Abstract Urban rail transport vehicle body materials， structures and common rail vehicle body structure is different in weight， are unique manufacturing process at the request of urban rail transport vehicle structure will have a direct bearing on the use of vehicles And life Urban rail transport vehicle body material， is related to operating the "safe， reliable， fast， lightweight， economic， apply" one of the major Papers by weathering steel body， stainless steel body， aluminum alloy body in the performance materials， economic aspects of life in the comprehensive analysis and comparison， stainless steel body that not only has the security of strong， good corrosion resistance characteristics， and More economical compared with other materials， stainless steel materials as a result of the urban rail transport vehicles of the body more reasonable， and the use of stainless steel materials to thin-walled structure， the way the overall carrying the body reached the lightening
