Equal-leg angles

L 180x180x18

Standard: Mixed range: EN 10056-1:1998 (calculation convention, 24 of 42 sizes); other sizes DIN 1028, EN 10056-1:2017, manufacturersSource: Geometry: Steel Section Database (MIT) — calculated properties (exact engine)
xyb = 180d = 180t = 18t = 18
Cross-section, to scaledimensions in mm

Dimensions

Depthd
180mm
Widthb
180mm
Thicknesst
18mm
Root radiusr1
18mm

Mass and area

Mass per lengthm
48.6kg/m
Cross-sectional areaA
6,191mm²
Outside perimeterP
704.5mm

Strong axis x–x

Moment of inertiaIx
18.6610⁶ mm⁴
Elastic section modulusSx
144.710³ mm³
Radius of gyrationrx
54.9mm

Weak axis y–y

Moment of inertiaIy
18.6610⁶ mm⁴
Elastic section modulusSy
144.710³ mm³
Radius of gyrationry
54.9mm

Principal axes

Moment of inertia, major principal axisIu
29.6310⁶ mm⁴
Moment of inertia, minor principal axisIv
7.68310⁶ mm⁴
Radius of gyrationru
69.18mm
Radius of gyration, minor principal axisrv
35.23mm
Principal axis angleα
45°

Torsion and stability

Torsional constantJ
711.710³ mm⁴

Centers

Centroidx̄
51.04mm
Centroidȳ
51.04mm

Equivalents in other standards