Designation
| Name |
The value |
| Designation GOST Cyrillic |
12ГН2МФАЮ |
| Designation GOST Latin |
12GH2MFAJu |
| Transliteration |
12GN2MFAYu |
| By chemical elements |
12MnН2MoVNAl |
Description
12ГН2МФАЮ steel is used: for the manufacture of metal span structures of large bridges; parts of pressure pipeline HPP; parts of excavators.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
TU 14-1-5241-93 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
As |
Al |
V |
Mo |
| TU 14-1-5241-93 |
0.09-0.16 |
≤0.035 |
≤0.035 |
0.9-1.3 |
≤0.5 |
0.4-0.6 |
1.4-1.7 |
Rest |
≤0.3 |
0.02-0.03 |
≤0.03 |
0.05-0.01 |
0.05-0.1 |
0.1-0.25 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
KCU, kJ/m2 |
| Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse, KCU-70 °C) |
| 10-40 |
590-785 |
690-880 |
≥14 |
≥294 |
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 |
| KCU |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. |