Determination of Critical Load in a Nonuniform Circular Steel Column under the Eccentric Axial Load

Table 2

The mechanical characteristics of the steel S355.

Yield strength	min. 355 MPa
Tensile strength	470–630 MPa
Young’s modulus	MPa
Shear modulus	MPa
Poisson’s ratio	0.3
Density	7850 kg·m^−3
Elongation	min. 22%
Hardness	max. 190 HB
Impact strength (longitudinal)	27 J at +20°C
Coefficient of linear thermal expansion	K^−1