High strength aluminum alloy fin material and method of production of same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8226781
APP PUB NO 20110293468A1
SERIAL NO

13207950

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Abstract

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A heat exchanger use high strength aluminum alloy fin material having a high strength and excellent in thermal conductivity, elusion resistance, sag resistance, sacrificial anodization effect, and self corrosion resistance, characterized by containing Si: 0.8 to 1.4 wt %, Fe: 0.15 to 0.7 wt %, Mn: 1.5 to 3.0 wt %, and Zn: 0.5 to 2.5 wt %, limiting the Mg as an impurity to 0.05 wt % or less, and having a balance of ordinary impurities and Al in chemical composition, having a metal structure before brazing of a fibrous crystal grain structure, a tensile strength before brazing of not more than 240 MPa, a tensile strength after brazing of not less than 150 MPa, and a recrystallized grain size after brazing of 500 μm or more.

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Patent Owner(s)

  • NIPPON LIGHT METAL COMPANY, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagasawa, Masae Shizuoka, JP 5 26
Oki, Yoshito Shizuoka, JP 9 61
Sasaki, Tomohiro Shizuoka, JP 34 207
Suzuki, Hideki Shizuoka, JP 135 1197

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