1.1209 (C55R)
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, % |
Cr, % |
Ni, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| EN 10083-1 |
97.13–98.86 |
< 0.4 |
0.6–0.9 |
< 0.4 |
< 0.4 |
< 0.03 |
0.52–0.6 |
0.02–0.04 |
< 0.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % |
$$R_{eH}$$, $$MPa$$ |
Treatment |
|---|
|
|
< 16 |
|
normalization |
680 |
11 |
370 |
|
|
|
16–100 |
|
normalization |
640 |
12 |
330 |
|
|
|
100–250 |
|
normalization |
620 |
12 |
300 |
|
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
|
|
improved machinability |
255 |
|
|
annealing, soft |
229 |
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 |
| $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$ |
% |
Elongation at break (longitudinal) (for L0 = 5.65√So) |
| $$R_{eH}$$ |
$$MPa$$ |
Upper yield point |