Peter A Robinson

US Patent:

6632300, Oct 14, 2003

Filed:

Jun 12, 2001

Appl. No.:

09/879616

Inventors:

John F. Breedis - Trumbull CT
Dennis R. Brauer - Brighton IL
Peter W. Robinson - Branford CT

Assignee:

Olin Corporation - New Haven CT

International Classification:

C22C 904

US Classification:

148434, 148433, 420477, 420478, 420479, 420480, 420481, 420482, 420483, 420484

Abstract:

A copper alloy having improved stress relaxation resistance is formed from a copper base alloy that consists, by weight, essentially of 1. 8%-3. 0% iron, 0. 01%-1. 0% zinc, 0. 001 %-0. 25% phosphorus, 0. 1 %-0. 35% magnesium and the balance is copper and unavoidable impurities. When compared to other copper base alloys that include iron, zinc and phosphorous, the disclosed alloy has improved resistance to stress relaxation. In addition, directionality of stress relaxation resistance (where stress relaxation resistance is typically poorer in a transverse strip direction relative to a longitudinal strip direction for a copper alloy that is strengthened by cold rolling) is reduced to being nearly equivalent, regardless of strip direction. The alloy is particularly useful for electronic applications, such as being formed into an electrical connectors.

Address:

122 Vining Run, Camden, DE 19934

Phone:

(302)6980231

VIN:

JNRAS08WX8X208476

Make:

INFINITI

Model:

FX35

Year:

2008