Kobelco Alloy KFC has very high conductivity for leadframe applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. and bend strength. It also includes information on forming. Filing Code: Cu-853. Producer or source: Kobe Steel Ltd, Aluminum and Copper Business.

Wieland-K30 is a nondeoxidized copper with acceptable electrical and thermal conductivities. It is often called electrolytic tough pitch copper. Typical applications include lead frames and automotive connectors. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming and heat treating. Filing Code: CU-709. Producer or source: Wieland Metals Inc., Wieland-Werke AG.

Wieland-K81 is a copper-tin alloy with strength and cold working characteristics that are useful in making lead-frames. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: CU-667. Producer or source: Wieland Metals Inc., Wieland-Werke AG.

WRM alloy 5058 is a phosphor-bronze alloy with a good combination of electrical conductivity, tensile strength, and stress-relaxation resistance. Typical applications include lead frames, contact springs, and fuse clips. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on forming. Filing Code: CU-638. Producer or source: Waterbury Rolling Mills Inc.

WRM alloy 4112 is a modified copper-zinc-tin (Cu-Zn-Sn) alloy with improved conductivity, high strength, and improved forming ability. Typical applications are lead frames and contact springs. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: CU-637. Producer or source: Waterbury Rolling Mills Inc.