US2261975A - Copper-base alloy - Google Patents

Description

. about 12%,

include such one or more Patented Nov. 11, 1941 COPPER-BASE ALLOY Donald K. Crampton, Marion, and Henry Burghofi, Waterbury, Conn., assignors to Chase Incorporated, Waterbury,

Brass & Copper Co.

Conn, a corporation No Drawing. Application July 31, 1940, Serial No. 349,015

3 Claims.

This invention relates to improvements in agehardenable copper-base alloys.

This application is a continuation-in-part of our One object of this invention is to provide improved age-hardenabie copper-base alloys having high yield-strength and tensile strength, and good ductility.

Other objects of this invention will appear from the present disclosure.

We have invented improved age-hardenable copper-base alloys having zinc from about 12% to about 30%, nickel from about 4% to about 3%, phosphorus from about 0.03% to about 0.4%, with the phosphorus being from about V to about of the nickel by weight, and the balance substantially of copper. One preferred. alloy contains zinc about 20%, nickel about 1%, phosphorus about 0.2% and the balance substantially of copper. Another preferred alloy has zinc nickel about 1%, phosphorus about 0.2 and the balance substantially of copper.

Expressions such as "the balance or remainder substantially of copper, etc., are intended to additional elements in such substantially-innocuous amounts as do not seriously impair the essential properties of the alloy, that is, in such amounts as do not essentially change the nature of'the alloy.

These alloys are age-hardening and possess application Serial No. 269,780, filed April 24,-

- istics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to-be embraced therein.

We claim:

1. An age-hardenable copper-base alloy-comprising: zinc from about 12% to about 30%; nickel from about to about 3%; phosphorus from about 0.03% to about 0.4% with the phosphorus being from about to about of the nickel by weight; and the balance substantially of copper.

2. An age-hardenabl copper-base alloy comprising: zinc about 20%; nickel about 1%; phosphorus about 0.2%; and the balance substantially of copper.

3. An age-hardenable copper-base alloy comprising: zinc about 12%; nickel about 1%; Phosphorus about 0.2%; and the balance substantially of copper. DONALD K. CRAMPTON.

HENRY L. BQRGHOFF;