90HMF
Steel is prone to temper embrittlement, does not apply to welded structures. Flock sensitivity: sensitive. Temperature of critical points: Ac1 = 700, Mn = 215. Hardness after annealing (GOST 5950): HB 1 0 - 1 = 241 MPa .
supporting rolls of all sizes and trusses supporting rolls of composite sheet rolling mills for hot metal.
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 24.013.04 - 0 | 95.42–97.1 | 0.2–0.4 | 0.2–0.7 | 1.4–1.7 | < 0.3 | 0.1–0.2 | < 0.04 | 0.8–0.9 | < 0.04 | 0.2–0.3 |
Information on suppliers
Technological Properties
| Weldability | Flake Susceptibility | Propensity to temper brittleness |
|---|---|---|
| Not applicable for welded structures | sensitive | not inclined |
Standards
| Standard | Description |
|---|---|
| OST 24.013.04 - 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 |
Designation of types of weldability
| Parameter | Units of measurement | Description |
|---|---|---|
| no limits | Welding is performed without heating and without subsequent heat treatment | |
| Boundedly welded | Welding is possible with heating up to 100–120 °C and subsequent heat treatment | |
| Difficult to weld | For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing | |
| Not applicable for welded structures |