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Temperature of critical points: Ac1 = 745, Ar1 = 700, Mn = 240. Hardness after annealing (OST 5950−2000): HB 1 0 -one = 229 MPa .
for chisels used in the notch of files; very solid eccentric cams and fingers; smooth cylindrical gauge and caliber of the Rings; lathe, planer and slotting cutters in straight-and repair shops
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 5950-73 | 95.06–97.5 | 0.1–0.4 | 0.15–0.45 | 1.3–1.65 | < 0.03 | < 0.3 | < 0.4 | < 0.15 | < 0.03 | 0.95–1.1 | < 0.03 | < 0.2 | < 0.2 |
Information on suppliers
Critical point temperatures
| Ac1, K | Ar1, K | Mn, K |
|---|---|---|
| 745 | 700 | 240 |
Analogues
| USA | Germany | Japan | France | United Kingdom | European Union | Italy | Spain | China | Sweden | Bulgaria | Hungary | Poland | Austria |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L1 | 1.2067 (102Cr6) | SUJ2 | 100Cr6 | 2067 | 1.2067 | 102Cr6KU | 100Cr6 | Cr2 | 2258 | 102Cr6 | K4 | NC4 | BOHLERK200 |
Standards
| Standard | Description |
|---|---|
| GOST 5950-73 |
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 | |
| Ar1 | K | |
| Mn | K |