Abstract

A copper alloy electrical connector component has a coating thereon formed by applying a nickel layer of between about 5 μin and about 20 μin over the copper alloy; applying a copper layer of between about 7 μin and about 18 μin over the nickel layer; applying a total of between about 5 μin and about 15 μin silver layers and about 40 μin and about 80 μin of tin layers over the copper layer: and heating to the coated copper alloy electrical connector component to cause mixing of the silver and tin layers and formation of at least 8 vol % of an Ag3Sn intermetallic.

IPC Classes  ?

• H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• C22C 5/06 - Alloys based on silver
• C22C 9/02 - Alloys based on copper with tin as the next major constituent
• C22C 13/00 - Alloys based on tin
• H01R 43/16 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Abstract

A copper alloy electrical connector component has a coating thereon formed by applying a nickel layer of between about 5 ?in and about 20 ?in over the copper alloy; applying a copper layer of between about 7 ?in and about 18 ?in over the nickel layer; applying a total of between about 5 ?in and about 15 ?in silver layers and about 40 ?in and about 80 ?in of tin layers over the copper layer: and heating to the coated copper alloy electrical connector component to cause mixing of the silver and tin layers and formation of at least 8 vol% of an Ag3Sn intermetallic.

IPC Classes  ?

• C22C 5/06 - Alloys based on silver
• C22C 13/00 - Alloys based on tin
• C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• C23C 2/08 - Tin or alloys based thereon
• C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
• H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials

Abstract

A copper alloy electrical connector component has a coating thereon formed by applying a nickel layer of between about 5 μin and about 20 μin over the copper alloy; applying a copper layer of between about 7 μin and about 18 μin over the nickel layer; applying a total of between about 5 μin and about 15 μin silver layers and about 40 μin and about 80 μin of tin layers over the copper layer: and heating to the coated copper alloy electrical connector component to cause mixing of the silver and tin layers and formation of at least 8 vol% of an Ag3Sn intermetallic.

IPC Classes  ?

• C22C 5/06 - Alloys based on silver
• C22C 13/00 - Alloys based on tin
• C23C 2/08 - Tin or alloys based thereon
• H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
• C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
• C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material

Goods & Services

Metals and metal alloys

Goods & Services

Coated metal strip for further manufacture

Goods & Services

coated metal strip for further manufacture

Goods & Services

coated metal strip for further manufacture

Goods & Services

(1) Metals and metal alloys

Goods & Services

(1) Metals and metal alloys

Goods & Services

Metals and metal alloys.

Goods & Services

(1) Metals and metal alloys

Goods & Services

Metals and metal alloys

Abstract

A copper alloy having an improved combination of yield strength and electrical conductivity consists essentially of, by weight, from 1% to 2.5% of nickel, from 0.5% to 2.0% of cobalt, with a total nickel plus cobalt content of from 1.7% to 4.3%, from 0.5% to 1.5% of silicon with a ratio of (Ni+Co)/Si of between 3.5 and 6, and the balance copper and inevitable impurities wherein the wrought copper alloy has an electrical conductivity in excess of 40% IACS. A further increase in the combination of yield strength and electrical conductivity as well as enhanced resistance to stress relaxation is obtained by a further inclusion of up 1% of silver. A process to manufacture the alloys of the invention as well as other copper-nickel-silicon alloys includes the sequential steps of (a). casting the copper alloy; (b). hot working the cast copper-base alloy to effect a first reduction in cross-sectional area; (c). solutionizing the cast copper-base alloy at a temperature and for a time effective to substantially form a single phase alloy; (d). first age annealing the alloy at a temperature and for a time effective to precipitate an amount of a second phase effective to form a multi-phase alloy having silicides; (e). cold working the multi-phase alloy to effect a second reduction in cross-sectional area; and (f). second age annealing the multiphase alloy at a temperature and for a time effective to precipitate additional silicides thereby raising conductivity, wherein the second age annealing temperature is less than the first age annealing temperature.

IPC Classes  ?

• C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Goods & Services

(1) Surface treated metal or metal alloy material namely surface treated copper and copper base alloy foil, strip, sheet, bar, rod or wire.

Goods & Services

SURFACE TREATED METAL OR METAL ALLOY MATERIAL, NAMELY SURFACE TREATED COPPER AND COPPER BASE ALLOY FOIL, STRIP, SHEET, BAR, ROD OR WIRE

Goods & Services

METAL TUBING

Goods & Services

METAL TUBING

Goods & Services

COMPOSITE METAL