1.1149
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, % |
|---|
|
97.69–99.41 |
< 0.4 |
0.4–0.7 |
< 0.4 |
< 0.4 |
< 0.03 |
0.17–0.24 |
0.02–0.04 |
< 0.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % |
$$R_{eH}$$, $$MPa$$ |
$$KV_{L}$$, $$J$$ |
Treatment |
|---|
|
|
< 16 |
|
normalization |
430 |
24 |
240 |
|
|
|
|
16–100 |
|
normalization |
410 |
25 |
210 |
|
|
|
|
|
|
moderate hardening |
|
|
|
50 |
|
Technological Properties
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 |
| $$KV_{L}$$ |
$$J$$ |
Impact energy (longitudinal) |
Designation of types of weldability
| Parameter |
Units of measurement |
Description |
| no limits |
|
Welding is performed without heating and without subsequent heat treatment |
| Boundedly welded |
|
Welding is possible with heating up to 100–120 °C and subsequent heat treatment |
| Difficult to weld |
|
For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing |
| Not applicable for welded structures |
|
|