Reactor coolant pump is made of 316 austenitic stainless steel. The stainless steel electrodes in reactor coolant pump are still dependent on imports,which seriously restricts the development of nuclear power business in China. The newly developed WE316HR electrode has excellent comprehensive performance. And deposited metal has good strength,impact toughness and corrosion resistance in the as-welded state,heat-treated state and aging state. It can be used for reactor coolant pump.