Square Hollow Sections (SHS), Grade 350, various sizes (Specified by size & wall thickness)
Cold-formed structural steel hollow sections with 350 MPa minimum yield strength, compliant with AS/NZS 1163:2016, offering excellent strength-to-weight ratio and torsional rigidity for structural applications
Cold-formed structural steel hollow sections with 350 MPa minimum yield strength, compliant with AS/NZS 1163:2016, offering excellent strength-to-weight ratio and torsional rigidity for structural applications
Square Hollow Sections (SHS) Grade 350 are cold-formed structural steel products manufactured through electric resistance welding (ERW) of steel strip. The material offers superior structural efficiency with constant external dimensions across weight variations, making it ideal for standardised architectural and structural details. Compliant with AS/NZS 1163:2016, these sections provide 350 MPa minimum yield strength with excellent weldability and formability characteristics.
- High strength-to-weight ratio optimising material efficiency
- Excellent torsional rigidity and buckling resistance
- Uniform external dimensions simplifying connections
- Superior aesthetic appeal for exposed applications
- Readily available across Australian markets
- Compatible with standard Australian fabrication practices
- Suitable for all climate zones including cyclonic regions
- Excellent weldability with proper procedures
- Can be hot-dip galvanised for corrosion protection
- Recyclable with established recycling infrastructure
- 01 High strength-to-weight ratio optimising material efficiency
- 02 Excellent torsional rigidity and buckling resistance
- 03 Uniform external dimensions simplifying connections
- 04 Superior aesthetic appeal for exposed applications
- 05 Readily available across Australian markets
- 01 Susceptible to corrosion without protective coating
- 02 Requires fireproofing for fire-rated applications
- 03 Internal surfaces difficult to inspect and maintain
- 04 Connection details more complex than open sections
- 05 Higher cost per tonne than open sections
- Density
- 7850 kg/m³
- Specific gravity
- 7.85
- Porosity
- 0 %
- Water absorption
- 0 %
- Hardness
- 170
- UV resistance
- moderate // With appropriate coating systems
- Chemical resistance
- moderate // Varies with environment
- pH tolerance
- 4-10
- Surface roughness
- 3.2 µm
- Tensile strength
- 430 MPa
- Compressive strength
- 350 MPa
- Flexural strength
- 350 MPa
- Shear strength
- 200 MPa
- Poisson's ratio
- 0.3
- Impact resistance
- 27
- Creep resistance
- excellent // Below 0.4 melting temperature
- Embodied carbon
- 2100 kgCO2e/tonne Value in kgCO2e/tonne = 2.10 kgCO2e/kg. A1-A3 cradle-to-gate for SHS sections.
- Carbon footprint
- 2.1
- Embodied energy
- 25 MJ/kg
- Water footprint
- 45 L/kg
- Recycled content
- 25 %
- Renewable content
- 0 %
- Circular score
- 85
- Combustibility class
- non-combustible // AS 1530.1
- Fire resistance level
- 0-240 minutes // With appropriate protection
- Flame spread index
- 0
- Smoke dev. index
- 0
- Heat release rate
- 0
- Material cost (range)
- $1200-$1800 // per tonne ex-mill
- Material cost (per unit)
- $1500/tonne // Average market price
- Lead time
- 2-6 weeks // Standard sections
- Lifecycle cost
- $3500-5000/tonne // 50-year analysis
- Annual maintenance
- $5-15/m² // Protective coating maintenance
- Market availability
- high // Readily available
- Expected lifespan
- 50-100 years // With maintenance
- Maintenance interval
- 5-10 years // Inspection and coating
- Warranty period
- 10-25 years // Coating dependent