Molybdenum (Mo) metal is primarily used as a high-performance electrode material in resistance spot welding, particularly for applications requiring superior durability, high melting points, and good thermal/electrical conductivity. Molybdenum electrodes are ideal for welding non-ferrous metals like copper, aluminum, and nickel due to their high hardness and high-temperature performance. Used frequently in industries requiring precise welding, such as for copper braids or electronic components.