Form · Sizes pending
Metallic — indicative fig. M·78
Fire A1 Non-combustibleEmbodied carbon 1.85kgCO₂e/kg Low–mediumCompressive 440MPa StructuralDesign life 100yr Durable
Hot-rolled structural steel equal angle sections with minimum 300 MPa yield strength, manufactured to AS/NZS 3679.1:2016. L-shaped profiles for structural framing, bracing, and connections in Australian construction.
01 Physical
Density 7850kg/m³
Specific gravity 7.85
Porosity 0%
Water absorption 0%
Hardness 160
UV resistance excellent
Chemical resistance moderate
pH tolerance 4-10
Surface roughness 12.5µm
02 Mechanical
Tensile strength 440MPa
Compressive strength 440MPa
Flexural strength 300MPa
Shear strength 180MPa
Poisson's ratio 0.3
Impact resistance 27
Creep resistance excellent
03 Thermal
Thermal conductivity 45W/m·K
Specific heat 450J/kg·K
Thermal expansion 11.7×10⁻⁶/°C
04 Compliance & Fire First question
Combustibility class non-combustible
Fire resistance level 0/0/0
Flame spread index 0
Smoke dev. index 0
Heat release rate 0
05 Sustainability & Health
Embodied carbon 1850kgCO2e/tonne
Carbon footprint 1.85
Embodied energy 38.8MJ/kg
Water footprint 64L/kg
Recyclability 98%
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 100
Maintenance interval 5
Warranty period 10
Material cost (range) $800-1200
Material cost (per unit) $35-65
Lead time 1-3 days
Lifecycle cost $150-250
Annual maintenance $5-15
Market availability excellent
07 Assessment
Advantages
- High strength-to-weight ratio enables efficient structural design
- 98% recyclable with established recycling infrastructure
- Non-combustible material suitable for all BAL ratings
- Excellent weldability without preheating for sections <25mm
- Consistent mechanical properties with ACRS certification
- Available from stock in standard sizes across Australia
- 50+ year service life with appropriate protection
- Compatible with all standard connection methods
- Design covered by mature standards (AS 4100:2020)
- Local production reduces transport emissions and lead times
- Ductile failure mode provides warning before collapse
- Dimensionally stable with no moisture movement
Constraints
- Requires fire protection for FRL ratings in buildings
- Susceptible to corrosion without protective coatings
- Thermal bridging requires consideration in building envelope
- Skilled labour required for welding and installation
- Subject to market price fluctuations
- Higher initial cost than timber alternatives
- Requires regular maintenance in aggressive environments
- Heavy sections need mechanical handling equipment
- Prone to lateral-torsional buckling without restraint
- Noise and vibration transmission in lightweight structures
- Embodied carbon higher than timber (1.4-1.85 kg CO₂e/kg)
- Fatigue considerations for cyclic loading applications
08 Applications
A1 Structural framing members in steel construction
A2 Bracing elements in portal frames and multi-storey buildings
A3 Connection angles for beam-column joints
A4 Lintels over openings in masonry construction
A5 Support brackets for mechanical equipment
A6 Roof and floor trusses
A7 Transmission towers and communication masts
A8 Industrial racking and shelving systems
A9 Architectural features and exposed steelwork
A10 Temporary works and scaffolding components
A11 Mining and infrastructure applications
A12 Agricultural buildings and sheds
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.