Thank u,Billm.
ENiCu-7 is stick electrode,while ERNiCu-7 is wire accordingly.The welding joint is required to resist the corrosion from cl-. After welding, I made many corrosion experiment through the method of copper sulfate-sulfuric acid test, but each time it failure to pass the test of intercystalline corrosion. I cant get the idea.would u like to give me the solution?