Copper base alloys
US3972712A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1975 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Feb 27, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C9/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Copper-base alloys are disclosed which are characterized by unusually low melting points combined with good tensile strength and ductility in the as-cast condition, excellent founding characteristics, high hardness and strength in the as-cast plus heat treated condition, ability to be used as brazing alloys, and excellent wrought characteristics. These alloys can possess an attractive pale gold or silvery appearance as cast in sand, permanent mold and investment mold, and comprise the following constituents in the ranges and ratios specified: Percent by Weight Manganese 12 to 36 Zinc 4 to 28 Beryllium 0.10 to 1.00 Copper 50.0 + (10 .times. Be content) to 58.0 + (14 .times. Be content). Up to 2% lead may be usefully incorporated in these alloys to improve machinability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.