Our aluminum welding rod contains aluminum. It can be widely used in electric power, chemical and other industries, suitable for aluminum, stainless steel galvanized steel, galvanized cast iron, high strength copper and so on. Its use is simple: clean the base metal with a wire brush, sandpaper, grinder, etc. Heat the base metal with a propane torch. Do not heat the rod for a long time. Once the base metal reaches 716f, the rod will begin to flow. Make repairs and don't forget to wear protective glasses and gloves. And very strong.