WELDING MATERIAL AND ULTRA HIGH STRENGTH WELD METAL PART HAVING EXCELLENT IMPACT TOUGHNESS AT LOW TEMPERATURES AND USING WELDING MATERIAL

摘要

According to an aspect of the present invention, the present invention provides a welding material which solves a problem that the strength of a weld metal part is reduced due to different strength of a base material and a welding material when the base material having the high strength is welded. In addition, the present invention provides a high strength weld metal part having excellent impact toughness at low temperatures.;COPYRIGHT KIPO 2014