Stress-strain curve for Grey Cast Iron

Good morning,

I am interesting about construction of curve stress-strain for cast iron. From my knowledge cast iron have only ultimate strength and after that appear fracture. Beside of this, have different ultimate strength in tension comparison with compression. My scope is to establish this curve from the analytical point of view, like curve stress strain for steel.

Im using ANSYS software to made FEM study.

Best regards.

I am not an expert on cast iron. Perhaps someone else can comment.

-Jorgen