Brazing fin stock for use in aluminum base alloy heat exchanger

Details Brazing fin stock for use in aluminum base alloy heat exchanger Brazing fin stock for use in aluminum base alloy heat exchanger

1980-07-28

1982-11-02

Lewis, Michael J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

75146, 148 115A, B32B 1501, B32B 1520

Patent

active

043573975

ABSTRACT:
A sacrificial brazing fin stock for use in an aluminum base alloy heat exchanger comprises an aluminum base alloy core having a grain size of 100 .mu.m or more and consisting essentially of 0.5 to 2 wt. % manganese plus iron, said manganese being more than iron, 0.1 to 0.7 wt. % zinc, 0.001 to less than 0.02 wt. % tin, and balance aluminum and a cladding consisting of one material selected from an Al-Si base alloy and an Al-Si-Mg base alloy.
The above fin stock protected a main tube of the heat exchanger from a pitting corrosion and led to a greatly expanded use of the aluminum base alloy heat exchanger.

REFERENCES:
patent: 2602413 (1952-07-01), Miller
patent: 3498849 (1970-03-01), Worthington et al.
patent: 4238233 (1980-12-01), Yamada et al.
Lyman, T., ed. Metals Handbook vol. 1, 8th Edition, Am. Soc. for Metals, Metals Park, Ohio, pp. 916-917 (1961).

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