Galvanized steel coil
Looking for equivalent grades of S350GD galvanized steel coil for global project compliance? You've come to the right place. As a direct factory with international certification, GNEE Steel supplies EN 10346-compliant S350GD galvanized steel coil and helps clients match it to regional standards. In this guide, we'll list equivalent grades from Europe, the US, China, and Japan, plus compare their key properties to ensure seamless substitution.
Galvanized steel coil
Galvanized steel coil is a rolled steel product coated with zinc, widely used in construction, automotive, and home appliances. Common grades include S320GD (medium-strength), S350GD (high-strength), and DX51D (general-use)-with S350GD favored for structural parts needing high yield strength (≥350MPa).
Global projects often require matching local standards, so knowing S350GD's equivalents prevents compliance issues. Whether you're sourcing for a European building or a US automotive plant, this guide simplifies grade selection.
International Equivalent Grades of S350GD Galvanized Steel Coil
S350GD galvanized steel coil has established equivalents across major regional standards. The table below lists key equivalents and their respective standards:
| Region | Equivalent Grade | Standard Number | Key Matching Indicator (Yield Strength) |
|---|---|---|---|
| Europe | S350GD+Z | EN 10346 | ≥350MPa (same as base grade) |
| United States | G90 (ASTM A653) | ASTM A653 | ≥350MPa (Grade 80) |
| China | Q355GNHD | GB/T 2518 | ≥345MPa (close to 350MPa) |
| Japan | SGHC440 | JIS G3302 | ≥340MPa (functional equivalent) |
| South Korea | SS490GAL | KS D3506 | ≥340MPa (compatible for structural use) |
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Notes on Equivalence:
European S350GD+Z is the direct base grade, with "+Z" indicating hot-dip galvanization.
US ASTM A653 Grade 80 (with G90 coating) matches S350GD's strength, though the naming convention differs.
Chinese Q355GNHD has a slightly lower yield strength (345MPa) but is widely accepted as equivalent for most structural projects.
Property Comparison of S350GD and Its Equivalent Grades
To ensure substitution suitability, compare key properties of S350GD with its equivalents. The table below focuses on mechanical and coating properties critical for performance:
| Property | S350GD (EN 10346) | ASTM A653 Grade 80 (US) | Q355GNHD (China) | SGHC440 (Japan) |
|---|---|---|---|---|
| Yield Strength | ≥350MPa | ≥350MPa | ≥345MPa | ≥340MPa |
| Tensile Strength | 410-550MPa | 448-586MPa | 470-630MPa | 440-590MPa |
| Elongation (A80mm) | ≥17% | ≥15% | ≥18% | ≥17% |
| Zinc Coating Weight | Z140-Z275 | G60-G90 (60-90g/m²) | Z140-Z275 | Z120-Z275 |
| Bending Performance | 180°, r=1.5t | 180°, r=1.5t | 180°, r=1.5t | 180°, r=2.0t |
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Key Takeaways:
All equivalents meet or closely match S350GD's strength requirements for structural use.
US ASTM A653 has a higher tensile strength range, making it suitable for heavy-load applications.
Chinese Q355GNHD offers better elongation, which is beneficial for cold forming.
Dimensional Compatibility of S350GD and Equivalent Coils
Dimensional consistency is critical for manufacturing and installation. Below is the standard thickness range of S350GD and its equivalents, ensuring compatibility with existing tooling:
| Grade | Thickness Range | Width Range | Coil Weight Range | Application Compatibility |
|---|---|---|---|---|
| S350GD | 0.8-12.0mm | 1000-2000mm | 5-30 tons | Construction, automotive |
| ASTM A653 Grade 80 | 0.4-6.4mm | 914-1524mm | 5-25 tons | Automotive, light structural |
| Q355GNHD | 0.8-12.0mm | 1000-2000mm | 5-30 tons | Heavy construction |
| SGHC440 | 0.8-6.0mm | 914-1829mm | 5-25 tons | Automotive, machinery |
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Customization Notes:
GNEE Steel offers S350GD coils in widths up to 2000mm, matching Chinese Q355GNHD's range for large structural parts.
For US projects, we can supply S350GD coils in 914mm (36") and 1219mm (48") widths to match ASTM A653's standard sizes.
How to Choose the Right Equivalent Grade for Your Project
Selecting the right equivalent depends on your project's location, standards, and application. Follow these guidelines:
European Projects:
Use S350GD+Z (EN 10346) for direct compliance with EU building codes (e.g., CE-marked construction).
Ideal for projects requiring strict adherence to EN standards, such as infrastructure or industrial buildings.
North American Projects:
Choose ASTM A653 Grade 80 (G90 coating) for compliance with US and Canadian standards.
Suitable for automotive plants or commercial buildings following ASTM specifications.
Asian Projects:
For China: Q355GNHD (GB/T 2518) is cost-effective and widely available locally.
For Japan/Korea: SGHC440 (JIS G3302) or SS490GAL (KS D3506) align with regional automotive and construction norms.
Global Multi-Site Projects:
Standardize on S350GD (EN 10346) for consistency, as it has recognized equivalents worldwide.
GNEE Steel can provide coils with dual certification (e.g., EN 10346 + ASTM A653) for cross-region use.
Understanding the equivalent grades of S350GD galvanized steel coil simplifies global sourcing and project compliance. Whether you need ASTM A653 for US projects, Q355GNHD for China, or the base S350GD for Europe, GNEE Steel provides compatible, high-quality coils that meet regional standards.
If you're unsure which equivalent grade fits your project, or need coils with dual certification, our team can help. Contact GNEE Steel now to discuss your regional standard requirements and get a personalized quotation for S350GD galvanized steel coil or its equivalents!
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