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Aluminum Alloy selection for machined Spring. ADVISE

Aluminum Alloy selection for machined Spring. ADVISE

Aluminum Alloy selection for machined Spring. ADVISE

(OP)
I am working on a Large Diameter (11 inch X .5 wide and the machined legs to be .100 thk) machined spring. I have done some FEA (Cosmos works) with my Solidworks models. With the alloy 3003-T6 I have found that the radius on the legs need to be larger. Max G loads to be 30 but continuous load to be 3-5 g. Could some one Please advise me on material and condition selection?

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