CLAD SHEET ALLOYS FOR BRAZING APPLICATIONS

摘要

This application discloses a multilayer aluminum material having an aluminum alloy core and an aluminum alloy cladding, wherein the aluminum alloy cladding contains ≦1.0 wt % Cu, ≦0.5 wt % Fe, ≦1.0 wt % Mn, ≦15 wt % Si, ≦0.15 wt % Ti, ≦7 wt % Zn and at least one of Sr or Na, remainder Al. The aluminum alloy cladding can also contain one or more of ≦0.2 wt % Mg or ≦0.05 wt % Ni. A process for producing the material is also disclosed. The material can be produced in sheet form and is suitable for brazing application. The metal forms fabricated from the multilayer aluminum material by a process comprising brazing steps are also disclosed.

主权项

1. An aluminum material comprising an aluminum alloy core and an aluminum alloy cladding, wherein the aluminum alloy cladding comprises ≦1.0 wt % Cu, ≦0.5 wt % Fe, ≦1.0 wt % Mn, ≦15 wt % Si, ≦0.15 wt % Ti, ≦7 wt % Zn and at least one of Sr or Na, remainder Al.