture of billets and vessels for nuclear power plants.

Note

Steel high-temperature alloy.

Standards

Name Code Standards
Metal forming. Forgings В03 TU 108.11.934-87
Bulls. Blanks. Slabs В31 TU 14-1-3119-81, TU 14-1-789-73
Sheets and stripes В33 TU 14-1-3409-82

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo Nb
TU 108.11.934-87 0.08-0.12 ≤0.02 ≤0.02 0.3-0.6 2-2.5 0.17-0.37 ≤0.3 The rest ≤0.25 0.25-0.35 ≤0.1 0.8-1 0.25-0.45
Fe is the basis.
According to TU 108.11.934-87, the chemical composition is given for steel grade 10Х2М1ФБ-ВД.
According to TU 14-1-3119-81 for steel grade 10X2M1FB, deviations in chemical composition are allowed: for carbon -0.010%, for molybdenum ± 0.050%, for vanadium ± 0.050%. The content of impurities of non-ferrous metals (tin, arsenic, lead, zinc, antimony, bismuth) should not exceed the 1 st point of a ten-point scale of spectral analysis. The content of residual elements in steel should be in accordance with GOST 5632.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2
After the main heat treatment (specimens for forgings: longitudinal, cross)
≥195 ≥345 ≥20 ≥55 ≥785
≥145 ≥245 ≥13 - -
≥245 ≥390 ≥20 ≥50 ≥785
≥215 ≥290 ≥13 - -
≥195 ≥295 ≥13 - -
≥245 ≥390 ≥20 ≥50 ≥785
≥215 ≥275 ≥13 - -
≥185 ≥265 ≥13 - -
≥175 ≥245 ≥15 - -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

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