Copper-zinc alloy

Details Copper-zinc alloy Copper-zinc alloy

1995-12-29

1997-08-19

Sheehan, John

Metal treatment

Stock

Copper base

148413, 148419, 148435, 148436, 148441, 148442, 420477, 420478, 420480, 420481, 420485, 420486, 420515, 420521, 420587, C22C 904

Patent

active

056584016

ABSTRACT:
A copper-zinc alloy for semi-finished products and articles which are highly loaded and subjected to extreme wear especially synchronizing rings. The alloy possesses a composition of 40 to 65% Cu, 8 to 25% Ni, 2.5 to 5% Si, 0 to 3% Al, 0 to 3% Fe, 0 to 2% Mn and 0 to 2% Pb, with the balance being zinc and unavoidable impurities. The Ni:Si ratio is about 3 to 5:1, and the structure consists of at least 75% .beta.-phase, with the balance .alpha.-phase, in the absence of a .gamma.-phase. Nickel silicides occur predominantly as a round intermetallic phase. The alloy provides quite substantially higher levels of resistance to wear.

REFERENCES:
patent: 1762871 (1930-06-01), Lytle
patent: 4362579 (1982-12-01), Tsuji
patent: 4954187 (1990-09-01), Gaag et al.
patent: 5004581 (1991-04-01), Takagi et al.

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