Designation
| Name |
The value |
| Designation GOST Cyrillic |
3Х2МНФ |
| Designation GOST Latin |
3X2MHF |
| Transliteration |
3H2MNF |
| By chemical elements |
3Cr2MoНV |
Description
3KH2MNF steel is used: for the manufacture of large hammer stamps; stamps-containers; rings and bands; large inner sleeves; large solid stamps (with a side of square or diameter up to 600 mm) for forming forgings from structural steels and high temperature alloys hammers and crank presses (instead of less heat-resistant steel grades 5KHNM, 4KHMFS); tools (clamping and forming panels composing and forming punches) for the landing of structural steel and heat resisting alloys on horizontal forging machines (GCM); knives for hot cutting.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
GOST 4405-75 |
| Bars and shapes |
В32 |
GOST 5950-2000, GOST 14955-77 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5950-2000 |
0.27-0.33 |
≤0.03 |
≤0.03 |
0.3-0.6 |
2-2.5 |
0.1-0.4 |
1.2-1.6 |
Rest |
≤0.3 |
0.25-0.4 |
≤0.03 |
0.4-0.6 |
≤0.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Quenching in oil with 1040-1060 °C |
| 15 |
≥1300 |
≥1450 |
≥11 |
≥45 |
≥540 |
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 |
