Introduction:
Galvanized steel is simply carbon steel coated with a layer of zinc on both sides. The zinc coating helps protect the steel from corrosion, offering long-lasting durability in various environments. There are two main ways to produce galvanized steel: continuous hot dipping and electro-galvanizing.
The zinc coating acts as a protective barrier between the steel and the surrounding environment. It not only prevents direct contact with air and water but also protects the steel through sacrificial protection. In this process, the zinc corrodes before the steel, ensuring the steel remains intact. This is especially important for areas that may have cut edges, drill holes, or other exposed parts.
Applications:
Galvanized steel is widely used in:
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Architecture (e.g., roofing, walls)
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Household appliances (e.g., refrigerators, washing machines)
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Automobiles (e.g., body panels, exhaust systems)
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Industrial instruments (e.g., equipment frames, pipes)
Chemical Composition and Mechanical Properties of Galvanized Steel Coil:
Chemical Composition:
| Element | Content |
|---|---|
| Carbon (C) | 0.22 max |
| Manganese (Mn) | 1.60 max |
| Phosphorus (P) | 0.05 max |
| Sulfur (S) | 0.05 max |
| Silicon (Si) | 0.05 max |
Mechanical Properties:
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Grade: S235
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Tensile Strength: 340-470 MPa
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Yield Point: ≥235 MPa
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Elongation after Breaking: ≥24%
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Impact Energy (Akv at 20°C): ≥27 J
Advantages of Galvanized Steel:
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Attractive Appearance: A smooth, shiny metallic finish that doesn’t have deep spangles.
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Durability: The zinc coating prevents color changes caused by surface oxidation, ensuring a long-lasting appearance and protection.
In short, galvanized steel provides an effective and cost-efficient solution for protecting steel from rust and corrosion, making it ideal for a wide range of industries.
Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.