Electrolytic Copper


SMM manufactures electrolytic copper by refining copper concentrate mainly imported from South American countries in flash furnaces in the Toyo Smelter & Refinery, which is refined to 99.99% purity or higher after going through the converter, refining furnace, and electrolytic plant. Since our electrolytic copper is superior in electric conductivity and workability, it can be used for a wide array of applications, from cutting-edge electronics parts to various electric wires, including general purpose wire. Additionally, due to its superior thermal conductivity coupled with superior workability, it is also used for various copper alloy fabricated products, including copper pipes for air conditioners. It is also heavily used for plated alloys aiming for a high-class image of metals.

Quality characteristics

99.99% or higher


  1. Various electric wires, from general purpose wire to extra-fine wire
  2. Copper alloy fabricated products such as plates, ribbons, and tubes
  3. Alloys, plating materials, casting materials