electrode block: 1.material :CuCrZr(C18150), CuZr(C15000),CuBeNi(C17510),CuNi2SiCr(C18000) and CuCr(C18200) 2. size: as required We have a history of more than 27years.Its quality and price is very good. The products have been exported to many countries all over the world