FLASH BUTT WELDING MEMBER AND FLASH BUTT WELDING METHOD FOR PROVIDING WHEEL RIM WELD PART WITH EXCELLENT FORMABILITY

Provided are a flash butt welding member and a flash butt welding method for providing a wheel rim weld part with excellent formability. The flash butt welding member of the present invention satisfies that a weld part has a hardness of 220-270 Hv, and d2, when the total length of an upset part constituting the weld part is L.