Copper alloy tube for heat exchanger excellent in fracture strength
US9671182B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 20, 2008 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Sep 15, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C9/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a copper alloy tube for heat exchangers which is tolerable to a high operating pressure of new cooling media such as carbon dioxide and HFC-based fluorocarbons, and is excellent in fracture strength, even if the tube is thinned, and a copper alloy tube for a heat exchanger which has a composition having specified amounts of Sn and P, has an average crystal grain size of 30 μm or less and has a high strength of 250 MPa or more of a tensile strength in the longitudinal direction of the tube improves the fracture strength as a texture in which the orientation distribution density in the Goss orientation is 4% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.