8H4V3M3F2 (EP570)
Temperature of critical points: Ac1 = 865, Ac3 (Acm) = 895, Ar1 = 720, Mn = 195. Hardness after annealing: HB 10 -1 = 255 MPa
for the production of thread rolling tools for cold rolling, roller shlitsenakatnyh; woodworking tools; knives truborazrubochnyh presses Guillotine and other scissors; punches and dies of cold volume deformation operated with operating pressures up to 2000−2100 MPa
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Tool steel | Die tool steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | V, % | P, % | C, % | S, % | Mo, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5950-73 | 85.09–88.55 | 0.15–0.4 | 0.15–0.4 | 3.5–4.5 | 1.9–2.5 | < 0.03 | 0.75–0.85 | < 0.03 | 2.5–3 | 2.5–3.2 |
Information on suppliers
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Ar1, K | Mn, K |
|---|---|---|---|
| 865 | 895 | 720 | 195 |
Standards
| Standard | Description |
|---|---|
| GOST 5950-73 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| V | % | Vanadium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
| W | % | Tungsten |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Ac3(Acm) | K | |
| Ar1 | K | |
| Mn | K |