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  1. 007hammer

    17-4 elongation, what do I need for 45000 rpm?

    Can't give much more info, matl ~3"od,1 3/4"L ultimate should be 150ksi, is 186; yield should be 135ksi, is 181; ra should be 45%, is 59; elongation should be 12% is 10. Operational life ~~45min. Can not redo to correct properties, use or loose it.
  2. 007hammer

    17-4 elongation, what do I need for 45000 rpm?

    elongation should have been 12% came out 10%

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