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AssigneeSky Aluminium Co., Ltd.
InventorsToshiki Muramatsu, Mamoru Matsuo, Shigeo Tsuchida, Hiroyoshi Gungi
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Herein disclosed is a material for making conductive parts such as lead frames or connectors of semiconductor elements or integrated circuits (i.e., ICs). The material is an aluminum-based alloy containing 0.3 to 4.0 wt. % of manganese and 0.10 to 5.0 wt. % of magnesium, the remainder being aluminum and unavoidable impurities. The material may additionally contain: at least one of copper and zinc; and/or at least one of chromium, zirconium, vanadium and nickel, if necessary. The material having the composition specified above can be made at a reasonable cost with excellent softening resistance, electric and thermal conductivities, solderability and platability, a high mechanical strength, and an excellent bending repeatability.
An electrical rolled strip of aluminum base alloy, consisting essentially of 0.3 to 4.0% by weight of manganese and 0.10 to 5.0% by weight of magnesium, the balance being aluminum, said electrical rolled strip having improved zincate processing, press forming, bending repeatability and etching properties.
An electrical rolled strip of aluminum base alloy, consisting essentially of 0.3 to 4.0% of maganese, 0.10 to 5.0% of magnesium, and at least one of 0.01 to 0.30% by weight of chromium, 0.01 to 0.30% by weight of zirconium, 0.01 to 0.30% by weight of vanadium, and 0.01 to 5.7% by weight of nickel, the balance being aluminum, said electrical rolled strip having improved zincate processing, press forming, bending repeatability and etching properties.
An electrical rolled strip of aluminum base alloy, consisting essentially of 0.3 to 4.0% by weight of manganese;
An electrical rolled strip of aluminum base alloy, consisting essentially of 0.3 to 4.0% by weight of manganese, 0.10 to 5.0% by weight of magnesium, and 0.10 to 3.0 by weight of copper, the balance being aluminum, said electrical rolled strip having improved zincate processing, press forming, bending repeatability and etching properties.
An electrical rolled strip of aluminum base alloy, consisting essentially of 0.3 to 4.0% by weight of manganese, 0.10 to 5.0% by weight of magnesium, 0.01 to 3.0% by weight of copper, and 0.01 to 3.0% by weight of zinc, the balance being aluminum, said electrical rolled strip having improved zincate processing, press forming, bending repeatability and etching properties.
Dependencies are inferred from the claim text.