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US 2010/0303667 A1Published application
Novel lead-free brass alloy
OwnerNorman M. Lazarusinventor
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Abstract
The invention relates to brass alloys that are substantially lead-free. In the alloys of the invention, lead is replaced with tellurium sulfur or blends of tellurium and sulfur resulting in alloys that exhibit excellent machinability and conductivity.
Claims15
A brass alloy comprising:
- Copper;
- Zinc;
- Sulfur;
- and
- Lead
- wherein lead comprises less than 0.25% of the alloy and the Sulfur comprises from about 0.025% to about 1% of the alloy, and
- wherein the alloy has a tensile strength of from about 240 MPa to about 530 MPa, and
- wherein the alloy is silicon free.
5 more elements
A brass alloy comprising:
- about 57% to about 98% copper;
- about 2% to about 43% zinc;
- and
- about 0.025% to about 1.0% sulfur
- wherein the alloy has a tensile strength of from about 240 MPa to about 530 MPa, and
- wherein the alloy is silicon free.
3 more elements
The alloy of claim 14 having a yield strength of from about 200 MPa to about 450 MPa.
A brass alloy comprising about 57% to about 98% copper;
- about 2% to about 43% zinc;
- and about 0.025% to about 1.0 of a blend of sulfur and tellurium;
- wherein the alloy has a tensile strength of from about 240 MPa to about 530 MPa, and
- wherein the alloy is silicon free.
1 more element
Dependencies are inferred from the claim text.