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1mm Galvanised Steel Sheet
1mm Galvanised Steel Sheet
1mm Galvanised Steel Sheet is a zinc-coated steel sheet with a thickness of 1 millimeter. It is produced through hot-dip or electro-galvanizing processes to form a durable zinc layer that effectively prevents oxidation and rust, improving its corrosion resistance. Common sizes include 4×8 feet sheets, and it is widely used in applications such as building roofs, wall panels, machinery enclosures, home appliance manufacturing, and agricultural greenhouses.
ZHAOJIAN offers a variety of sizes and thickness options and provides custom cutting upon request. As a professional supplier of galvanised steel sheets, ZHAOJIAN is dedicated to meeting diverse application needs with reliable quality and service.
ZHAOJIAN offers a variety of sizes and thickness options and provides custom cutting upon request. As a professional supplier of galvanised steel sheets, ZHAOJIAN is dedicated to meeting diverse application needs with reliable quality and service.
Product Specifications
| Dimension Name | Value |
| Thickness | 1 mm |
| Width*Length | Standard: 4×8 feet sheet (customizable ) |
| Weight | Approx. 24.53 kg per sheet (2500mm × 1250mm × 1mm) |
| Material | Mild Steel (Low Carbon Steel) |
| Surface Treatment | Hot-Dip Galvanised (Zinc-coated); spangle minimized; surface finish: smooth or slightly matte |
| Zinc Coating Weight | Z120–Z275 (120–275 g/m² total both sides); typically Z200 for construction grade sheets |
| Finish Type | Regular Spangle / Minimized Spangle / Zero Spangle |
| Available Forms | Sheet, Coil, Cut-to-size Plate |
| Grade (EN Standard) | EN 10346:2015 DX51D+Z |
| Grade (ASTM Standard) | ASTM A653 CS Type A/B, G90 (equivalent) |
| Chemical Composition (ASTM A653) | C: ≤ 0.20%; Mn: ≤ 0.60%; P: ≤ 0.04%; S: ≤ 0.05% |
| Chemical Composition (JIS G3302 SGCC) | C: ≤ 0.15%; Mn: ≤ 0.60%; P: ≤ 0.05%; S: ≤ 0.05% |
| Tensile Strength | 270–500 MPa |
| Yield Strength | ≥ 140 MPa (typical for DX51D); ≥ 205 MPa (typical for SGCC) |
| Elongation (L=80mm) | ≥ 22% (for 1mm thickness) |
| Formability | Good – suitable for bending, forming, stamping |
| Weldability | Fair – suitable with precautions (e.g., remove zinc coating before welding or use proper technique) |
| Machinability | Excellent – easy to cut, drill, rivet |
| Corrosion Resistance | High – suitable for outdoor use without extra coating |
| Standard Compliance | EN 10346, ASTM A653, JIS G3302 |
| Edge Options | Mill Edge / Slit Edge |
| Coating Type | Continuous hot-dip zinc coating |
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More Details
- Why Choose 1mm Galvanised Steel Sheet?
- Production Process
- Applications of 1mm Galvanised Steel Sheet
- How strong is a 1mm mild steel sheet?
Why Choose 1mm Galvanised Steel Sheet?
The 1mm galvanized steel sheet is known for its ideal balance of flexibility and protective qualities. Its slim profile makes it easy to cut, bend, and form, while the zinc coating provides a strong barrier against corrosion. This makes it a practical option for projects that require lightweight, precise fabrication, and cost-effectiveness.
Production Process
A 1mm galvanized steel sheet is made through hot-dip galvanization or electro-galvanization, depending on its use. A 1mm mild steel base is cleaned and coated with zinc to create a dense, uniform protective layer. The sheet is then flattened and cut to size — usually 4×8 feet — and can be customized to specific dimensions. This thickness is ideal for roll forming, laser cutting, and press work, providing clean edges and minimal deformation.
Applications of 1mm Galvanised Steel Sheet
- HVAC ducting and air vents: Lightweight and easy to shape
- Electrical boxes and appliance backs: Provides corrosion-resistant casing
- Partition walls and ceiling tiles: Clean look and good fire resistance
- Agricultural greenhouse panels: Withstands humidity without rust
- Light equipment housing: Thin yet protective for indoor machines
How strong is a 1mm mild steel sheet?
While not a primary structural material, a 1mm galvanized steel sheet offers adequate strength for enclosures, ducting, and panel work. It generally supports light mechanical loads and resists denting better than aluminum of similar thickness. Its strength is improved by the zinc coating, which helps protect the base metal from corrosion-related weakening.
