Brazing filler metal
US7074350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Feb 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A brazing filler metal is composed of gold, silver, copper, and an additive element including at least one kind of element out of aluminum, bismuth, gallium, germanium, indium, antimony, silicon, tin, lead, tellurium, and thallium, as main constituents thereof, wherein a total composition ratio of the additive element is in a range of more than 1 wt. % to less than 36 wt. %, and a composition ratio of the gold is less than 80 wt. %, and a composition ratio of the silver is less than 42 wt. %, so that the brazing filler metal joins metals for use as members of which decorativeness in external appearance is required, such as stainless steel and so on, at a low temperature which does not cause the crystal structure thereof to be coarsened, while securing excellent corrosion resistance and sufficient joining strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.