Brazing sheet
US5863669A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1995 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Dec 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12764
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Brazing sheet having a core sheet made of an aluminum alloy core material and on at least one side thereof a brazing layer of an aluminum alloy containing silicon as main alloying element, wherein the aluminum alloy of the core sheet has the composition (in weight %) PA1 Mn 0.7-1.5 PA1 Cu 0.2-2.0 PA1 Mg 0.1-0.6 PA1 Si >0.15 PA1 Fe up to 0.8 PA1 Ti optional, up to 0.15 PA1 Cr optional, up to 0.35 PA1 Zr and/or V optional, up to 0.25 in total PA1 balance Al and unavoidable impurities, PA1 with the proviso that (Cu+Mg)>0.7. This brazing sheet achieves improved post-brazed strength properties by ageing, e.g. 0.2% yield strength of at least 70 MPa, and has at the same time a good post-brazed corrosion resistance as determined in a SWAAT (ASTM G85) corrosion test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.