5HV2S (6HV2S)
Substitute 6ХВ2С. Steel does not apply to welded structures, is slightly inclined to temper embrittlement. Flock sensitivity: sensitive. Hardness after annealing: HB 10 -1 = 229 — 255 MPa .
knives for cold metal cutting, thread rolling dies, punches and crimping dies for cold work dies of complex shape, working with high shock loads.
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 |
93.09–95.9 |
0.8–1.1 |
0.15–0.45 |
0.9–1.2 |
< 0.3 |
< 0.35 |
< 0.3 |
< 0.03 |
0.45–0.55 |
< 0.03 |
< 0.3 |
1.8–2.3 |
Information on suppliers
Physical characteristics
| Temperature, °C |
$$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ |
$$R\cdot 10^{-6}$$, $$\Omega\cdot m$$ |
|---|
| 20 |
|
0.3 |
| 100 |
0.462 |
|
| 200 |
|
0.42 |
| 300 |
0.462 |
|
| 500 |
|
0.69 |
| 600 |
0.655 |
|
| 800 |
|
1.08 |
| 900 |
0.832 |
1.15 |
| 1000 |
0.752 |
|
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{P}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ |
Treatment |
|---|
| Metal rolling |
|
|
|
|
1470 |
1290 |
10 |
30 |
230 |
Tempering 880 ° C, oil, leave 500 ° C, 2 h |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
|
annealing |
229–255 |
Technological Properties
| Weldability |
Flake Susceptibility |
Propensity to temper brittleness |
|---|
| Not applicable for welded structures |
sensitive |
loathsome |
Critical point temperatures
| Ac1, K |
Ac3(Acm), K |
Mn, K |
|---|
| 775 |
860 |
295 |
Analogues
| Germany |
USA |
France |
United Kingdom |
European Union |
Italy |
Spain |
Poland |
Czech Republic |
Austria |
|---|
| 1.2542 |
S1 |
55WC20 |
BS1 |
1.255 |
55WCrV8KU |
45WCrSi8 |
NZ3 |
19733 |
K455 |
Standards
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 physical characteristics
| Parameter |
Units of measurement |
Description |
| $$c\cdot 10^{-3}$$ |
$$\frac{J}{kg\cdot K}$$ |
The specific heat of the material (range 20°C–T) |
| $$R\cdot 10^{-6}$$ |
$$\Omega\cdot m$$ |
Electrical resistivity |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\sigma_{P}$$ |
$$MPa$$ |
Proportionality limit |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
| $$KCU\cdot 10^{3}$$ |
$$\frac{J}{m^2}$$ |
Impact toughness |
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 |
|
| Mn |
K |
|