High conductivity aluminum fin alloy
US6592688B2 · kind B2 · utility
3Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F21/084
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved aluminum alloy fin stock is described having both a high strength and a high thermal conductivity. The fin stock contains 1.2-1.8% Fe, 0.7-0.95% Si, 0.3-0.5% Mn, 0.3-1.2% Zn and the balance Al, and is produced by continuously strip casting the alloy at a cooling rate greater than 10° C./sec. but less than 200° C./sec., hot rolling the strip to a re-roll sheet without homogenization, cold rolling the re-roll sheet to an intermediate gauge, annealing the sheet and cold rolling the sheet to final gauge. This fin stock has a conductivity after brazing of greater than 49.8% IACS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.