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Title:
ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGERS HAVING EXCELLENT STRENGTH, CONDUCTIVITY, CORROSION RESISTANCE AND BRAZABILITY, AND HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2019/150822
Kind Code:
A1
Abstract:
Provided are: an aluminum alloy fin material for heat exchangers, which is free from brazing failure associated with fin deformation during brazing, and which has excellent strength, conductivity, corrosion resistance and brazability; and a heat exchanger. This aluminum alloy fin material for heat exchangers is formed from an aluminum alloy that has a composition which contains, in mass%, from 1.2% to 2.0% of Mn, from 0.5% to 1.3% of Si, 0.001% or more but less than 0.05% of Cu, from 0.1% to 0.5% of Fe and from 0.5% to 2.5% of Zn, with the balance made up of Al and unavoidable impurities; and this aluminum alloy fin material for heat exchangers has, at room temperature after heating for brazing, a tensile strength of 140 MPa or more, a 0.2 proof stress of 50 MPa or more, a conductivity of 42% IACS or more, a potential of from -800mV to -710 mV (inclusive), and a corrosion mass loss of 120 mg/dm2 or less after 16 weeks in a neutral salt spray test.

Inventors:
NAKANISHI SHIGEKI (JP)
IMAI YUSUKE (JP)
IWAO SHOHEI (JP)
SAJI ATSUSHI (JP)
SHINODA TAKAHIRO (JP)
IIO MASANOBU (JP)
Application Number:
PCT/JP2018/046965
Publication Date:
August 08, 2019
Filing Date:
December 20, 2018
Export Citation:
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Assignee:
MITSUBISHI ALUMINIUM (JP)
DENSO CORP (JP)
International Classes:
C22C21/00; F28D1/053; F28F1/30; F28F21/08; C22F1/00; C22F1/04; C22F1/053
Domestic Patent References:
WO2015141698A12015-09-24
Foreign References:
JP2016121393A2016-07-07
JP2016121373A2016-07-07
JP2014047384A2014-03-17
JP2005002383A2005-01-06
JP2007031778A2007-02-08
Attorney, Agent or Firm:
YOKOI Koki (JP)
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