Multipurpose copper alloys with moderate conductivity and high s

Alloys or metallic compositions – Copper base – Nickel containing

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420488, 420490, 420494, 148 3, 148 115C, 148127C, C22C 906

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active

045942218

ABSTRACT:
A multipurpose copper base alloy having an improved combination of ultimate tensile strength and electrical conductivity. The alloy can be tailored for applications such as in connectors or leadframes by processing. The alloy may be processed to provide improved bead formability at some sacrifice in strength. The alloy in the stabilized condition shows surprising improvement in stress relaxation resistance. The alloy comprises a Cu-Ni-Si alloy to which about 0.05 to about 0.45% by weight magnesium is added.

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