1.8978 (L555MB)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
High Strength Weldable Steels not Intended for Heat Treatment by User |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Ti, % |
Cu, % |
Ni, % |
V, % |
Al, % |
P, % |
C, % |
S, % |
Nb, % |
Mo, % |
N, % |
|---|
| EN 10208-2 |
96.303–99.985 |
< 0.45 |
< 1.8 |
< 0.3 |
< 0.06 |
< 0.25 |
< 0.3 |
< 0.1 |
0.015–0.06 |
< 0.025 |
< 0.16 |
< 0.02 |
< 0.06 |
< 0.1 |
< 0.012 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{0.5}$$, $$MPa$$ |
$$\epsilon_L$$, % |
Treatment |
|---|
|
|
|
|
|
625 |
555–675 |
18 |
|
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ti |
% |
Titan |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| Al |
% |
Aluminium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Nb |
% |
Niobium |
| Mo |
% |
Molybdenum |
| N |
% |
Nitrogen |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{0.5}$$ |
$$MPa$$ |
Tensile stress required to produce a total elongation of 0.5% |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |