Hi,

Can anyone tell me what alloy is used for the manufacture of aluminium nose
bowls on aircraft such as the Luscombe or C-140 or J-3 Cub ?

Also how are they made (hand beaten, drop hammer etc ??)

I assume they are formed in the 'O' condition ? If so are the heat treated
subsequent to forming or is the strain hardening as a result of the forming
process enough to harden and strengthen the metal ?

Thanks,

Steve