Quote:
Originally Posted by coyote
Although the modulus of elasticity is "similar", different alloys and different tempers can have quite different material properties.
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Ultimate strength, yield strength, elongation properties, yes, they can be *very* different. But MODULUS (i.e., stiffness) is going to be in the 10-10.5 Msi range for *any* aluminum alloy, regardless of temper. If anything, 6061 actually has the slightly lower modulus, ~10.0 average tensile/compressive, whereas cast 356 is at 10.5 for tensile (average would be slightly higher).