EA – equal-leg angles

40x40x3EA

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 = 40d = 40t = 3t = 3
Cross-section, to scaledimensions in mm

Dimensions

Depthd
40mm
Widthb
40mm
Thicknesst
3mm
Root radiusr1
5mm

Mass and area

Mass per lengthm
1.834kg/m
Cross-sectional areaA
233.7mm²
Published area (standard)A pub.
233mm²
Outside perimeterP
155.7mm

Strong axis x–x

Moment of inertiaIx
0.0348910⁶ mm⁴
Elastic section modulusSx
1.19610³ mm³
Radius of gyrationrx
12.22mm

Weak axis y–y

Moment of inertiaIy
0.0348910⁶ mm⁴
Elastic section modulusSy
1.19610³ mm³
Radius of gyrationry
12.22mm

Principal axes

Moment of inertia, major principal axisIu
0.0553210⁶ mm⁴
Moment of inertia, minor principal axisIv
0.0144610⁶ mm⁴
Radius of gyrationru
15.39mm
Radius of gyration, minor principal axisrv
7.865mm
Principal axis angleα
45°

Torsion and stability

Torsional constantJ
0.793210³ mm⁴

Centers

Centroidx̄
10.84mm
Centroidȳ
10.84mm

Equivalents in other standards