Sold/Expired Aluminum links

[Hardline4]

Isn't square only stronger on the corners? If Im understanding your facts right then you just seconded what I've been saying in 7075 will return to shape better than 6061.

 

[Welderd]

first question - no, it's stronger in bending because it has a larger moment of inertia. There's more material further from the centroid than with round (the corners). the more area further from the center the better - ideally we should be using I or T beams but those are hard to tap and not so pretty but they would be lighter and stronger. Also you don't really need the center of the bars - it does hardly anything but AL tube is $$$

quick guess 1.75 square is similar to 2.25" round

Second question - yup just backing it up with facts

 

[Hardline4]

psh who needs facts

 

[muchado]

you can smell an engineer a mile away laughing1