UA – unequal-leg angles

65x50x8UA

Standard: AS/NZS 3679.1Source: InfraBuild dimensions, Hot Rolled & Structural Steel Products (ed. 9) — calculated properties
Same sections as Australia (joint AS/NZS standard). Published area (Ag) shown as a check: difference < 1.5% on every section.
xyb = 50d = 65t = 7.8t = 7.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
65mm
Widthb
50mm
Thicknesst
7.8mm
Root radiusr1
6mm

Mass and area

Mass per lengthm
6.594kg/m
Cross-sectional areaA
840mm²
Published area (standard)A pub.
840mm²
Outside perimeterP
224.9mm

Strong axis x–x

Moment of inertiaIx
0.340610⁶ mm⁴
Elastic section modulusSx
7.75110³ mm³
Radius of gyrationrx
20.14mm

Weak axis y–y

Moment of inertiaIy
0.173810⁶ mm⁴
Elastic section modulusSy
4.77910³ mm³
Radius of gyrationry
14.38mm

Principal axes

Moment of inertia, major principal axisIu
0.420810⁶ mm⁴
Moment of inertia, minor principal axisIv
0.0935610⁶ mm⁴
Radius of gyrationru
22.38mm
Radius of gyration, minor principal axisrv
10.55mm
Principal axis angleα
29.68°

Torsion and stability

Torsional constantJ
17.9710³ mm⁴

Centers

Centroidx̄
13.63mm
Centroidȳ
21.06mm

Equivalents in other standards