Mechanical Properties of Cold -Formed Steel Under Tensile Testing

Material properties play an important role in the performance of structural members. Cold-formed steel has been used in bridge construction, drainage facilities, a metal building of industries, residential construction, automotive and its applications. Cold-form steel structure joints generally use the self-drilling screw to easy installing and providing a rapid joint. Nowadays, a premature collapse of cold- formed steel structures could be occurred, though during the installation process. This paper shows the mechanical properties results by tensile testing of cold-formed steel, based on ASTM E8 Code. The results testing shows the yield strengths of the cold-formed steels range from 566 to 575 MPa. The ductility ratio of cold-formed steel is from 1.1 to 1.2. The effects of cold work on formed steel members depend largely upon the spread between the tensile and the yield strength of the virgin material. The strength of cold-formed steel structural members depends on the yield point or yield strength, except in connections and in those cases where elastic local buckling or overall buckling is critical.