Obion, McClelland, Maier & Neustadt, L.L.P.
Aluminum alloy clad material
An aluminum alloy clad material includes: a sacrificial material on one surface of a core material; and an Al—Si—Mg—Bi-based brazing material disposed on other surface of the core material, contains, by mass %, Si: 6.0% to 14.0%, Mg: 0.05% to 1.5%, Bi: 0.05% to 0.25%, Sr: 0.0001% to 0.1%, and a balance consisting of Al and inevitable impurities, and satisfies a relationship of (Bi+Mg)×Sr≤0.1 by mass %, in which Mg—Bi-based compounds contained in the Al—Si—Mg—Bi-based brazing material with a diameter of 0.1 μm or more and less than 5.0 μm are more than 20 in number per 10,000-μm2 and the Mg—Bi-based compounds with a diameter of 5.0 μm or more are less than 2 in number, and the core material contains Mn: 0.9% to 1.7%, Si: 0.2% to 1.0%, Fe: 0.1% to 0.5%, Cu: 0.08% to 1.0%, and a balance consisting of Al and inevitable impurities.
Mitsubishi Aluminum Co., Ltd. DENSO CORPORATION
B Y C B B B
B23K Y10T C22C B32B B23K B23K
inventional additional inventional inventional inventional additional
Hayaki Yoshiki Naoki Shohei Masakazu Shogo Nobuhiro Hideyuki Michihide Taketoshi
Teramoto Mori Sugimoto Iwao Edo Yamada Honma Miyake Yoshino Toyama