What welding wire is used for gas shielded welding of zg340 cast steel?

J50 is enough for welding wire. J50 is a carbon steel TIG welding wire. Weld metal has excellent plasticity, toughness and crack resistance, especially high impact toughness at low temperature. The weld seam is beautifully formed and has good all-position welding performance. Zg340-460 brand means that the brand of general engineering cast steel is represented by "Zg" plus two sets of numbers. Among them, "ZG" is the first letter of Chinese phonetic alphabet for cast steel, and the last two digits represent the minimum yield strength and minimum tensile strength of the material respectively. Zg340 cast steel gas shielded welding wire can be repaired with J50.