Galvanized Steel Coil
Looking for detailed chemical composition data of S550GD galvanized steel coil? You've come to the right place. As a direct factory with 20 years of structural steel experience, GNEE Steel provides accurate insights into the Chemical Composition Of S550GD Galvanized Steel Coil along with factory prices. In this guide, we'll explain key elements, standards compliance, and how composition affects performance.
Galvanized Steel Coil
S550GD galvanized steel coil is a high-strength structural material with a hot-dip zinc coating. It belongs to the EN 10346 standard series, widely used in construction, infrastructure, and machinery manufacturing.
Common galvanized steel grades include S280GD, S350GD, S420GD, and S550GD. Among them, S550GD has the highest yield strength, thanks to its optimized chemical composition.
EN 10346 Standard for Chemical Composition Of S550GD Galvanized Steel Coil
The Chemical Composition Of S550GD Galvanized Steel Coil strictly follows EN 10346, the European standard for hot-dip galvanized structural steel. This standard defines maximum limits for each element to ensure consistent performance:
| Element | EN 10346 Maximum Content (%) | Role in Steel Performance |
|---|---|---|
| Carbon (C) | 0.18 | Enhances strength while maintaining weldability |
| Manganese (Mn) | 2.00 | Improves tensile strength and formability |
| Silicon (Si) | 0.50 | Aids deoxidation and boosts corrosion resistance |
| Phosphorus (P) | 0.030 | Controlled to prevent brittleness, especially in cold conditions |
| Sulfur (S) | 0.025 | Minimized to reduce cracking risks during processing |
| Aluminum (Al) | 0.020 | Promotes fine grain structure for better toughness |
| Nitrogen (N) | 0.015 | Stabilized to avoid aging effects |
GNEE Steel's production strictly adheres to these limits, with regular testing to ensure compliance.
How Chemical Composition Affects S550GD Coil Performance
Every element in the Chemical Composition Of S550GD Galvanized Steel Coil plays a critical role in its performance:
- Carbon (C): Higher carbon content increases strength but can reduce weldability. The 0.18% max limit balances strength and processability.
- Manganese (Mn): Acts as a strengthener and deoxidizer. The 2.00% limit ensures optimal tensile strength without excessive hardness.
- Silicon (Si): Improves the steel's response to galvanization, enhancing coating adhesion and corrosion resistance.
- Phosphorus (P): Even small amounts can cause brittleness. The 0.030% limit prevents this issue in low-temperature environments.
Sulfur (S): Forms harmful inclusions that reduce ductility. Keeping it below 0.025% ensures good forming properties.
This balanced composition is why S550GD coils excel in heavy-load structural applications.
Mechanical Properties Linked to Chemical Composition
The Chemical Composition Of S550GD Galvanized Steel Coil directly influences its mechanical properties. Here's how they correlate:
| Mechanical Property | Standard Requirement | How Chemical Composition Contributes |
|---|---|---|
| Yield Strength | ≥550 MPa | Carbon and manganese provide primary strength |
| Tensile Strength | 600-730 MPa | Manganese and controlled carbon content balance strength and ductility |
| Elongation | ≥12% | Low sulfur and phosphorus levels maintain ductility |
| Impact Toughness | ≥27 J (-40°C) | Aluminum-refined grain structure enhances low-temperature toughness |
At GNEE Steel, we test both composition and mechanical properties for every production batch.
Standard Sizes of S550GD Galvanized Steel Coil
While composition is core, size compatibility matters for projects. GNEE Steel offers S550GD Galvanized Steel Coil in standard sizes:
| Thickness | Width Range | Inner Diameter | Coil Weight | Zinc Coating Weight |
|---|---|---|---|---|
| 0.8mm-3.0mm | 900mm-1250mm | 508mm | 5-15 tons | 60-180 g/m² |
| 3.1mm-6.0mm | 1000mm-1500mm | 508mm | 8-20 tons | 80-220 g/m² |
| 6.1mm-12.0mm | 1250mm-1800mm | 508mm | 10-25 tons | 100-275 g/m² |
Custom sizes are available with a minimum order quantity of 5 tons.
Understanding the Chemical Composition Of S550GD Galvanized Steel Coil is key to selecting the right material for structural projects. Its balanced element ratios, compliant with EN 10346, deliver the strength, ductility, and corrosion resistance needed for demanding applications.
GNEE Steel ensures every S550GD coil meets composition standards, with complete testing documentation. Contact GNEE Steel today to get a detailed chemical analysis report and quotation for S550GD Galvanized Steel Coil!
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Galvanized Steel Coil