This part specifies the terms and definitions,classification and designation,dimensions,shape,mass,technical requirements,test methods,inspection rules,packaging,marking and inspection certificate of the continuously cold rolled high strength bake hardening steel sheet and strip,hereinafter referred to as steel sheet and strip. This part is applicable to the steel sheet and strip mainly used for making automotive outer panel,inner panel and some structural parts with the nominal thickness from 0.50 mm to 3.0 mm.