Corrosion Resistance. Wrought aluminum
alloys can be classified as either non-heat treatable
alloys or heat treatable alloys (Table 1).
The corrosion resistance of the non-heat treatable
alloys is not altered significantly by the heat of welding. The Al-Mg-Si heat treatable
alloys, such as 6061 and 6063, also have high
corrosion resistance in the welded condition