Australian steel section properties, drawings & DXFs
Free dimensions, section properties and AS 4100 design capacities for 642 Australian structural steel sections: universal beams and columns, channels, welded sections, angles, tees, hollow sections and bar. Every section has a dimensioned drawing sheet and a DXF you can drop into your CAD software.
Hot-rolled I-sections & channels
Universal Beams28 sizes · AS/NZS 3679.1Hot-rolled I-sections with flanges narrower than the depth, used mainly as beams and rafters.Universal Columns13 sizes · AS/NZS 3679.1Hot-rolled H-sections with flange width close to the depth, used mainly as columns and heavy struts.Universal Bearing Piles3 sizes · AS/NZS 3679.1Hot-rolled H-sections with equal flange and web thickness, used for driven piles and heavy columns.Parallel Flange Channels10 sizes · AS/NZS 3679.1Hot-rolled channels with parallel flanges, used for purlins, girts, lintels, stringers and bracing.Taper Flange Beams2 sizes · AS/NZS 3679.1Small hot-rolled I-beams with tapered (8°) flanges, used for lintels, light framing and trailers.
Welded sections
Welded Beams23 sizes · AS/NZS 3679.2Three-plate welded I-sections for long spans and heavy loads beyond the universal beam range.Welded Columns18 sizes · AS/NZS 3679.2Three-plate welded H-sections for heavily loaded columns in multi-storey and industrial buildings.
Angles & tees
Equal Angles43 sizes · AS/NZS 3679.1Hot-rolled angles with equal legs, used for bracing, lintels, cleats, trusses and edge trims.Unequal Angles19 sizes · AS/NZS 3679.1Hot-rolled angles with unequal legs, used for lintels, bracing, shelf angles and connections.Beam Tees (BT)28 sizes · Cut from AS/NZS 3679.1 UBTees made by splitting a universal beam along the web centreline, used for truss chords and hangers.Column Tees (CT)13 sizes · Cut from AS/NZS 3679.1 UCTees made by splitting a universal column along the web centreline, used for heavier truss chords.
Hollow sections
Circular Hollow Sections73 sizes · AS/NZS 1163Cold-formed structural tubes, used for columns, trusses, bracing, handrails and space frames.Square Hollow Sections89 sizes · AS/NZS 1163Cold-formed square tubes, used for columns, posts, trusses, frames and balustrades.Rectangular Hollow Sections89 sizes · AS/NZS 1163Cold-formed rectangular tubes, used for beams, lintels, purlins, frames and trailer chassis.
Cold-formed purlins & girts
C Purlins (Cees)16 sizes · AS 1397 / AS/NZS 4600Cold-formed, galvanised C sections used as purlins, girts, light beams and studs. Dimensions per Lysaght Zeds & Cees.Z Purlins (Zeds)16 sizes · AS 1397 / AS/NZS 4600Cold-formed, galvanised Z sections that lap over supports for continuous purlin and girt runs. Dimensions per Lysaght Zeds & Cees.
Bars
Flat Bars113 sizes · AS/NZS 3679.1Hot-rolled flat bar, used for stiffeners, cleats, base plates, straps and general fabrication.Round Bars35 sizes · AS/NZS 3679.1Hot-rolled round bar, used for tie rods, bracing rods, pins and anchor bolts.Square Bars11 sizes · AS/NZS 3679.1Hot-rolled square bar, used for balustrade pickets, gates, keys and general fabrication.
Tools
- Beam calculator: span and loads to bending, shear and deflection checks, and the lightest sections that pass.
- Section finder: find the lightest section that meets a required φMb, φNc, Ix or depth limit.
- Lateral restraint calculator: restraint types, effective length, αm, φMb and restraint forces.
- Compare sections: up to four sections side by side, with overlaid outlines.
- Steel weight calculator: mass and paint/galvanizing area for a cutting list.
- Downloads: DXF packs per section type, plus the complete data set in CSV and JSON.
Reference
- Steel grades: yield and tensile strengths for Grade 300, 350, C350L0, C450L0 and plate.
- Australian Standards: AS 4100, AS/NZS 3679, AS/NZS 1163, AS/NZS 5131 and more.
- Steel plate: thicknesses, mass per m² and grades.
- Notation & method: symbols and how every value is calculated.
- Bolt and fillet weld capacities: AS 4100:2020 tables for 4.6, 8.8 and 10.9 bolts and SP/GP fillet welds.
About SteelInfo
SteelInfo is a free, fast reference for Australian structural steel, built for engineers, drafters, fabricators and students. It continues the idea of the long-running steelweb.info with a modern, mobile-friendly design, more properties and design capacities, and drawings you can print to scale. Properties are calculated directly from nominal dimensions using the same methods as the manufacturers' tables, and every page lists the formulas and Standards used.