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LM6 Aluminum S-N Curve / Goodman Diagram

LM6 Aluminum S-N Curve / Goodman Diagram

LM6 Aluminum S-N Curve / Goodman Diagram

(OP)
Hi,
I am finding it very difficult to get hold of this information.  Does anyone know where I could obtain an "endurance curve" for pressure die cast Aluminum LM6.  Not a limit, but the curve plotted from empirical data from a R.R.Moore test.  I already know it is 70 - 100MPa at 5x10^8 cycles.  But I need the curve, so I can predict the stress level at much lower cycles.
Alternatively, I have been able to plot such a curve before for steel, from formulae in "Machine Component Design" by Juvinall:
Sn = S'n * Cl * Cg * Cs * Ct * Cr
Sn = Endurance Limit
S'n = 0.5 * Ultimate tensile strength (for steel)
Cl = Load factor
Cg = Gradient Factor
Cs = Surface Factor
Ct = Temperature Factor
Cr = Reliability factor

If anyone has any of these factors, that would also be greatly appreciated.

Thanks!

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