Lead-free copper alloy
AssigneeG & W Electric Company
InventorGeary Robert Smith
Life of this patent
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Abstract
An improved white manganese bronze alloy containing, in weight percent, about 1.0-3.0 wt % aluminum, about 2.0-4.0 wt % bismuth, about 53-59 wt % copper, about 0.8-2.0 wt % iron, about 11-15 wt % manganese, about 5.0-7.0 wt % nickel, about 1.3-2.5 wt % tin, and about 18-24 wt % zinc, as well as incidental amounts of antimony, lead, phosphorus, silicon and sulfur, which is able to withstand vigorous cleaning and disinfection, and is not subject to galling.
Claims5
An improved white manganese bronze alloy consisting essentially of, in weight percent, about 1.0-3.0 wt % aluminum, about 2.0-4.0 wt % bismuth, about 53-59 wt % copper, about 0.8-2.0 wt % iron, about 11-15 wt % manganese, about 5.0-7.0 wt % nickel, about 1.3-2.5 wt % tin, and about 18-24 wt % zinc, as well as incidental amounts of impurities, which is able to withstand vigorous cleaning and disinfection, and is not subject to galling.
In a machine containing at least two opposed metal members in contact with one another and arranged for movement in relation to each other, at least one of said members fabricated of a white manganese bronze alloy consisting essentially of about 1.0-3.0 wt % aluminum, about 2.0-4.0 wt % bismuth, about 53-39 wt % copper, about 0.8-2.0 wt % iron, about 11-15 wt % manganese, about 5.0-7.0 wt % nickel, about 1.3-2.5 wt % tin, and about 18-24 wt % zinc, which is able to withstand vigorous cleaning and disinfection, and is not subject to galling.
An improved white manganese bronze alloy comprising in weight percent, about 1.0-3.0 wt % aluminum, about 2.0-4.0 wt % bismuth, about 53-59 wt % copper, about 0.8-2.0 wt % iron, about 11-15 wt % manganese, about 5.0-7.0 wt % nickel, about 1.3-2.5 wt % tin, and about 18-24 wt % zinc, which is able to withstand vigorous cleaning and disinfection, and is not subject to galling.
Dependencies are inferred from the claim text.