Brazing sheets, articles formed from brazing sheets, and methods of forming articles

Abstract

Brazing sheets, articles formed from or including all or a portion of a brazing sheet, and methods of forming articles of manufacture are provided. The brazing sheet comprises a brazing layer and a core layer. The brazing layer comprises a 4XXX series aluminum alloy. The core layer comprises a first aluminum alloy comprising, in weight percentages based on total weight of the first aluminum alloy: 0.2 to 0.6 silicon; 1.5 to 2 manganese; 0.01 to 0.2 titanium; 0.5 to 2.5 copper; 0 to 0.5 iron; 0 to 0.5 magnesium; 0 to 0.5 zinc; 0 to 0.3 chromium; 0 to 0.25 zirconium; optionally incidental elements; impurities; and aluminum. The first aluminum alloy satisfies the equation Formula (I) and [Mg], [Fe], [Cr], and [Si] are, respectively, weight percentage concentrations of manganese, iron, chromium, and silicon in the first aluminum alloy.

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