what does 7018 mean in welding_e7018 w1

Argon-Arc Welding Wire is a type of welding wire that offers superior performance and reliability. It is designed to be used with an arc welding process, which uses argon gas to create the weld joint. This weld joint can then be sealed by using a filler material such as steel or aluminum. The welding wire itself is made from a variety of different materials including copper, stainless steel, nickel and titanium alloys.