Hot-dip galvanized structural steel
Need S350GD Galvanized Steel sheets urgently for your construction project? GNEE STEEL keeps over 30,000 tons of S350GD stock in our warehouses, with a zinc coating range from 60g/㎡ to 275g/㎡. We guarantee shipment within 5 days and use seaworthy packaging to protect your cargo during transit.
S350gd is a grade in the European standard "EN 10346-2009 Continuous Hot-Dip Galvanized Steel Sheet Products", which is a galvanized steel sheet. S350G is structural steel requiring tensile strength greater than 350MPa, D means galvanized sheet, so s350gd is structural galvanized sheet with yield strength greater than 350MPa.
The S350G is available in the following hot dip coatings: S350GD+Z (galvanized), S350GD+ZF (galvanized-iron), S350GD+ZA (galvanized-aluminum), S350GD+AZ (aluminum-zinc), S350GD+AS (galvanized-iron) aluminum silicon).
Galvanized Steel sheets
industrial applications
Thanks to its high strength and reliable corrosion protection, S350GD is used in numerous construction applications:
Load-bearing steel structures: Frames, columns and beams in hall, bridge and hall apron construction.
Roof and façade systems: trapezoidal and standing seam profiles for industrial and commercial buildings with high weather resistance.
Drainage systems: gutters, downpipes and rainwater barrels that remain durable even in salty or urban environments.
Solar mounting systems: Substructures for photovoltaic and solar thermal applications where low maintenance and high load-bearing capacity are required.
Sandwich and composite panels: Wall and ceiling elements for industrial halls and logistics centers that require high rigidity and durability.
The wide range of coating variants allows maintenance cycles to be significantly extended and life cycle costs to be reduced.
Chemical Composition
| Element (Symbol and Name) | Percentage Range (%) |
|---|---|
| Fe (Iron) | Balance |
| C (Carbon) | 0.06 - 0.12 |
| Zn (Zinc) | 0.5 - 1.5 |
| Mn (Manganese) | 0.3 - 0.8 |
| P (Phosphorus) | ≤ 0.04 |
| S (Sulfur) | ≤ 0.03 |
The primary alloying elements in S350GD steel play crucial roles:
- Zinc (Zn): Provides corrosion resistance through galvanization.
- Carbon (C): Enhances strength but must be kept low to maintain ductility.
- Manganese (Mn): Improves hardenability and strength.
Mechanical Properties
| Property | Condition/Temper | Typical Value/Range (Metric) | Typical Value/Range (Imperial) | Reference Standard for Test Method |
|---|---|---|---|---|
| Yield Strength (0.2% offset) | Hot-Dip Galvanized | 350 MPa | 50.8 ksi | ASTM E8 |
| Tensile Strength | Hot-Dip Galvanized | 450 MPa | 65.3 ksi | ASTM E8 |
| Elongation | Hot-Dip Galvanized | 22% | 22% | ASTM E8 |
| Hardness (Brinell) | Hot-Dip Galvanized | 120 HB | 120 HB | ASTM E10 |
| Impact Strength | - | 27 J (at -20°C) | 20 ft-lbf (at -4°F) | ASTM E23 |
The mechanical properties of S350GD steel make it suitable for structural applications where strength and ductility are critical. Its yield strength of 350 MPa ensures it can withstand significant loads, while its elongation percentage indicates good formability.
With the upgrading of global infrastructure demand, the market application scenarios of S350GD galvanized steel continue to expand. We not only provide high-quality materials that meet international standards, but also offer a full-chain solution from material selection to processing. Contact us now and let S350GD galvanized steel be a solid partner for your project's success.
- 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 | -- |
