H12VM (X12M)
Temperature of critical points: Ac 1 = 815, Mn = 225. Hardness after annealing: HB 10 -1 = 255 MPa. Substitute H12M .
cool stamps high resistance to abrasion, not subjected to strong impact and shock, wire drawing board and drawing dies, eyelets for calibrating wire rod metal at thread rolling, bending and forming dies, complex body punches, dies and punches punching and perforated stamps, active part of the electric punching machines.
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, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5950-73 | 81.74–85.5 | 0.1–0.4 | 0.15–0.45 | 11–12.5 | < 0.3 | < 0.35 | 0.15–0.3 | < 0.03 | 2–2.2 | < 0.03 | 0.6–0.9 | 0.5–0.8 |
Information on suppliers
Critical point temperatures
| Ac1, K | Mn, K |
|---|---|
| 815 | 225 |
Analogues
| USA | Germany | Japan | Spain |
|---|---|---|---|
| D4 | 1.2436 (X210CrW12) | SKD-2 | X210CrW12 |
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 |
| W | % | Tungsten |
Description of temperatures of critical points
| Parameter | Units of measurement | Description |
|---|---|---|
| Ac1 | K | |
| Mn | K |