6061 T6 vs 6063 Aluminum Alloys
6061 T6 vs 6063 Aluminum Alloys Comparison When it comes to structural aluminum profiles for building construction, curtain wall systems, or even modular framing, choosing the right alloy is crucial. Two of the most widely used aluminum alloys in structural applications are 6061 T6 and 6063—but they’re far from interchangeable.