Form · Sizes pending
Metallic — indicative fig. M·79
Fire A1 Non-combustibleEmbodied carbon 2.10kgCO₂e/kg Medium–highCompressive 300MPa StructuralDesign life 50yr
Hot-rolled structural steel angle sections with unequal legs, manufactured to AS/NZS 3679.1:2016 Grade 300 with minimum yield strength of 300 MPa
01 Physical
Density 7850kg/m³
Specific gravity 7.85
Porosity 0%
Water absorption 0%
Hardness 150HB
UV resistance Excellent with coating
Chemical resistance Good with protection
pH tolerance 4 – 10pH
Surface roughness 6.3μm Ra
02 Mechanical
Tensile strength 440MPa
Compressive strength 300MPa
Flexural strength 300MPa
Shear strength 180MPa
Poisson's ratio 0.3
Impact resistance 27J at 0°C
Creep resistance Negligible below 400°C
03 Thermal
Thermal conductivity 50W/m·K
Specific heat 480J/kg·K
Thermal expansion 12×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class Non-combustible
Fire resistance level 30-240 minutes with protectionminutes
Ignition temp N/A - Non-combustible°C
Flame spread index 0
Smoke dev. index 0
Heat release rate 0kW/m²
05 Sustainability & Health
Embodied carbon 2100kg CO₂e/tonne
Carbon footprint 2.1kg CO₂e/kg
Embodied energy 32MJ/kg
Water footprint 70L/kg
Recyclability 90%
Recycled content 25%
Renewable content 0%
Circular score 85%
VOC emissions 0g/L
Toxicity rating Non-toxic
LEED contribution 2points
06 Durability · Cost · Logistics
Expected lifespan 50-100+ years
Maintenance interval 5-10 years inspection
Warranty period 10 years coating
Material cost (range) 1200 – 1800AUD/tonne
Material cost (per unit) 1500AUD/tonne
Lead time 1-3 weeks standard sizes
Lifecycle cost 2800AUD/tonne
Annual maintenance 20AUD/m²/year
Market availability Readily available
07 Assessment
Advantages
- Asymmetric design suits specific loading conditions
- 300 MPa minimum yield strength provides reliable performance
- AS/NZS 3679.1:2016 compliance ensures quality
- ACRS certification available for quality assurance
- 90% recyclability supports circular economy
- Wide range of standard sizes available
- Compatible with all standard connection methods
- Suitable for all Australian climate zones with protection
- Local manufacturing ensures supply chain resilience
- Lower embodied carbon than concrete alternatives
Constraints
- Requires protective coating for corrosion resistance
- Fire protection needed for rated assemblies
- Asymmetric shape complicates some connections
- Higher initial cost than timber alternatives
- Thermal bridging in building envelope applications
- Specialised equipment needed for larger sections
- Weight considerations for transport and handling
- Professional design required for structural applications
- Limited availability of very large sections
- Fabrication tolerances require careful detailing
08 Applications
A1 Structural framing in commercial and industrial buildings
A2 Bracing members in steel structures
A3 Lintels and shelf angles in masonry construction
A4 Support brackets for mechanical equipment
A5 Transmission tower construction
A6 Agricultural and mining equipment frames
A7 Renewable energy infrastructure components
A8 Bridge and infrastructure supports
A9 Architectural features and facades
A10 Crane runway beams and supports
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.