Cold-formed stainless steel is often used in the design and fabrication of passenger rail vehicle car body structures. It is attractive because of its corrosion resistance and the high yield strength in the quarter- and half-hard conditions. One of the complications in designing with this material is its anisotropic properties: the yield strength and stress-strain curve depend upon whether the material is loaded in tension or compression and upon the loading direction relative to the material rolling direction. This phenomenon has been known for some time in the rail industry, and is also well known in the general structural community. This paper is a review of the mechanical and metallurgical properties of cold-formed stainless steel and of current design approaches related to buckling of members made from this product form.

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