Fracture strain for steel in Abaqus

Hello Everyone,



I am modeling a machining simulation in abaqus. there I have to used JC material model and Ductile damage. I am taking mateial properties for Steel specifically AISI 4140. So in ductile damage option, i need to put fracture strain value. for time being i am putting 1.5. I will be very thankful if anyone tell me the actual value of fracture strain for steel or more specifically for AISI 4140.

Thanks in advance.

regards 

Borad