CVH (9XC, 9HVG)
For measuring and cutting tools, threaded gauges, broaches, long taps.
measuring and cutting tools, for which increased warping during quenching is unacceptable, thread gauges, broaches, taps long, long reamers and other kind of special tools, Cold-dies and punches, tooling.
Classification
| Country | Section | Category |
|---|---|---|
| CIS, Russia, Ukraine | Tool steel | Alloy tool steel |
Chemical composition
| Standard | Fe, % | Si, % | Mn, % | Cr, % | Cu, % | Ni, % | P, % | C, % | S, % | W, % |
|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5950-2000 | 93.89–96.1 | 0.1–0.4 | 0.8–1.1 | 0.9–1.2 | < 0.3 | < 0.4 | < 0.03 | 0.9–1.05 | < 0.03 | 1.2–1.6 |
Information on suppliers
Physical characteristics
| Temperature, °C | $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ | $$\rho$$, $$\frac{kg}{m^3}$$ | $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|---|---|---|
| 20 | 7850 | 0.38 | |
| 100 | 11 | 7830 | |
| 200 | 12 | ||
| 300 | 13 | 7760 | |
| 400 | 13.5 | ||
| 500 | 14 | ||
| 600 | 14.5 | 7660 |
Technological Properties
| Weldability | Flake Susceptibility | Propensity to temper brittleness |
|---|---|---|
| Not applicable for welded structures | sensitive | loathsome |
Critical point temperatures
| Ac1, K | Ac3(Acm), K | Ar1, K | Mn, K |
|---|---|---|---|
| 750 | 940 | 710 | 210 |
Analogues
| USA | Germany | Japan | France | European Union | Italy | Spain | China | Sweden | Bulgaria | Hungary | Poland | Romania |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T31507 | 1.2419 (105WCr6) | SKS2 | 105WC13 | 107WCR5 | 107WCr5KU | 105WCR5 | CrWMn | 2140 | ChWG | W9 | NWC | 105MnCrW11 |
Standards
| Standard | Description |
|---|---|
| GOST 5950-2000 | GOST |
Description of chemical elements
| Element | Units of measurement | Description |
|---|---|---|
| Fe | % | Iron |
| Si | % | Silicon |
| Mn | % | Manganese |
| Cr | % | Chrome |
| Cu | % | Copper |
| Ni | % | Nickel |
| P | % | Phosphorus |
| C | % | Carbon |
| S | % | Sulfur |
| W | % | Tungsten |
Description of physical characteristics
| Parameter | Units of measurement | Description |
|---|---|---|
| $$\alpha\cdot 10^{6}$$ | $$K^{-1}$$ | Coefficient of thermal (linear) expansion (range 20°C–T) |
| $$\rho$$ | $$\frac{kg}{m^3}$$ | The density of the material |
| $$R\cdot 10^{-6}$$ | $$\Omega\cdot m$$ | Electrical resistivity |
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 | |
| Ar1 | K | |
| Mn | K |