UB · Universal Beams

310UB46.2

310UB46.2 Universal Beam

  • AS/NZS 3679.1:2016
  • Design: AS 4100:2020
  • Unverified
Weight Surface area Equivalents XML
Mass46.54kg/m
A5,928mm²
Ix100.26810⁶ mm⁴
Zx653.210³ mm³
310UB46.2 cross-section
Cross-section drawn to scale from nominal dimensions. Cross-hair marks the centroid.

Dimensions

ParameterSymbolValueUnitData
Depthd307.0mmU
Flange widthbf166.0mmU
Flange thicknesstf11.8mmU
Web thicknesstw6.7mmU
Root radiusr111.4mmU

Section Properties

ParameterSymbolValueUnitData
General
Mass per metre mass46.54kg/mC
Gross area A5,928mm²C
About x-axis (major)
Second moment of area Ix Ix100.26810⁶ mm⁴C
Elastic section modulus Zx (min) Zx653.210³ mm³C
Plastic section modulus Sx Sx728.310³ mm³C
Radius of gyration rx rx130.1mmC
About y-axis (minor)
Second moment of area Iy Iy9.00810⁶ mm⁴C
Elastic section modulus Zy (min) Zy108.510³ mm³C
Plastic section modulus Sy Sy166.410³ mm³C
Radius of gyration ry ry39.0mmC
Torsion & warping
Torsion constant JApproximate thin-walled value, fillets neglected J0.21010⁶ mm⁴C
Warping constant IwIy·(d−tf)²/4 Iw196.2410⁹ mm⁶C
Surface area
External surface area extArea1.245m²/mC

Nominal designation mass 46.20 kg/m; calculated 46.54 kg/m (+0.7%).

Steel Grades

GradeStandard fy MPafu MPa NoteData
300 AS/NZS 3679.1:2016 300 440 Typical grade supplied – confirm availability with supplier U

Strengths shown for governing thickness t = 11.8 mm. Density 7850 kg/m³, E = 200 000 MPa.

Source & Verification

Source publisher
Pending verification – nominal dimensions entered by the application developer
Source document
AS/NZS 3679.1:2016 Structural steel – Hot-rolled bars and sections
Edition
2016
Publication year
2016
Page reference
—
Last updated
2026-10-12
Verification status
Unverified

Nominal dimensions require verification against the current edition of the product standard and the manufacturer catalogue before design use. Properties are calculated by this application from the nominal dimensions.

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