Aluminum alloy clad material for heat exchangers exhibiting high strength and excellent corrosion resistance
US6261706A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Oct 6, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12764
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An aluminum alloy clad material for heat exchangers exhibiting superior strength after brazing and excellent corrosion resistance is provided. The aluminum alloy clad material comprises a sacrificial anode material which is clad on one side of a core material, wherein the core material comprises an aluminum alloy comprising 0.3-2.0% of Mn, 0.25-1.0% of Cu, 0.3-1.1% of Si, and 0.05-0.35% of Ti with the remaining portion consisting of aluminum and impurities, the sacrificial anode material comprises an aluminum alloy comprising 1.5-8% of Zn, 0.01-0.8% of Si, and 0.01-0.3% of Fe with the remaining portion consisting of aluminum and impurities, and the total number of particles of Si compounds and Fe compounds with a particle diameter (circle equivalent diameter) of 1 .mu.m or more present in the sacrificial anode material matrix is 2.times.10.sup.4 or less per 1 mm.sup.2. The clad material is suitably used as a tube material or header plate material for automotive heat exchangers such as a radiator or heater core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.