IPE 180 vs HEA 180
Parallel flange
IPE 180
18.8 kg/m · 180 × 91 mm
Light series
HEA 180
35.5 kg/m · 171 × 180 mm
18.8Mass G kg/m35.5
23.9Cross-section area A cm²45.3
1 317Moment of inertia Iy cm⁴2 510
101Moment of inertia Iz cm⁴925
146Section modulus Wel,y cm³294
166Section modulus Wpl,y cm³325
74.2Radius of gyration iy mm74.5
20.5Radius of gyration iz mm45.2
4.7Torsion constant It cm⁴14.7
7.3Warping constant Iw ×10³ cm⁶59.0
Bar length is the ratio to the higher value in the row.
Summary
47 %
lighter per metre
Per kilogram of steel both are equally efficient in bending, Iy/G differs by 1 %.
9.2×
stiffer on the weak axis
Plus 91 % more on the strong axis and 95 % higher plastic resistance Wpl,y.