Alloy suited for use in water service and having improved machin

Details Alloy suited for use in water service and having improved machin Alloy suited for use in water service and having improved machin

1991-09-03

1993-11-16

Dean, R.

Alloys or metallic compositions

Copper base

Zinc containing

420491, 148413, 148434, C22C 904

Patent

active

052621243

ABSTRACT:
An alloy suited for use in water service, having less tendency for lead to dissolve in water, free cutting property and freedom from gravity segregation in casting and cracks caused by forming is provided. The alloy according to the invention comprises about 60 weight % of copper, 0.5 to 3.5 weight % of lead, at least one rare earth metal in an amount of 1/17 to 1/5 relative to lead in weight and zinc for the rest. The lead content is preferably at most 3.0% for less dissolution of lead into water, while less than 3.0% of lead is preferred for hot forged alloys.

REFERENCES:
Woldman's Engineering Alloys, 6th Edition, Robert C. Gibbons, editor; American Society for Metals, 1979, p. 1776.

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