Contents Chapter 4: Ring-Gear Forging Simulation with Rezoning | Print page 4.5. Material PropertiesThe Billet material properties are listed in the table below. AISI8620 alloy Material Properties Modulus of Elasticity = 200e3 MPa Poisson’s Ratio = 0.3 Nonlinear Isotropic Hardening Power Law Initial Yield Stress = 385.4 MPa Exponent = 0.134 « 4.4. Modeling and Meshing 4.6. Boundary Conditions and Loading »