12x1 (EP430, 120X)
Another designation 120X, EP430. T temperature of critical points of steel 12Х1: Ac1 = 750, Ac3 (Acm) = 890, Mn = 245. Hardness after annealing (GOST 5950−2000): HB 10 -1 = 241 MPa.
for measuring instrument (tiles, gauges, templates)
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Tool steel | Alloy tool steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Ti, % | Cu, % | Ni, % | V, % | P, % | C, % | S, % | Mo, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5950-2000 | 94.76–97.15 | 0.1–0.4 | 0.3–0.6 | 1.3–1.65 | < 0.03 | < 0.3 | < 0.4 | < 0.15 | < 0.03 | 1.15–1.25 | < 0.03 | < 0.2 | < 0.2 |
Information on suppliers
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Mn, K |
|---|---|---|
| 750 | 890 | 245 |
Analogues
| Germany | Poland | Czech Republic |
|---|---|---|
| 140 Cr 2 | NC6 | 19422 |
Standards
| Standard | Description |
|---|---|
| GOST 5950-2000 | GOST |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Ti | % | Titan |
| 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 | |
| Ac3(Acm) | K | |
| Mn | K |