[JAH]

As far as I know...our team has used extrusion for at least the last 3 years with little or no problems. It does get scratched and chipped every so often with impact but it, as far as I know, it hasn't bent to a big degree unless really hit hard. We use extrusion for our frame every year not to mention other parts. Every so often, we'll just go around and hand tighten everything and it does just fine. I'd recommend it. It is really easy to work with as long as you have the other hardware (t-nuts, gussets, etc.)