1.0406 (C25)
Classification
| Country |
Section |
Category |
| Germany |
Non-alloy Steels |
Steels with Average 0,12% =< C < 0,25% or 400 MPa = < Rm < 500 MPa |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Ni, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
|
97.62–99.38 |
< 0.4 |
0.4–0.7 |
< 0.4 |
< 0.4 |
< 0.045 |
0.22–0.29 |
< 0.045 |
< 0.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\epsilon_T$$, % |
$$R_{eH}$$, $$MPa$$ |
Treatment |
|---|
|
|
< 100 |
|
normalization |
440 |
23 |
17 |
230 |
|
|
|
100–250 |
|
normalization |
420 |
23 |
|
210 |
|
|
|
250–500 |
|
normalization |
400 |
23 |
|
190 |
|
|
|
500–1000 |
|
normalization |
390 |
22 |
|
180 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
soft, annealing |
< 156 |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ni |
% |
Nickel |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\epsilon_T$$ |
% |
Elongation at break (transverse) |
| $$R_{eH}$$ |
$$MPa$$ |
Upper yield point |