Steel 15Х2МФА-
Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Х2МФА-А |
| Designation GOST Latin |
15X2MFA-A |
| Transliteration |
15H2MFA-A |
| The 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 |
| Bulls. Blanks. 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 |
The 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 characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, 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 |
| Section |
Section |
| 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 |
