Brazing filler metal

Details Brazing filler metal Brazing filler metal

2006-07-11

2006-07-11

Kopec, Mark (Department: 1751)

Compositions

Electrically conductive or emissive compositions

Free metal containing

C420S511000, C106S001230

Reexamination Certificate

active

07074350

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.

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Communication from European Patent Office dated Jun. 4, 2004 in Application No. EP 02 71 3175 enclosing partial European search report.

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