Hot-dip Galvanized Steel
S280GD is a strong, low-alloy structural steel that's widely used in construction and manufacturing. With a minimum yield strength of 280 MPa, it's tough enough for demanding structural tasks. The hot-dip zinc coating provides superior protection against corrosion, guaranteeing extended durability. Thanks to this blend of strength and protection, the S280GD is perfect for structural frames, roofing systems, and other heavy-duty applications.
The S280GD grade is a structural steel with a yield point of at least 280 MPa.
S280GD is available in the following hot dip coatings: S280GD+Z (galvanized), S280GD+ZF (galvanized-iron), S280GD+ZA (galvanized-aluminum), S280GD+AZ (aluminum-zinc), S280GD+AS (galvanized-iron) aluminum silicon).
S280GD Steel Equivalent Grades
Under EN10346:2015, the equivalent grade for S280GD is 1.0244.
Additional Equivalent Materials (for reference only):
- EN 10346: 1.0244
- DIN 17162: StE280-3Z
- ASTM A653: Grade 40 (structural)
- JIS G3302: SGCC (structural use)
S280GD Galvanized Steel Coil Chemical Composition
| Element | Content (weight%) |
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.10 |
| Sulfur (S) | ≤ 0.045 |
| Silicon (Si) | ≤ 0.60 |
S280GD Galvanized Steel Coil Mecahmical Properties
| Property | Value | |
| Tensile Strength (Rm) | 360 MPa | |
| 0.2% Proof Strength (Rp0.2) | 280 MPa | |
| Min. Elongation (A, Lo = 80 mm) | – | 18% |
| 0.5mm < t ≤ 0.7mm | 16% | |
| 0.35mm < t ≤ 0.5mm | 14% | |
| t ≤ 0.35mm | 11% | |
| Bending Center Diameter (mm) | 1a | |
| S280GD tensile strength can range up to 140 MPa, depending on the specific material grade and processing conditions. | ||
Applications
S280GD is used in a wide range of construction applications where high load-bearing capacity and long-lasting corrosion protection are required.
Typical areas of application are
- Roof and façade systems: trapezoidal and standing seam profiles for residential, commercial and industrial buildings.
- Drainage components: Gutters, downpipes and rainwater collectors.
- Lightweight steel construction: hall constructions, hall aprons, carports and roofing.
- Facade cladding: Profiled sheets and sandwich panels for wall and ceiling elements.
- Solar mounting systems: Frames and substructures with a long service life and low maintenance.
Thanks to the flexible overlay options, maintenance intervals can be extended and overall operating costs reduced, making the S280GD an economically attractive solution for modern construction projects.
Available Steel Grade
| Steel grade | Coating | Yield(MPA) | Tensile(MPA) | Elongation(%) |
| DX51D | Z,ZF | -- | 270-500 | 20 |
| DX52D | Z,ZF | 140-300 | 270-420 | 22 |
| DX53D | Z,ZF | 140-260 | 270-380 | 26 |
| DX54D | Z,ZF | 140-220 | 270-350 | 30 |
| S220GD | Z,ZF | 220 | 300 | 18 |
| S250GD | Z,ZF | 250 | 330 | 17 |
| S280GD | Z,ZF | 280 | 360 | 16 |
| S320GD | Z,ZF | 320 | 390 | 15 |
| S350GD | Z,ZF | 350 | 420 | 14 |
| S400GD | Z,ZF | 400 | 470 | -- |
| S450GD | Z,ZF | 450 | 530 | -- |
| S500GD | Z,ZF | 500 | 560 | -- |