Highly resistant copper tube against ant nest corrosion
US10302376B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 8, 2018 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F2255/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a corrosion resistant copper tube which can exhibit a further improved resistance to ant nest corrosion, and which is suitably usable as a heat transfer tube and refrigerant tube in air-conditioning equipment and refrigerating equipment. The copper tube is formed of a copper material comprising a copper alloy consisting of 0.15-0.50% by weight of phosphorus and the balance being copper and impurities, wherein the copper material includes phosphorus oxide particles, such that a number density of particles having a circle equivalent diameter of not less than 0.1 μm among the phosphorus oxide particles is not more than 50000/mm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.