H12MF (H6VF, H12F1, H12VM)
Steel is not used for welded structures, prone to temper embrittlement. Temperature of critical points: Ac1 = 810, Ac3 (Acm) = 860, Ar3 (Arcm) = 780, Ar1 = 760, Mn = 225. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 255 MPa. Substitutes: H6VF, H12F1, X12VM .
profiling rollers of complex shapes, sections of body punches complex shapes, intricate dyroproshivnye matrix for forming the sheet metal, the reference gear, rolling dies, dies, dies and punches punching perforated stamps with a complex configuration of the working parts, forming an active part of the electrical machine.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Tool steel | Die tool steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5950-73 | 83.34–86.75 | 0.1–0.4 | 0.15–0.45 | 11–12.5 | < 0.3 | < 0.4 | 0.15–0.3 | < 0.03 | 1.45–1.65 | < 0.03 | 0.4–0.6 |
Information on suppliers
Technological Properties
| Weldability | Propensity to temper brittleness |
|---|---|
| Not applicable for welded structures | inclined |
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Ar3(Arcm), K | Ar1, K | Mn, K |
|---|---|---|---|---|
| 810 | 860 | 780 | 760 | 225 |
Analogues
| USA | Germany | Japan | France | United Kingdom | European Union | Italy | Spain | Sweden | Bulgaria | Hungary | Poland | Czech Republic |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T30402 | 1.2601 (X165CrMoV12) | SKD11 | X160CrMoV12 | BD2 | X160CrMoV12-1 | X160CrMoV12-1 | X160CrMoV12 | 2310 | Ch12MF | K8 | NC11LV | 19572 |
Standards
| Standard | Description |
|---|---|
| GOST 5950-73 |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| 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 |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Ac3(Acm) | K | |
| Ar3(Arcm) | K | |
| Ar1 | K | |
| Mn | K |