EA – equal-leg angles
55x55x5EA
Same sections as Australia (joint AS/NZS standard). Published area (Ag) shown as a check: difference < 1.5% on every section.
Dimensions
- Depthd
- 55mm
- Widthb
- 55mm
- Thicknesst
- 4.6mm
- Root radiusr1
- 6mm
Mass and area
- Mass per lengthm
- 3.836kg/m
- Cross-sectional areaA
- 488.7mm²
- Published area (standard)A pub.
- 489mm²
- Outside perimeterP
- 214.9mm
Strong axis x–x
- Moment of inertiaIx
- 0.138510⁶ mm⁴
- Elastic section modulusSx
- 3.47910³ mm³
- Radius of gyrationrx
- 16.84mm
Weak axis y–y
- Moment of inertiaIy
- 0.138510⁶ mm⁴
- Elastic section modulusSy
- 3.47910³ mm³
- Radius of gyrationry
- 16.84mm
Principal axes
- Moment of inertia, major principal axisIu
- 0.2210⁶ mm⁴
- Moment of inertia, minor principal axisIv
- 0.0570610⁶ mm⁴
- Radius of gyrationru
- 21.22mm
- Radius of gyration, minor principal axisrv
- 10.81mm
- Principal axis angleα
- 45°
Torsion and stability
- Torsional constantJ
- 3.75410³ mm⁴
Centers
- Centroidx̄
- 15.19mm
- Centroidȳ
- 15.19mm