Patent · US Expired

Processing of copper alloys and product

US4724013A · kind A · utility

9Cited by

1References

8Claims

0Family size

Assignee

BRUSH WELLMAN, INC. · US

Inventors

Nathan Church · Chagrin Falls, US
W. Raymond Cribb · Mentor, US
John C. Harkness · Lakewood, US

Key dates

Filing date	Nov 5, 1985
Grant date	Feb 9, 1988
Priority date	—
Expiry date	Nov 5, 2005

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K35/222
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

This invention is directed to the treatment of copper beryllium alloys, and to articles and parts made therefrom, containing special small amounts of beryllium and cobalt, e.g., about 0.2% to about 0.5% beryllium and about 0.2% to about 1% or about 1.5% or about 2% cobalt, which imparts to these alloys a superior combination of stress relaxation resistance, formability, ductility, conductivity and strength by the process of solution annealing, cold working at least about 50% or at least about 70% or 90% or more and age hardening.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.