S320GD galvanized steel
Struggling to find customized S320GD galvanized steel with special sizes or coatings? Unlike standard suppliers, GNEE specializes in OEM/ODM services. We can produce tailored thickness (0.1-100mm), width (up to 3000mm), and coatings (+ZF zinc-iron/+AZ aluminum-zinc) based on your drawings. Read on for our customization case studies and strict QC process.
This article details our stock specifications, zinc coating options (Z/ZA/ZM), and seaworthy anti-rust packaging solutions. More importantly, we'll compare S320GD galvanized steel with S350GD to help you choose the right coated structural steel for your project.
S320GD galvanized steel
Chemical Composition Comparison of S320GD vs S350GD
Both grades comply with EN 10346, but slight compositional differences drive performance variations:
|
Element |
S320GD (wt%) |
S350GD (wt%) |
Key Impact |
|
Carbon (C) |
≤0.12 |
≤0.12 |
Identical weldability; no brittleness risk |
|
Silicon (Si) |
≤0.50 |
≤0.60 |
S350GD has higher Si for enhanced strength |
|
Manganese (Mn) |
≤1.60 |
≤1.70 |
Higher Mn in S350GD boosts tensile strength |
|
P/S |
≤0.025 each |
≤0.025 each |
Equal corrosion resistance foundation |
|
Aluminum (Al) |
≥0.020 |
≥0.020 |
Same coating adhesion support |
Both grades are compatible with hot-dip galvanizing (Z/ZA/ZM) processes.
Mechanical Properties of S320GD vs S350GD
The core difference lies in strength, which defines application scope:
|
Property |
S320GD |
S350GD |
Advantage for Users |
|
Yield Strength |
≥320MPa (≤3mm) / ≥300MPa (>3mm) |
≥350MPa (≤3mm) / ≥330MPa (>3mm) |
S350GD for high-load structures |
|
Tensile Strength |
400-550MPa |
440-590MPa |
S320GD balances strength and ductility |
|
Elongation (A80) |
≥22% |
≥20% |
S320GD better for complex forming |
|
Impact Energy (-20°C) |
≥27J |
≥27J |
Equal low-temperature durability |
S320GD galvanized steel offers superior formability, while S350GD excels in high-strength requirements.
Stock Specifications & Coating Options for Both Grades
GNEE Steel stocks both grades with matching dimensions and coating flexibility:
|
Specification |
S320GD Stock Range |
S350GD Stock Range |
|
Thickness |
0.1-100mm |
0.5-100mm |
|
Width |
600-3000mm |
600-3000mm |
|
Coil Weight |
3-30 tons |
5-30 tons |
|
Coating Options |
Z (50-225g/m²), ZA (100-200g/m²), ZM (80-180g/m²) |
Same as S320GD |
S320GD has a wider thin-gauge range (0.1-0.4mm) for precision parts, while S350GD focuses on structural-grade thicknesses.
Application Scenarios: When to Choose S320GD vs S350GD
-
Ideal Uses for S320GD Galvanized Steel
Auto body panels, door frames, and chassis components (requires forming flexibility).
Solar brackets, roofing sheets, and light structural frames (balanced strength and cost).
Indoor/outdoor furniture and small industrial equipment (corrosion resistance + formability).
-
Ideal Uses for S350GD
Heavy-duty structural beams, columns, and bridge components (high load-bearing).
Large-scale construction projects (skyscrapers, stadiums) needing high yield strength.
Heavy machinery frames and agricultural equipment (abrasion resistance).
Cost & Delivery Comparison
|
Factor |
S320GD |
S350GD |
|
2026 Factory Price (Z120, USD/ton) |
$750-850 |
$790-890 |
|
Delivery Time |
7 days (30,000-ton stock) |
10-15 days (15,000-ton stock) |
|
Bulk Discount (≥50 tons) |
3% off |
3% off |
S320GD galvanized steel offers better cost-effectiveness for most general structural projects.
Choosing between S320GD and S350GD depends on your project's strength requirements, formability needs, and budget. S320GD galvanized steel is the versatile choice for most construction, auto, and solar projects, with abundant stock and 7-day fast shipment.
GNEE Steel's factory-direct pricing and customized coating solutions ensure you get the right material at the right cost. Ready to secure your order? Reserve 30,000-ton S320GD ready stock (7-day shipment) – Click to lock your order with no deposit!
Get extra 3% off + free sea freight quote!