Behaviour and design of high-strength concrete-filled rectangular ferritic stainless steel tubular (CFFSST) short columns subjected to axial compression

•Flat and corner material properties of the stainless steel tubes are presented.•Using ABAQUS, 3D finite element models CFFSSTs under axial compression are developed.•The fundamental behaviour of the CFFSST columns is discussed in detail..•The feasibility of current design codes to the design of the CFFSST columns is evaluated.•The proposed design model is shown to predict well the strengths of CFFSST columns.