Jetmugg:I originally talked to SteveM. some time ago. We did make up Cupro Nickle Impellers for Test. All three ripped out at the vains-(Blown Gas 1500 H/P Our Mag.Bronze has lasted 3 to 4 years at these stress levels. Stainless has been about the same. Put new S/Steel 17-4 H/T "WOW It has held up so far-(3rd year)but cost to produce is way high.
I cannot find cupro nickle in yeilds, elongations Quoted: Don't have Steves # and I think what these are being stated from are utilized on subs and formulation is not available-Would try again-
P.S. We will be trying a new spin cast in the near future on both Mag.Alum./Tenzaloy & Mag bronze.
As to why we don't call our "A" cut a "AA" cut, The Dia. is 9.00 on 28 degrees - much like the berkeley "A" cut - This would also cause questions as to why we call it a "AA" then.
RPMs Drop on Like cut Impellers(Aggressor vs Any)Just a Fact-Flow Load is Higher & Leans on the torque side more "don't know any other way to rate"
Thanks for the discussion its what makes jets work. p.s phone is toll free 888-246-5075 if you know how to reach Steve=Dave Aggressor
Originally posted by Jetmugg:
SteveM. - Still suggests cupro-nickel (70/30) as a good alternative to bridge the gap between Aluminum and Stainless Steel. Approximate Tensile strength - 80 Ksi
Approximate Yield Strength - 40 Ksi
Approximate % Elongation - 30%
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