On 10 Jan 2006 11:55:37 -0800, wrote:

The 124 KSI strap will have less elongation than the 80 KSI
strap and will therefore take more of the applied load, with the
combination failing much closer to the 124 KSI figure than the
collective 204 KSI limit. When the 124 strap fails, the 80 strap will
stretch and fail almost instantly.
That's how I'd see it, anyway.

Dan

Youngs modulus is virtually independent of alloy and heat treat
condition. The load vs elongation will be "the same" if they are the
same size. ASSUMING the straps are of the same size, if the load
remains below the yield of the weaker member, you doubled your load
capacity based on that one. The higher one does virtually no good.