IPE 80 vs IPN 80
Parallel flange
IPE 80
6.0 kg/m · 80 × 46 mm
Tapered flange
IPN 80
5.9 kg/m · 80 × 42 mm
6.0Mass G kg/m5.9
7.6Cross-section area A cm²7.6
80Moment of inertia Iy cm⁴78
8Moment of inertia Iz cm⁴6
20Section modulus Wel,y cm³20
23Section modulus Wpl,y cm³23
32.4Radius of gyration iy mm32.0
10.5Radius of gyration iz mm9.1
0.7Torsion constant It cm⁴0.9
0.1Warping constant Iw ×10³ cm⁶0.1
Bar length is the ratio to the higher value in the row.
Summary
35 %
stiffer on the weak axis
Plus 3 % more on the strong axis and 2 % higher plastic resistance Wpl,y.
Per kilogram of steel both are equally efficient in bending, Iy/G differs by 1 %.