Stiffness, Strength, Fatigue, & Impact Performance

Structural performance of die castings depend on four mechanical properties:

  • Modulus of Elasticity: The modulus of elasticity is not affected by casting parameters.
  • Tensile Strength: Ultimate tensile strength and yield strengths may be affected by casting parameters; some alloys more than others.
  • Fatigue Strength: Die casting alloys do not reach a distinct endurance limit as do steel alloys.
  • Impact Strength: Impact failures are very difficult to predict by analytical methods.

Creep and dent resistance are also relevant to die castings.