Title:
ALUMINUM ALLOY EXCELLENT IN CORROSION RESISTANCE AND UNDERCOAT COATING TREATABILITY AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3201033
Kind Code:
B2
Abstract:
PURPOSE: To obtain an aluminum alloy sheet excellent in chemical conversion treating property, corrosion resistance, adhesion of coated film, etc.
CONSTITUTION: This alloy sheet is an aluminum alloy sheet which contains, by weight, 2.5-5.5% Mg, 0.05-0.4% Cu, 0.005-0.2% Mn, 0.005-0.1% Cr, 0.01-0.05% Ti, ≤0.08% Si, ≤0.1% Fe, and 0.0001-0.01% Be and further contains, if necessary, one or ≥2 kinds among 0.001-0.1% Zr, 0.001-0.1% V, and 0.0001-0.01% B and in which A=Mg-10×Cu-1000Be[wt.%] is regulated to ≤4 and B=Mg/(Al+O) [atomic%] is ≤0.3 in the position, where Mg concentration reaches a peak with respect to a depth direction in the material surface after solution heat treatment, and also Mg concentration in the surface layer part is regulated to ≤20%.
Inventors:
Takayuki Tsuchida
Kaoru Shimada
Takeshi Moriyama
Toshiaki Suzuki
Kaoru Shimada
Takeshi Moriyama
Toshiaki Suzuki
Application Number:
JP36135992A
Publication Date:
August 20, 2001
Filing Date:
December 28, 1992
Export Citation:
Assignee:
NIPPON LIGHT METAL COMPANY,LTD.
International Classes:
C22C21/06; C22F1/00; C22F1/047; (IPC1-7): C22C21/06; C22F1/047
Domestic Patent References:
| JP4214835A | ||||
| JP4154934A | ||||
| JP257656A | ||||
| JP6254855B2 |
Attorney, Agent or Firm:
Wataru Ogura
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