Yousteel Co., Ltd. has grown by processing and distributing high carbon steel, general steel, and stainless-steel products, and is currently diversifying its sales by manufacturing copper and copper alloys (C1100, C5210, C7025, C7035, C7521, C7701, etc.) and aluminum (A1050, A3003, A5052, A6061, etc.) ― to keep up with the changing era of electric vehicles.
Yousteel’s major supply sources are two Korean companies (Poongsan and Novelis Korea), and three Chinese companies (Xinye, Boway, and Mingtai), respectively.

Tough Pitch Copper (C1100)
Tough pitch copper (C1100) is a product with excellent electrical (thermal) conductivity, featuring processability, corrosion resistance, weather resistance, and ductility. This product is widely used in various switches, relays, circuit breakers, various transformers, induction coils, automobiles, etc.

This product is a material that melts high-purity copper and removes impurities through molten metal cleaning treatment, and has high electrical conductivity and excellent mechanical and physical properties. It has recently been in the spotlight as busbar material for electric vehicles.

Oxygen-free Copper (C1010, C1020)
Oxygen-free copper has high electrical and thermal conductivity, excellent formability, hydrogen embrittlement resistance, excellent welding and solderability, and outstanding processability and drawing processability.
In the information and communication and semiconductor fields, this product is used for coaxial cables, sputtering targets, and lead frames for semiconductors. In the electrical and home appliance fields, this product is used for magnetron anodes, lead wires, ultra-fine wires, vacuum circuit breakers, crimping terminals, gaskets for vacuum equipment, and motor stops for home appliances. In the automotive field, this product is used for commutators for high-speed motors and gaskets for automobiles.

Oxygen-free copper is an alloy that maximizes ductility and minimizes hardening due to processing by containing more than 99.95% copper, less than 10ppm oxygen, and extremely restricting other impurities. It is an essential material for magnetrons in microwave ovens, commutators for high-speed motors, coaxial cables, and crimping terminals.

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