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US 2014/0212325 A1Published application
Lead free dezincification alloy and method of making same
AssigneeMueller Industries, Inc.
InventorBarry Munce
Life of this patent
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Abstract
A brass alloy containing trace amounts of iron, manganese and aluminum is disclosed. Phosphorous is added to a zinc, copper melt and combined with the iron, manganese and aluminum to form intermetallics. Additional phosphorous is added so the melt contains between about 0.08 to 0.15% phosphorous. The alloy has tin in the range of 0.15% to 0.35%.
Claims20
A brass alloy comprising:
- zinc;
- copper;
- tin;
- trace contaminants selected from the group consisting of iron, manganese, aluminum and combinations thereof;
- and
- phosphorous;
- wherein a first portion of the phosphorous combines with a portion of the trace contaminants to form intermetallic structures and wherein a second portion of the phosphorous reduces dezincification of the brass alloy.
4 more elements
A brass alloy comprising:
- a zinc and copper mixture;
- trace amounts of iron, manganese and aluminum in the zinc and copper mixture;
- a first amount of phosphorous in the zinc and copper mixture combined with a portion of the trace amounts of iron, manganese and aluminum, wherein the resulting combination has an intermetallic crystal structure;
- and
- a second amount of phosphorous between about 0.08 to about 0.15weight % phosphorous in the zinc and copper mixture configured to inhibit dezincification of the zinc and copper mixture.
2 more elements
A method for producing a brass alloy comprising:
- melting zinc and copper together to form a mixture, the mixture having trace elements selected from the group consisting of iron, manganese, aluminum and combinations thereof;
- and
- adding a first portion of phosphorous to the melt to form intermetallics with a portion of the trace elements and adding a second portion of phosphorous to the mixture to inhibit dezincification.
Dependencies are inferred from the claim text.