Originally Posted by
axelriet
I don't know if 6082-T6 would be enough. 7075-T6 is much harder and about twice as strong. It's definitely suitable but this does not mean other alloys are not. For this part you need excellent strength (and hard anodizing) because it has a thread, and you don't need to weld it so 7075-T6 is probably the better choice.
I was looking at the properties and def agree that 7075 would be best tho the local metal stockest doesnt keep it and only sells in 4m lenghts so could be very expensive.
Other option as its just for a road car would be to make it out of steel and black oxide finish it possibly.
It would work out alot cheaper and would need to be hard anodized after machining etc.
What you think?