1.1157 (40Mn4)
Classification
| Country |
Section |
Category |
| Germany |
Non-alloy Special Steels |
Structural Pressure Vessel and Engineering Steels with C < 0,5% |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
P, % |
C, % |
S, % |
|---|
|
97.89–98.59 |
0.25–0.5 |
0.8–1.1 |
< 0.035 |
0.36–0.44 |
< 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 |
|
|
880–1030 |
> 635 |
< 12 |
< 40 |
< 35 |
After hardening and tempering |
|
|
17–40 |
|
|
780–930 |
> 540 |
< 14 |
< 45 |
< 40 |
After hardening and tempering |
|
|
41–100 |
|
|
690–830 |
> 440 |
< 15 |
< 50 |
< 40 |
After hardening and tempering |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
soft, annealing |
< 217 |
Analogues
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| 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 |