Aluminum alloy brazing sheet having high strength, high corrosion resistance, and high material elongation

An aluminum alloy brazing sheet having high strength, high corrosion resistance and high material elongation, the brazing sheet comprising:

• an aluminum alloy clad material comprising a core material, one surface of the core material being clad with a sacrificial material and an other surface of the core material being clad with an Al—Si-based or Al—Si—Zn-based brazing filler metal, wherein:
• the core material has a composition containing 1.3 to 2.0% Mn, 0.6 to 1.3% Si, 0.1 to 0.5% Fe and 0.7 to 1.3% Cu, by mass, with the balance comprising Al and unavoidable impurities;
• the sacrificial material has a composition containing more than 4.0% to 8.0% Zn, 0.7 to 2.0% Mn, 0.3 to 1.0% Si, 0.3 to 1.0% Fe and 0.05 to 0.3% Ti, by mass, with the balance comprising Al and unavoidable impurities;
• at least the core material has a lamellar crystal grain structure;
• an elongation of the material is at least 4%;
• and
• a tensile strength after brazing is at least 170 MPa.