Universal Beams (UB), Grade 300, various sizes (Specified by size designation)
Hot-rolled universal beam structural steel section, Grade 300 minimum yield strength, suitable for primary and secondary beams, columns and general structural applications in Australian construction
Hot-rolled universal beam structural steel section, Grade 300 minimum yield strength, suitable for primary and secondary beams, columns and general structural applications in Australian construction
Universal Beams (UB) are hot-rolled structural steel sections with an I-shaped cross-section featuring parallel flanges. Grade 300 designates a minimum yield strength of 300 MPa under AS/NZS 3679.1:2016. These sections are manufactured in Australia by InfraBuild and BlueScope through continuous casting and hot-rolling processes at approximately 1200°C. The '300PLUS' brand commonly used exceeds minimum requirements by typically 20%. UB sections range from 150UB14.0 to 610UB125 designations, where the first number indicates nominal depth in millimetres and the second indicates mass per metre.
- High strength-to-weight ratio (300 MPa minimum yield)
- 98% recyclable with infinite recyclability
- Non-combustible - suitable for all BAL zones
- Consistent quality with ACRS certification
- Readily available from multiple Victorian suppliers
- Established design standards (AS 4100:2020)
- Long service life (50-100+ years)
- Excellent weldability without preheating
- Locally manufactured reducing transport emissions
- Compatible with modular construction methods
- 01 High strength-to-weight ratio (300 MPa minimum yield)
- 02 98% recyclable with infinite recyclability
- 03 Non-combustible - suitable for all BAL zones
- 04 Consistent quality with ACRS certification
- 05 Readily available from multiple Victorian suppliers
- 01 Requires fire protection for FRL ratings
- 02 Thermal bridging requires mitigation
- 03 Corrosion protection essential in all environments
- 04 Skilled labour required for welding and erection
- 05 No inherent acoustic properties
- Density
- 7850 kg/m³
- Specific gravity
- 7.85
- Porosity
- 0 %
- Water absorption
- 0 %
- Hardness
- 160
- UV resistance
- high // Inorganic material
- Chemical resistance
- moderate // pH 4-10 stable
- pH tolerance
- 4-10
- Surface roughness
- 12.5 µm
- Tensile strength
- 440 MPa
- Compressive strength
- 440 MPa
- Flexural strength
- 300 MPa
- Shear strength
- 180 MPa
- Poisson's ratio
- 0.3
- Impact resistance
- high
- Creep resistance
- excellent // Below 400°C
- Embodied carbon
- 25.9
- Carbon footprint
- 1.85
- Embodied energy
- 38.8 MJ/kg
- Recycled content
- 82 %
- Renewable content
- 0 %
- Circular score
- 95
- Combustibility class
- non-combustible // AS 1530.1
- Fire resistance level
- 0-240 minutes // With protection systems
- Flame spread index
- 0
- Smoke dev. index
- 0
- Heat release rate
- 0
- Material cost (range)
- $1800-2200/tonne // January 2025
- Material cost (per unit)
- $43-45/m // 150UB14.0 example
- Lead time
- 1-3 days stock, 2-4 weeks custom
- Lifecycle cost
- $2500-3500/tonne // 50-year analysis
- Annual maintenance
- $5-15/m²
- Market availability
- excellent // Multiple suppliers
- Expected lifespan
- 50-100+ years
- Maintenance interval
- Annual inspection, 5-20 year recoating
- Warranty period
- 12 months materials