S320GD galvanized steel
S320GD is a high-strength hot-dip galvanized low-carbon steel. The zinc coating on its surface provides added corrosion resistance and extends its lifespan. It contains elements like iron, carbon, manganese, and silicon, which give it good strength and formability.
The steel is easy to work with - it can be cut, bent, and stamped into various shapes, making it adaptable for different design and manufacturing needs. This flexibility makes it useful across a range of industries.
S320GD galvanized steel sheet/plate is commonly used in construction, automotive, and appliance sectors, especially for components exposed to harsh environments, like exterior walls, roofs, and car bodies. The zinc coating protects against moisture, acid rain, and other corrosive elements, making it ideal for areas with high humidity or fluctuating temperatures. It's also used in light industrial machinery and outdoor equipment.
As construction and manufacturing standards continue to evolve, materials must meet higher requirements for strength, durability, and sustainability. S320GD Hot Dip Galvanized Steel is developed to meet these demands efficiently.
Its structural-grade base material combined with a robust zinc coating ensures reliable long-term performance.
Corrosion Resistance and Service Life
The corrosion resistance of galvanized steel depends heavily on zinc coating thickness and environmental conditions.
| Environment | Typical Service Life (Z275) |
|---|---|
| Rural | 20–30 years |
| Urban | 15–25 years |
| Coastal | 10–20 years |
| Industrial | Variable (higher coating recommended) |
For most construction environments, Z275 coating provides sufficient protection while maintaining cost efficiency.
Fabrication and Processing Advantages
| Feature | Benefit |
|---|---|
| High yield strength | Structural reliability |
| Uniform zinc coating | Stable surface quality |
| Good formability | Easy roll forming |
| Weld compatibility | Efficient fabrication |
These advantages make S320GD galvanized steel suitable for automated production lines and customized structural components.
Common Size and Thickness Range
| Thickness (mm) | Width (mm) | Application |
|---|---|---|
| 0.35–1.2 | 600–1250 | Roofing & cladding |
| 1.2–3.0 | 1000–1500 | Structural components |
| 3.0–6.0 | Custom | Load-bearing parts |
GNEE STEEL supports both standard and customized size requirements to meet different project needs.
The combination of strength, corrosion resistance, and fabrication flexibility makes S320GD+Z275 Hot Dip Galvanized Steel a trusted material across multiple industries. Its predictable performance helps reduce structural risks and long-term maintenance costs.
GNEE STEEL supplies S320GD+Z275 Hot Dip Galvanized Steel Coil, Sheet, and Strip with consistent quality and reliable delivery. Supported by experienced technical teams and strict quality control systems, GNEE STEEL helps customers achieve long-lasting, cost-effective solutions for construction and industrial projects.
Choosing GNEE STEEL means choosing stable quality, professional service, and a trusted partner in galvanized steel supply.
Available Steel Grade
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ti |
|
Forcold Forming Chinese Standard |
DX51D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
DX52D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX53D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX54D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX56D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX57D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
Forcold Forming Japanese Standard |
SGCC |
0.15 |
0.50 |
0.80 |
0.050 |
0.030 |
0.025 |
|
SGCD1 |
0.12 |
0.50 |
0.60 |
0.040 |
0.030 |
0.025 |
|
|
SGCD3 |
0.08 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
SGCD4 |
0.06 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
For Structure Japanese Standard |
SGC340 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.025 |
|
SGC400 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.150 |
|
|
SGC490 |
0.30 |
0.50 |
2.00 |
0.200 |
0.035 |
0.025 |
|
|
SGC510 |
0.30 |
0.50 |
2.50 |
0.200 |
0.035 |
0.025 |
|
|
For Structure AISI Standard |
S220GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
S250GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S280GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S320GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S350GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
|
|
S550GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
Mechanical Properties
|
Grade |
Yield Strength MPa≥ |
Tensile Strength MPa≥ |
Elongation A%≥ |
|
DX51D Z/ZM/AZ/AM |
240-380 |
270-500 |
22 |
|
DX52D Z/ZM/AZ/AM |
140-300 |
270-420 |
26 |
|
DX53D Z/ZM/AZ/AM |
140-260 |
270-380 |
30 |
|
DX54D Z/ZM/AZ/AM |
120-220 |
260-350 |
36 |
|
S220GD Z/ZM/AM |
220 |
300 |
20 |
|
S250GD Z/ZM/AZ/AM |
250 |
330 |
19 |
|
S280GD Z/ZM/AM |
280 |
360 |
18 |
|
S300GD A/AM |
300 |
380 |
18 |
|
S320GD Z/ZM/AM |
320 |
390 |
17 |
|
S350GD Z/ZM/AZ/AM |
350 |
420 |
16 |
|
S450GD A/AM |
450 |
480 |
15 |
|
S550GD Z/ZM/AZ/AM |
550 |
550 |
- |
