Galvanised Steel Sheet (0.55mm, 0.75mm, 0.95mm, 1.15mm, 1.55mm, 1.95mm, 3.00mm)
Hot-dip galvanised steel sheet conforming to AS 1397:2021, featuring zinc coating for superior corrosion resistance. Available in thicknesses from 0.55mm to 3.00mm, suitable for roofing, cladding, and structural applications across all Australian climate zones.
Hot-dip galvanised steel sheet conforming to AS 1397:2021, featuring zinc coating for superior corrosion resistance. Available in thicknesses from 0.55mm to 3.00mm, suitable for roofing, cladding, and structural applications across all Australian climate zones.
Galvanised steel sheet is manufactured from mild steel substrate with a protective zinc coating applied through continuous hot-dip galvanisation process. The zinc coating acts as a sacrificial anode, providing cathodic protection to the steel base. Available in various coating masses (Z275-Z600) designated by total coating weight in g/m². The material demonstrates excellent formability, weldability, and long-term durability in Australian conditions including marine, tropical, and bushfire-prone environments.
- Non-combustible with Spread of Flame Index of 0
- Excellent corrosion resistance via sacrificial zinc protection
- Suitable for all BAL zones including BAL-FZ
- 90% recycling rate in Australia
- No maintenance required for 15-25 years in most environments
- Self-healing properties through zinc migration
- Readily available from Australian manufacturers
- Cost-effective life cycle performance
- Compatible with standard metalworking tools
- Magnetic properties enable easy separation for recycling
- 01 Non-combustible with Spread of Flame Index of 0
- 02 Excellent corrosion resistance via sacrificial zinc protection
- 03 Suitable for all BAL zones including BAL-FZ
- 04 90% recycling rate in Australia
- 05 No maintenance required for 15-25 years in most environments
- 01 Zinc fumes toxic when heated above 250°C during welding
- 02 Limited aesthetic options compared to pre-painted steel
- 03 White rust formation possible in poor storage conditions
- 04 Incompatible with copper and lead (galvanic corrosion)
- 05 Weight penalty compared to aluminium alternatives
- Density
- 7850 kg/m³
- Specific gravity
- 7.85
- Porosity
- 0 %
- Water absorption
- 0 %
- Hardness
- 120
- UV resistance
- excellent // Zinc oxide patina provides UV protection
- Chemical resistance
- good // pH 6-12 optimal range
- pH tolerance
- 6-12
- Surface roughness
- 1.5 µm
- Tensile strength
- 410 MPa
- Compressive strength
- 250 MPa
- Flexural strength
- 450 MPa
- Shear strength
- 260 MPa
- Poisson's ratio
- 0.3
- Impact resistance
- moderate // Charpy impact varies with temperature
- Creep resistance
- excellent // Minimal creep at ambient temperatures
- Embodied carbon
- 2.2
- Carbon footprint
- 1850
- Embodied energy
- 25 MJ/kg
- Water footprint
- 45 L/kg
- Recycled content
- 25 %
- Renewable content
- 0 %
- Circular score
- 8.5
- Combustibility class
- non-combustible // NCC classification
- Fire resistance level
- non-combustible // AS 1530.1 classification
- Flame spread index
- 0
- Smoke dev. index
- 2
- Heat release rate
- 0
- Material cost (range)
- 45-85 // AUD/m² depending on thickness
- Material cost (per unit)
- 65
- Lead time
- 1-5 // Days for standard products
- Lifecycle cost
- 120
- Annual maintenance
- 0
- Market availability
- excellent // Readily available nationally
- Expected lifespan
- 50
- Maintenance interval
- 15
- Warranty period
- 15