Aluminum alloy brazing sheet

摘要

An aluminum alloy brazing sheet which has a clad of a sacrificial anode material/a core alloy/an intermediate material/a filler alloy, wherein number density ratios N 1 /N 2 and N 1 /N 3 each are 1.5 or more, in which a number density ((the number of grains)/µm 3 ) of an intermetallic compound having a sphere-equivalent grain diameter of 0.1 µm or less present in the core alloy, the intermediate material, and the sacrificial anode material, is represented by N 1 , N 2 , and N 3 , respectively.