vergütet, hochfest, für gewichtssparende Konstruktionen
| Material number | 1.8904 |
| Designation | S550Q |
| Standard | EN 10025-6 |
| Category | Vergüteter hochfester Baustahl |
| Yield strength Re (min) | 550 N/mm² |
| Tensile strength Rm | 640–820 N/mm² |
| Elongation at break A (min) | 16 % |
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