Aluminum brazing sheet
AssigneeKobe Steel, Ltd.
InventorsSusumu Saisho, Toshiki Ueda, Fumihiro Sato
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Abstract
An aluminum brazing sheet has a core material made of an aluminum alloy and a cladding material cladded on at least one side of the core material and made of an aluminum alloy having a potential lower than that of the core material. The cladding material is made of an aluminum alloy consisting essentially of 0.4 to 0.7 mass % of Mg, 0.5 to 1.5 mass % of Si, and 0.4 to 1.2 mass % of Mn, the remainder being Al and unavoidable impurities. Zn in the amount of 6 mass % or less is added in accordance with need. An aluminum brazing sheet having not only high strength but also less pressure adhesion failure and excellent productivity can be obtained.
Claims5
An aluminum brazing sheet consisting of:
- a core material made of an aluminum alloy;
- a cladding material cladded on one side of the core material;
- and
- a brazing material laminated on the side of the core material opposite to the cladding material;
- wherein
- a potential of the cladding is lower than a potential of the core and a sacrificial anode effect is obtained,
- the cladding material is an aluminum alloy consisting of
- from 0.52 to 0.7 mass % of Mg,
- 0.5 to 1.5 mass % of Si,
- 0.4 to 1.2 mass % of Mn,
- 0.3 to 6 mass % of Zn,
- Al, and
- the core material consists of:
- 0.3 to 0.7 mass % of Si,
- 0.6 to 1.2 mass % of Mn,
- 0.5 to 1.0 mass % of Cu,
- a maximum of 0.3 mass % Mg,
- from 0.15 to 0.2 mass % Ti,
- from 0.1 to 0.15 mass % Cr, and
- Al.
Dependencies are inferred from the claim text.