Aluminum alloy for heat exchanger fins

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United States of America Patent

PATENT NO 11933553
APP PUB NO 20220221236A1
SERIAL NO

17656793

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An aluminum alloy fin stock material comprising about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg and 0.0-3.0% Zn, with remainder Al and impurities at ≤0.15 wt. %. The aluminum alloy fin stock material is produced in a form of a sheet by a process comprising the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of one or more of pre- and/or post-brazes strength, conductivity, sag resistance and corrosion potential. It is useful for fabrication of heat exchanger fins.

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Patent Owner(s)

Patent OwnerAddress
DENSO CORPORATION1-1 SHOWA-CHO KARIYA-CITY AICHI-PREF 448-8661

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ahmed, Hany Atlanta, US 13 60
Aluia, Derek Novi, US 1 0
Baciak,, III John Michael Royal Oak, US 2 1
Gatenby, Kevin Michael Johns Creek, US 16 72
Howells, Andrew D Kingston, CA 8 30
Kadali, Jyothi Atlanta, US 10 14

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