On one edge strip of the heartwood and this heartwood of the aluminum alloy make

摘要

PROBLEM TO BE SOLVED: To provide a brazing sheet made of an aluminum alloy for a heat exchanger whose service life including fatigue in a plastic region is improved, and to provide an aluminum alloy tube for a heat exchanger composed using the same.;SOLUTION: The brazing sheet 1 made of an aluminum alloy for a heat exchanger is composed of: a core material 2 of an Al-Mn based alloy; a surface material 3 of an Al-Zn-Mg based alloy clad on one side face of the core material 2; and a brazing filler metal 4 of an Al-Zn based alloy, an Al-Zn-Mg based alloy, an Al-Si-Mn-Zn based alloy or an Al-Si-Mn-Mg-Zn based alloy clad on the other side face of the core material 2, wherein its X-ray diffraction intensity ratio satisfies I₂₀₀/(I₁₁₁+I₂₀₀+I₂₂₀+I₃₁₁)≥0.4.;COPYRIGHT: (C)2007,JPO&INPIT