1.7020 (32Cr2)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
Cr, Cr-B |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
P, % |
C, % |
S, % |
|---|
|
97.78–98.82 |
< 0.4 |
0.5–0.8 |
0.4–0.6 |
< 0.035 |
0.28–0.35 |
< 0.035 |
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 |
|---|
|
|
< 16 |
|
|
700–850 |
> 450 |
< 15 |
< 40 |
< 35 |
After hardening and tempering |
|
|
17–40 |
|
|
600–750 |
> 350 |
< 15 |
< 45 |
< 35 |
After hardening and tempering |
|
|
41–100 |
|
|
500–650 |
> 300 |
< 17 |
< 50 |
< 35 |
After hardening and tempering |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
soft, annealing |
< 197 |
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
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 |