Form · Sizes pending
Metallic — indicative fig. M·82
Fire A1 Non-combustibleEmbodied carbon 1.74kgCO₂e/kg Low–mediumCompressive 350MPa StructuralDesign life 50yr
Cold-formed structural steel hollow sections with 350 MPa minimum yield strength, manufactured to AS/NZS 1163:2016 for superior structural performance in Australian conditions
01 Physical
Density 7850kg/m³
Specific gravity 7.85
Porosity 0%
Water absorption 0%
Hardness 150
UV resistance High
Chemical resistance Moderate
pH tolerance 4-10
Surface roughness 6.3µm
02 Mechanical
Tensile strength 430MPa
Compressive strength 350MPa
Flexural strength 350MPa
Shear strength 200MPa
Poisson's ratio 0.3
Impact resistance 27
Creep resistance Excellent
03 Thermal
Thermal conductivity 50W/m·K
Specific heat 440J/kg·K
Thermal expansion 11.7×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible
Fire resistance level 0-120 minutes
Flame spread index 0
Smoke dev. index 0
Heat release rate 0
05 Sustainability & Health
Embodied carbon 1.74
Carbon footprint 1740
Embodied energy 20.1MJ/kg
Water footprint 64L/kg
Recyclability 100%
Recycled content 25%
Renewable content 0%
Circular score 9
VOC emissions 0
Toxicity rating Non-toxic
LEED contribution 2
06 Durability · Cost · Logistics
Expected lifespan 50-100
Maintenance interval 5-10
Warranty period 10-25
Material cost (range) $1200-$2000
Material cost (per unit) $1.50-$150
Lead time 1-4 weeks
Lifecycle cost $50-$100
Annual maintenance $5-$20
Market availability Readily available
07 Assessment
Advantages
- High strength-to-weight ratio (350 MPa minimum yield)
- Excellent torsional stiffness and resistance
- Uniform stress distribution in all directions
- Superior aesthetic appeal for exposed applications
- Good weldability with appropriate procedures
- Available with various protective coatings
- Complies with Australian Standards AS/NZS 1163
- Suitable for all climate zones in Australia
- 100% recyclable at end of life
- Proven performance in extreme weather events
- Readily available from Australian suppliers
- Compatible with standard connection systems
Constraints
- Requires fire protection for rated assemblies
- Susceptible to corrosion without protective coating
- Higher initial cost than timber alternatives
- Thermal bridging considerations in building envelope
- Skilled labour required for welding and fabrication
- Transportation limitations for large diameters
- Embodied carbon considerations (1.74 tCO₂e/t)
- Limited availability in remote areas
08 Applications
A1 Structural columns and compression members
A2 Architectural exposed structural steel (AESS)
A3 Bridge construction and infrastructure
A4 High-rise building frames
A5 Transmission towers and poles
A6 Stadium and arena structures
A7 Industrial frameworks and supports
A8 Marine structures and offshore platforms
A9 Agricultural buildings and equipment
A10 Mining infrastructure
A11 Temporary structures and scaffolding
A12 Cyclone-resistant construction
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.