Hi,

I'm trying to run a fatigue study using alloy 356 T6 as a material.

I've had no luck tracking down an SN curve but Solidworks allows deriving the SN curve automatically based on ASME SN curves and the moduli of elasticity based on ASME Carbon Steel curves or Austentic Steel curves.

So my question is: will the curve derived be of any use as it is based on steel and my material is aluminium?

Thanks in advance

Hi Alan,

According to SW Help:

The SN curve is derived by dividing each stress value of the reference SN curve by the modulus of elasticity of the reference ASME material and multiplying it by the modulus of elasticity of the current material. The associated numbers of cycles remain unchanged.

I would try to compare it to a Aluminum material that you know a SN curve and E-mod off. It will answer your question.

Janko Stellaard

Cadmes BV

The Netherlands