Designation
| Name |
The value |
| Designation GOST Cyrillic |
12ХГДАФ |
| Designation GOST Latin |
12XGDAF |
| Transliteration |
12HGDAF |
| By chemical elements |
12CrMnCuNV |
Description
12ХГДАФ steel is used: for the manufacture of welded offshore steel structures.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
TU 14-1-4329-87, TU 14-1-4685-89, TU 14-1-5241-93 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
Cu |
N |
V |
| TU 14-1-5241-93 |
0.09-0.15 |
≤0.03 |
≤0.03 |
0.6-1 |
0.8-1.1 |
0.17-0.37 |
Rest |
0.25-0.5 |
0.02-0.03 |
0.07-0.12 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| Rolled plates as supplied by TU 14-1-5241-93, THE 14-1-4685-89 (samples transverse) |
| 30-50 |
≥325 |
≥470 |
≥20 |
| 8-30 |
≥345 |
≥490 |
≥20 |
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 |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. |