Galvanized steel is mild steel sheet with a hot-dipped zinc coating. The zinc layer sacrificially protects the base steel from corrosion. Common in HVAC ducts, outdoor enclosures, automotive panels, and any cost-sensitive sheet-metal application that must survive weather.
Mechanical and physical properties
| Property | Value |
|---|---|
| Tensile strength | 270–500 MPa |
| Yield strength | 140–350 MPa |
| Density | 7.85 g/cm³ |
| Modulus | 200 GPa |
| Zinc coating | Z100 / Z275 typical |
Welding fume
Welding galvanized steel produces zinc oxide fume — toxic. Strip the coating from weld zones (15–25 mm) and ventilate properly.
Typical applications
- HVAC ducts and air-handler bodies.
- Outdoor enclosures and cabinets.
- Automotive body panels.
- Roofing and structural sheet.
Related materials
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