S320GD galvanized steel
Steel plate testing
Struggling to find S320GD galvanized steel with reliable corrosion resistance for outdoor applications? Unlike standard suppliers, GNEE specializes in OEM/ODM services for high-performance galvanized products.
We can produce tailored thickness (0.1-100mm), width (up to 3000mm), and zinc coating weights (Z60-Z275) based on your project drawings.
Read on to learn about the corrosion resistance mechanisms, durability performance, and technical specifications of S320GD+Z120 galvanized steel.
Galvanized steel is carbon steel coated with zinc through hot-dip or electroplating processes. This coating protects the base metal from rust and environmental damage.
Common uses include construction, automotive manufacturing, and infrastructure. S320GD galvanized steel is a high-strength, formable grade ideal for demanding corrosion-prone environments.
Corrosion Resistance Mechanism of S320GD+Z120 Galvanized Steel
The "+Z120" designation in S320GD+Z120 galvanized steel indicates a zinc coating weight of 120g/m² per side, delivering exceptional corrosion protection through two key mechanisms:
- Barrier Protection: The zinc coating forms a physical barrier between the steel substrate and corrosive elements like moisture, oxygen, and chemicals.
- Cathodic Protection: If the coating is scratched, zinc acts as a sacrificial anode, corroding first to protect the exposed steel.
This dual protection system ensures S320GD galvanized steel maintains performance in harsh environments, including coastal areas with salt spray exposure.
Chemical Composition of S320GD Galvanized Steel
The chemical composition of S320GD galvanized steel directly influences its corrosion resistance and mechanical properties. The following table outlines the standard composition:
| Element | Symbol | Content (Max. %) | Role in Corrosion Resistance |
|---|---|---|---|
| Carbon | C | 0.12 | Controls strength without reducing ductility |
| Manganese | Mn | 1.60 | Enhances formability and impact resistance |
| Phosphorus | P | 0.035 | Minimized to prevent brittleness and corrosion |
| Sulfur | S | 0.030 | Reduced to avoid pitting corrosion |
| Silicon | Si | 0.50 | Improves zinc coating adhesion |
| Aluminum | Al | 0.020 | Enhances oxidation resistance |
| Titanium | Ti | 0.22 | Refines grain structure for better durability |
Mechanical Properties of S320GD Galvanized Steel
S320GD galvanized steel maintains excellent mechanical performance while providing superior corrosion resistance. The table below shows typical mechanical properties:
| Property | Standard | Value | Impact on Durability |
|---|---|---|---|
| Yield Strength (Min.) | MPa | 320 | Ensures structural stability under load |
| Tensile Strength | MPa | 400-510 | Provides resistance to breaking |
| Elongation (Min.) | % | 22 | Allows forming without cracking |
| Bend Test | - | 180° without cracking | Demonstrates ductility for fabrication |
| Zinc Coating Adhesion | - | Passes tape test | Prevents coating peeling in service |
These properties make S320GD galvanized steel suitable for applications requiring both corrosion resistance and structural integrity.
Available Sizes and Dimensions of S320GD Galvanized Steel
GNEE offers S320GD galvanized steel in a comprehensive range of sizes to meet diverse application requirements:
| Product Form | Thickness Range | Width Range | Length Range | Typical Applications |
|---|---|---|---|---|
| Coils | 0.1mm - 10.0mm | 600mm - 3000mm | Custom coil weights | Automotive parts, roofing |
| Sheets | 0.3mm - 10.0mm | 600mm - 2000mm | 1000mm - 12000mm | Wall cladding, electrical enclosures |
| Cut-to-Size | 0.5mm - 8.0mm | Custom per request | Custom per request | Machinery components, structural parts |
Custom dimensions are available through our OEM/ODM services to match specific project requirements.
Durability Performance of S320GD+Z120 Galvanized Steel
S320GD+Z120 galvanized steel delivers long-term durability in various environments, with typical service life expectations:
- Rural Environments: 20-30 years of maintenance-free service
- Suburban Areas: 15-25 years of reliable performance
- Industrial Zones: 10-20 years with proper installation
- Coastal Regions: 8-15 years even with salt exposure
These longevity figures are based on standard installation practices and normal environmental conditions. Proper maintenance can extend service life further.
S320GD galvanized steel combines exceptional corrosion resistance, durability, and mechanical performance, making it an ideal choice for demanding applications.The Z120 zinc coating provides reliable protection against environmental damage, while the carefully controlled chemical composition ensures consistent quality.
At GNEE, we offer customized solutions to meet your specific project requirements. Contact us today to request a detailed S320GD galvanized steel quotation and technical datasheet tailored to your application.
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- Available Steel Grade
|
Available Steel Grade(Ensure weight and support third-party testing) |
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|
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 |
-- |
|
Select type Galvanized Steel based on requirements |
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