Form · Sizes pending
Metallic — indicative fig. M·77
Fire A1 Non-combustibleEmbodied carbon 1.74kgCO₂e/kg Low–mediumCompressive 280MPa StructuralDesign life 100yr Durable
Hot-rolled structural steel C-sections with parallel flanges, manufactured to AS/NZS 3679.1 Grade 300, providing 280 MPa minimum yield strength for structural framing applications
01 Physical
Density 7850kg/m³
Specific gravity 7.85
Porosity 0%
Water absorption 0%
Hardness 150
UV resistance High with appropriate coating
Chemical resistance Moderate - requires protection in aggressive environments
pH tolerance 5-11 (with coating)
Surface roughness 12.5µm
02 Mechanical
Tensile strength 440MPa
Compressive strength 280MPa
Flexural strength 280MPa
Shear strength 162MPa
Poisson's ratio 0.29
Impact resistance 27
Creep resistance Negligible below 400°C
03 Thermal
Thermal conductivity 50W/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 Requires protection for FRL
Flame spread index 0
Smoke dev. index 0
Heat release rate 0
05 Sustainability & Health
Embodied carbon 1.74
Carbon footprint 1740
Embodied energy 20100MJ/kg
Water footprint 3.3L/kg
Recyclability 100%
Recycled content 15%
Renewable content 0%
Circular score 85
VOC emissions 0
Toxicity rating Non-toxic
LEED contribution 2
06 Durability · Cost · Logistics
Expected lifespan 100+
Maintenance interval 5-10
Warranty period 10-25
Material cost (range) 1200-1800
Material cost (per unit) 1500
Lead time 2-6 weeks
Lifecycle cost 4500-6000
Annual maintenance 20-50
Market availability Excellent - locally manufactured
07 Assessment
Advantages
- Excellent strength-to-weight ratio
- Parallel flanges simplify connections
- Consistent mechanical properties
- High weldability (CEV ≤0.44)
- 100% recyclable
- Available in long lengths (up to 18m)
- Australian manufactured (300PLUS)
- Suitable for composite construction
- Good fatigue resistance
- Predictable structural behaviour
Constraints
- Requires fire protection for FRL ratings
- Susceptible to corrosion without protection
- Lateral-torsional buckling considerations
- Thermal bridging in building envelope
- Higher initial cost than timber
- Requires skilled fabrication and erection
- Limited acoustic damping properties
- Connection complexity for moment frames
08 Applications
A1 Portal frame construction
A2 Floor and roof beams
A3 Machinery support frames
A4 Conveyor structures
A5 Crane runway beams
A6 Vehicle chassis
A7 Structural bracing
A8 Composite floor systems
A9 Industrial mezzanines
A10 Bridge components
09 Sources & Standards
Sources pending — citations for this material are not yet recorded. Verify all figures against manufacturer data and current standards before specifying.