UPN 80 vs UPE 80
Tapered flange
UPN 80
8.6 kg/m · 80 × 45 mm
Parallel flange
UPE 80
7.9 kg/m · 80 × 50 mm
8.6Mass G kg/m7.9
11.0Cross-section area A cm²10.1
106Moment of inertia Iy cm⁴107
19Moment of inertia Iz cm⁴26
27Section modulus Wel,y cm³27
32Section modulus Wpl,y cm³31
31.0Radius of gyration iy mm32.6
13.3Radius of gyration iz mm15.9
2.2Torsion constant It cm⁴1.5
0.2Warping constant Iw ×10³ cm⁶0.2
Bar length is the ratio to the higher value in the row.
Summary
4 %
higher plastic resistance
Per kilogram of steel UPE 80 is the more efficient bending section, by 9 %.
8 %
lighter per metre
Plus 31 % more on the weak axis.