HEA 340 vs HEB 340
104.8Mass G kg/m134.2
133.5Cross-section area A cm²170.9
27 690Moment of inertia Iy cm⁴36 660
7 436Moment of inertia Iz cm⁴9 690
1 678Section modulus Wel,y cm³2 156
1 850Section modulus Wpl,y cm³2 408
144.0Radius of gyration iy mm146.5
74.6Radius of gyration iz mm75.3
128.7Torsion constant It cm⁴262.0
1 790.2Warping constant Iw ×10³ cm⁶2 405.6
Bar length is the ratio to the higher value in the row.
Summary
22 %
lighter per metre
Per kilogram of steel HEB 340 is the more efficient bending section, by 3 %.
30 %
stiffer on the weak axis
Plus 32 % more on the strong axis and 30 % higher plastic resistance Wpl,y.