EN 10137-3 Grade S550A quenched and tempered (+QT)
EN 10137-3 Grade S550A quenched and tempered (+QT) introduction
S550A is a precipitation hardening and weldable fine grained steel.
yield point: >550 N/mm²
application: welded steel constructions of various types, e.g. bridges and load-carrying constructions as well as transport vehicles, lifting and earthmoving machines.
application limits: at -20°C is warranted a notch impact energy of 40 J (longitudinal test specimen)
cold formability: for nominal size
Equivalent material: DIN 1.8991, DIN S550A, EN 1.8991
EN 10137-3 Grade S550A quenched and tempered (+QT) general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 g/cm³ |
Typical for Steel |
EN 10137-3 Grade S550A quenched and tempered (+QT) thermal
| Property |
Value |
| Carbon |
Carbon of 0.03 - 0.12 % |
| Manganese |
Manganese of 0.3 - 1.8 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.5 % |
| Sulfur |
Sulfur of 0.015 % |
EN 10137-3 Grade S550A quenched and tempered (+QT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 190 - 210 GPa |
Typical for Steel |
| Elongation |
20.0 °C |
Elongation of 16 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 650 - 820 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 530 - 550 MPa |
- |
