Designation
| Name |
The value |
| Designation GOST Cyrillic |
3Х2Н2МВФ |
| Designation GOST Latin |
3X2H2MBF |
| Transliteration |
3H2N2MVF |
| By chemical elements |
3Cr2Н2MoWV |
Description
3Х2Н2МВФ steel is used: for the manufacture of critical parts for extrusion tools with high strength properties and satisfactory plasticity after normalization and tempering: press stamps, needles, and other parts operating at elevated temperatures up to 500 °C.
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
V |
Mo |
W |
|
0.32-0.38 |
≤0.03 |
≤0.03 |
0.5-0.8 |
2-2.5 |
0.17-0.37 |
1.4-1.8 |
0.2-0.3 |
0.8-1 |
0.8-1.2 |
Chemical composition is not verified by NTD. Total verified brands for chemical compounds: 2906 of 3316.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d5, % |
HB, MPa |
| Forging cross-sections up to 700 mm. Normalization at 950-960 °C, air cooling + two-stage vacation at 550-580 °C, cooling with furnace (tangential samples) |
| ≥1300 |
≥1400 |
≥7 |
388-444 |
| ≥1000 |
≥1100 |
≥8 |
- |
| ≥950 |
≥1050 |
≥8 |
- |
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 |
| HB |
Brinell hardness number |
Technological properties
| Name |
The value |
| Weldability |
Steel difficult weldability. |
| Склонность к отпускной хрупкости |
Malosolone. |
| The temperature of forging |
Start - 1200 °C, the end of - 900 °C. |
| Flock-sensitive sensitivity |
Insensitive. |
