Quote:
Originally Posted by t walgamuth
If you take your fourth sentence and change the word steel to aluminum the sentence is still true.
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Uhh, no. Aluminum behaves differently than steel under cycled loading. Aluminum will eventually fail, even at very low stresses. The lower the stress, the more cycles it can handle, though
The stress limit at which steel will last an infinite number of cycles is called the "endurance limit." Aluminum does not have endurance limits... because it will always eventually fail under cycled loading.