7H2SMF
Technological properties. Temperature of critical points: Ac1 = 780, Ac3 (Acm) = 835, Ar3 (Arcm) = 700, Ar1 = 625, Mn = 180.
forged work rolls for cold rolling of metals.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Tool steel | Roll tool steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % |
|---|---|---|---|---|---|---|---|---|---|---|
| OST 24.013.20 - 0 | 93.54–95.8 | 0.7–1 | 0.6–1 | 1.7–2.2 | < 0.5 | 0.15–0.3 | < 0.03 | 0.7–0.8 | < 0.03 | 0.35–0.6 |
Information on suppliers
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Ar3(Arcm), K | Ar1, K | Mn, K |
|---|---|---|---|---|
| 780 | 835 | 700 | 625 | 180 |
Standards
| Standard | Description |
|---|---|
| OST 24.013.20 - 0 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ni | % | Nickel |
| V | % | Vanadium |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| Mo | % | Molybdenum |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Ac3(Acm) | K | |
| Ar3(Arcm) | K | |
| Ar1 | K | |
| Mn | K |