Wieland K09 is an oxygen-free copper with excellent electrical conductivity. It is often used when good weldability and hard soldering capabilities are required. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: CU-659. Producer or source: Wieland Metals Inc., Wieland-Werke AG.