Cu--Sn--Zn--Bi alloys
AssigneeIMI Yorkshire Fittings Limited
InventorWilliam Rushton
Life of this patent
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Abstract
An alloy for the manufacture of cast components, for example taps, water meters, pipe couplings and parts thereof, intended for use in potable water supply installations comprises 1.5 to 7 wt % bismuth, from 5 to 15 wt % zinc, from 1 to 12 wt % tin, the balance apart from any impurities and any minor amounts of elemental additives being copper.
Claims12
A substantially lead free alloy containing from 1.5 to 7 wt % bismuth, from 5 to 15 wt % zinc, from 1 to 12 wt % tin, the balance being essentially copper.
A component for use in a water supply installation comprising a substantially lead free alloy containing from 1.5 to 7 wt % bismuth, from 5 to 15 wt % zinc, from 1 to 12 wt % tin, the balance being essentially copper.
Dependencies are inferred from the claim text.