Welding electrode materials 1) A group - Copper and copper alloy materials according to their composition and performance characteristics can be divided into four categories. â‘  the first conductivity type is high, medium hardness non-hardened alloys. Such materials only by work hardening to increase its hardness, the recrystallization temperature is lower. Kind commonly used electrode materials have copper, cadmium, copper and silver and copper. â‘¡ Class 2 as heat strengthened alloys. Deformed by the heat treatment and cooling process to obtain a good combination mechanical and physical properties. Slightly lower than the first conductivity type material, but the mechanical properties and the recrystallization temperature is far higher CO2 Welding Wire Manufacturers  than the first category is the most widely used at home and abroad electrode made ​​of copper alloy. Typical chromium copper and chromium zirconium copper and so on. â‘¢ Type 3 is heat strengthened alloys. Its mechanical properties than Class 2 material, but lower than the above two types of conductivity, a high strength, moderate conductivity of the electrode material. Commonly used cobalt beryllium copper and nickel silicon and copper. â‘£ The specific properties of Class 4 copper alloy. Some high hardness, its electrical conductivity is not high; some high conductivity, but the hardness is not very high, between them should not replace the use of. Commonly used electrode materials such Ag6% beryllium copper and silver and copper.