Steel 15Х2МФА-

Designation

Name The value
Designation GOST Cyrillic 15Х2МФА-А
Designation GOST Latin 15X2MFA-A
Transliteration 15H2MFA-A
By chemical elements 15Cr2MoVN-

Description

Steel 15Х2МФА AND 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 Sn Sb Co
TU 108.131-86 0.13-0.18 ≤0.015 ≤0.012 0.3-0.6 2.5-3 0.17-0.37 ≤0.4 Rest ≤0.1 ≤0.01 0.25-0.35 0.6-0.8 ≤0.005 ≤0.005 ≤0.025
Fe is the basis.
According to TU 108.131-86, the chemical composition is given for steel grade 15X2MFA-A. In the chemical composition, deviations are allowed: carbon ± 0.010%, manganese, silicon, and vanadium ± 0.050% each, chromium ± 0.10%. In steel, the total content of phosphorus, antimony, and tin should not be more than 0.015%. Additional determination of the content of zinc, lead and bismuth is carried out. The results of the determination are not delivery, but are recorded in the certificate. In steel, the determination of tungsten and boron is additionally carried out, the content of which should be: tungsten not more than 0.30% and boron no more than 0.0030%. For export deliveries, the content of these elements is a delivery, and for domestic deliveries it is not a delivery, but is entered in the certificate.

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
160-650 ≥430 540-735 ≥14 ≥50 ≥490 187-229
160-650 ≥390 ≥490 ≥14 ≥50 - -
160-650 ≥430 540-735 ≥14 ≥50 ≥490 187-229
160-650 ≥390 ≥490 ≥14 ≥50 - -

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