Aluminum alloy clad sheet having excellent high-temperature sagging resistance and thermal conductivity
US4511632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12764
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A clad sheet comprising an aluminum alloy sheet having excellent high-temperature sagging resistance and thermal conductivity comprising an aluminum alloy sheet clad on at least one surface with a brazing metal, said aluminum alloy sheet consists essentially of: PA1 manganese: from 0.1 to 0.5 wt. %, PA1 silicon: from 0.1 to 0.8 wt. %, PA1 zirconium: from 0.02 to 0.2 wt. %, and, the balance being aluminum and incidental impurities. The clad sheet is particularly adapted to be used as a fin material for tubes of a heat exchanger, said aluminum alloy sheet may also contain chromium within the range of from 0.05 to 0.4 wt. % and/or at least one element selected from the group consisting of: PA1 magnesium: from 0.1 to 0.7 wt. %, and, PA1 copper: from 0.1 to 0.7 wt. %, total amount of said magnesium and said copper being up to 1.0 wt. %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.