Designation
| Name |
The value |
| Designation GOST Cyrillic |
5Х3В3МФС |
| Designation GOST Latin |
5X3B3MFC |
| Transliteration |
5H3V3MFS |
| By chemical elements |
5Cr3W3MoVС |
| Name |
The value |
| Designation GOST Cyrillic |
ДИ23 |
| Designation GOST Latin |
DI23 |
| Transliteration |
DI23 |
| By chemical elements |
CuИ23 |
Description
Steel 5KH3V3MFS used: for the manufacture of heavily loaded forming tool (piercing and forming punches, matrices, etc.); instrument for landing on horizontal forging machines and inserts of dies strained structures, for hot volumetric deformation of structural steels and heat-resistant metals and alloys (instead of less heat-resistant steel grades 3Х2В8Ф and 4KH2V5MF). Most high hardenability and heat resistance of a steel brand 5ХЗВЗМФС.
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 |
Nb |
W |
| GOST 5950-2000 |
0.45-0.52 |
≤0.03 |
≤0.03 |
0.2-0.5 |
2.5-3.2 |
0.5-0.8 |
≤0.4 |
Rest |
≤0.3 |
1.5-1.8 |
≤0.03 |
0.8-1.1 |
0.05-0.15 |
3-3.6 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Rolled steel. Quenching in oil from 1130 °C to + Vacation at 560-580 °C (exposure 2 hours) |
| 15 |
≥1472 |
≥1650 |
≥8 |
≥38 |
≥245 |
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 |
