Aluminum alloy composite material for brazing

An aluminum alloy composite material for brazing comprising:

• a core member made of an aluminum alloy consisting essentially of 0.3 to 1.3 wt. % of Si, 0.3 to 1.5 wt. % of Mn, 0.02 to 0.3 wt. % of Ti and 0.02 to 0.3 wt. % of Cr, the content of Mg being restricted to 0.2 wt. % or less and the content of Cu being restricted to 0.2 wt. % or less as an impurity;
• an Al--Si filler member clad on one surface of said core member;
• and
• a cladding member of an aluminum alloy clad on the opposite side of said core member, consisting essentially of 0.3 to 3 wt. % of Mg, 5 wt. % or less of Zn and 0.1 to wt. % of Si.

An aluminum alloy composite material for brazing comprising:

• a core member made of an aluminum alloy, consisting essentially of 0.3 to 1.3 wt. % of Si, 0.3 to 1.5 wt. % of Mn, 0.02 to 0.3 wt. % of Ti, 0.02 to 0.3 wt. % of Cr and 0.2 wt. % or less of Zr, the content of Mg being restricted to 0.2 wt. % or less and the content of Cu being restricted to 0.2 wt. % or less as an impurity;
• an Al--Si filler member clad on one surface of said core member;
• and
• a cladding member of an aluminum alloy clad on the opposite side of said core member, consisting essentially of 0.3 to 3 wt. % of Mg, 5 wt. % or less of Zn and 0.1 to 1.0 wt. % of Si.

An aluminum alloy composite material for brazing comprising:

• a core member made of an aluminum alloy, consisting essentially of 0.3 to 1.3 wt. % of Si, 0.3 to 1.5 wt. % of Mn, 0.02 to 0.3 wt. % of Ti, the content of Mg being restricted to 0.2 wt. % or less and the content of Cu being restricted to 0.2 wt. % or less as an impurity;
• an Al--Si filler member clad on one surface of said core member;
• and
• a cladding member of an aluminum alloy clad on the opposite side of said core member, consisting essentially of 0.3 to 3 wt. % of Mg, 2.1 to 5 wt. % of Zn and 0.1 to 1.0 wt. % of Si.

An aluminum alloy composite material for brazing comprising:

• a core member made of an aluminum alloy consisting essentially of 0.3 to 1.3 wt. % of Si, 0.3 to 1.5 wt. % of Mn, 0.02 to 0.3 wt. % of Ti, 0.3 wt. % or less of Cr and 0.2 wt. % or less of Zr, the content of the Mg being restricted to 0.2 wt. % or less and the content of Cu being restricted to 0.2 wt. % or less as an impurity;
• an Al--Si filler member clad on one surface of said core member;
• and
• a cladding member of an aluminum alloy clad on the opposite side of said core member, consisting essentially of 0.3 to 3 wt. % Of Mg, 2.1 to 5 Wt. % of Zn and 0.1 to 1.0 wt. % of Si.