Definition
Structural steel (non-alloyed high-grade steel) S550GD is a structural steel with a yield point of 550 N/mm², which has excellent corrosion resistance, forming, coating and other properties.
S550GD is available with the following hot dip coatings: S550GD+Z (galvanized), S550GD+ZF (galvanized-iron), S550GD+ZA (galvanized-aluminum), S550GD+AZ (aluminum-zinc)
Chemical Composition Of S550GD (Casting Analysis)
| Designation | Chemical composition % by mass max. |
||||||
| Steel grade | Symbols for the types of available coatings | C | Si | Mn | P | S | |
| Steel name | Steel number | ||||||
| S550GD | 1.0531 | +Z,+ZF,+ZA,+ZM,+AZ | 0,20 | 0,60 | 1,70 | 0,10 | 0,045 |
Mechanical Properties Of S550GD (Longitudinal)
| Designation | Mechanical properties | ||||
| Steel grade | Symbols for the types of available coatings | Proof strength Rp0,2 a MPad min. | Tensile strength Rm b MPad min. | Elongation A80 c % min. |
|
| Steel name | Steel number | ||||
| S550GD | 1.0531 | +Z,+ZF,+ZA,+ZM, +AZ | 550 | 560 | - |
Equivalent material (for reference only)
ASTM SS250, ASTM SS255, ASTM SS275, ASTM HTS, DIN ST50, DIN S550GD, ISO 550, DIN 1.0531, etc.
Application
Can be used in the field of construction: building panels, buildings, steel plates and bridges, in the field of factories and machinery: strips, equipment belts, factory infrastructure, household goods, furniture, ships, automobile production, etc.
