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US 2012/0237393 A1Published application
Low Lead Alloy
AssigneeSloan Valve Company
InventorsMichael Murray, Mahi Sahoo
Life of this patent
Estimating the term…
Abstract
A composition for a low lead ingot comprising primarily copper and including tin, zinc, sulfur, phosphorus, nickel. The composition may contain carbon. The low lead ingot, when solidified, includes sulfur or sulfur containing compounds such as sulfides distributed through the ingot. The presence and a substantially uniform distribution of these sulfur compounds imparts improved machinability and better mechanical properties.
Claims26
An alloy composition comprising:
- a copper content of about 82% to about 89%;
- a sulfur content of about 0.01% to about 0.65%;
- a tin content of about 2.0% to about 4.0%;
- a lead content of less than about 0.09%;
- a zinc content of about 5.0% to about 14.0%;
- a carbon content of about 0.1%;
- and
- a nickel content of about 0.5% to about 2.0%
5 more elements
An alloy composition comprising:
- a copper content of about 86% to about 89%;
- a sulfur content of about 0.01% to about 0.65%;
- a tin content of about 7.5% to about 8.5%;
- a lead content of less than 0.09%;
- a zinc content of 1.0% to about 5.0%;
- a carbon content of about 0.1%;
- and
- a nickel content of about 1.0%.
5 more elements
An alloy composition comprising:
- a copper content of about 58% to about 62%;
- a sulfur content of about 0.01% to about 0.65%;
- a tin content of about 1.5%;
- a lead content of less than 0.09%;
- a zinc content of 31.0% to about 41.0%;
- and
- a nickel content of about 1.5%.
4 more elements
An alloy composition comprising:
- a copper content of about 58% to about 62%;
- a sulfur content of about 0.01% to about 0.65%;
- a lead content of less than 0.09%;
- and
- a zinc content of 31.0% to about 41.0%.
2 more elements
Dependencies are inferred from the claim text.