Steel 18Х2МФА (48ТС-3)

Designation

Name The value
Designation GOST Cyrillic 18Х2МФА
Designation GOST Latin 18X2MFA
Transliteration 18H2MFA
By chemical elements 18Cr2MoV
Name The value
Designation GOST Cyrillic 48ТС-3
Designation GOST Latin 48TC-3
Transliteration 48TS-3
By chemical elements 48TiС-3

Description

18Х2МФА steel is used: for the production of workpieces in the form of forgings, sheets, sheet blanks, the sheet of stamped blanks, Cavanaugh-rolled billets (slabs), used for products of machinery and vessels, working under pressure and within the jurisdiction of the Gosatomenergonadzor.

Standards

Name Code Standards
Blanks. Of the workpiece. Slabs В31 TU 108.131-86

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu As V Mo Co
TU 108.131-86 0.16-0.21 ≤0.02 ≤0.02 0.3-0.6 2.5-3 0.17-0.37 ≤0.4 Rest ≤0.3 ≤0.04 0.25-0.35 0.6-0.8 ≤0.025
Fe is the basis.
According to TU 108.131-86, the chemical composition is given for steel grade 18X2MFA. In the chemical composition, deviations are allowed: carbon ± 0.010%, manganese, silicon, and vanadium ± 0.050% each, chromium ± 0.10%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Billet heat-treated in the delivery condition on the other 108.131-86
160-400 ≥430 540-735 ≥14 ≥50 ≥490 187-229
160-400 ≥390 ≥490 ≥14 ≥50 - -
160-400 ≥430 540-735 ≥14 ≥50 ≥490 187-229
160-400 ≥390 ≥490 ≥14 ≥50 - -
160-400 ≥530 635-835 ≥13 ≥50 ≥490 207-225
160-400 ≥490 ≥550 ≥12 ≥45 - -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number