On Tue, 03 Aug 2010 14:17:49 -0500, Terry
wrote:

On 03 Aug 2010 11:08:42 GMT, John Doe wrote:

I see the description on McMaster-Carr. Is there any difference
for bending? It will be used for ordinary purposes, nothing
precise. Is there any difference between 6061 and 6063 that
matters to a layperson?

Thanks.
If memory serves, 6063 has about half the tensile strength of 6061.

Closer to 80% in the T6 condition. I researched this pretty thoroughly
for a customer a few years ago. They received a large shipment of
custom extrusions that were supposed to be 6061, but there was a mixup
and the mill ran 6063 instead.

--
Ned Simmons