Abstract
The maximum strength and deformation capacity of cold-formed rectangular hollow section members subject to local buckling under axial compression were investigated experimentally. The influence of residual stresses due to cold-working on the strength and deformability was made clear through the comparison of these characteristic values of cold-formed tubes and those of the corresponding stress-relieved tubes. Finally, the empirical formulas which predict the local buckling strength and the deformation capacity of cold-formed rectangular hollow section members under axial compression were derived through the statistical approach.