12L14 fatigue properties 1

[peyto]

Hi all,
Can anyone direct me to a source with a S-N curve for 12L14. I understand the additions of lead and sulfur to increase machineability tend to reduce fatigue properties. I can't seem to find any data that shows this.
Thanks in advance!

 

[EdStainless]

I found none. Indicating that there are no reliable fatigue properties for this grade. The closest that I can come is fatigue curves for steels with inclusions showing about a 40% drop in properties, even though the tensile, yield, and elongation are the same.

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Plymouth Tube

 

[deadrange]

12L14 is going to have a very different fatigue life profile based on the chemistry. Plus this grade isn't exactly designed for its fatigue life.

 

[deadrange]

Sorry, I forgot to add. I have looked for an S-N curve for that grade in the past without much success.

 

[Flesh]

There is fatige S-N curves available from LaSalle's LA-LED grade. This material is for all practical purposes the same as 12L14 - i.e. low carbon, cold drawn, and full of inclusions. I will post summary via upload.

 

[Flesh]

LA-LED chemistry:
C 0.09%C max, 0.85-1.15%Mn, 0.04-0.09%P, 0.26-0.35%S, 0.15-0.35%Pb.

 

[peyto]

Thanks for the help, all.