Designation
| Name |
The value |
| Designation GOST Cyrillic |
4Х4ВМФС |
| Designation GOST Latin |
4X4BMFC |
| Transliteration |
4H4VMFS |
| By chemical elements |
4Cr4WMoVС |
| Name |
The value |
| Designation GOST Cyrillic |
ДИ22 |
| Designation GOST Latin |
DI22 |
| Transliteration |
DI22 |
| By chemical elements |
CuИ22 |
Description
4KH4VMFS steel is used: for the manufacture of tools of high-speed punching machine, landing on horizontal forging machines; inserts of dies for hot deformation of alloy structural steel and heat-resistant alloys hammers and crank presses (instead of less heat-resistant steel grades 4KH5V2FS, 4KH5MF1S, 4KH3VMF); molds of pressure casting of copper alloys.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
GOST 4405-75, TU 14-131-971-2001 |
| 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 |
0.37-0.44 |
≤0.03 |
≤0.03 |
0.2-0.5 |
3.2-4 |
0.6-1 |
≤0.6 |
Rest |
≤0.3 |
0.6-0.9 |
≤0.03 |
1.2-1.5 |
0.8-1.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
KCU, kJ/m2 |
| Rolled steel. Quenching in oil with 1050-1070 °C + Vacation at 620-630 °C (aging for 1 hour) + Holiday at 560-580 °C (aging 1 HR) |
|
≥1470 |
≥1668 |
≥440 |
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 |
| KCU |
Toughness |
