1.7701 (52CrMoV4)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
Cr-Mo-V |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| EN 10089 |
96.19–97.67 |
< 0.4 |
0.7–1.1 |
0.9–1.2 |
0.1–0.2 |
< 0.025 |
0.48–0.56 |
< 0.025 |
0.15–0.3 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{Y}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
$$KU$$, $$J$$ |
Treatment |
|---|
|
|
|
|
|
1400–1700 |
> 1200 |
< 6 |
< 30 |
> 14 |
Tempering 830-860 in oil. Vacation 430-500 in the air |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
improved machinability |
280 |
|
|
annealing, soft |
248 |
|
|
annealing, carbide spheroidization |
230 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{Y}$$ |
$$MPa$$ |
Yield strength |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
| $$KU$$ |
$$J$$ |
Impact energy |