The best replacement for yield strength is tensile strength.

The best alternatives to yield strength are rated as following:
★★★★★  tensile strength
★★★  ultimate strength
★★★  hardness
★★  yield stress
★  young's modulus
★  shear strength
★  compressive strength
★  ductility
★  fracture toughness
★  yield point
★  flexural strength
★  proportional limit
  toughness
  modulus of elasticity
  fatigue
  strain rate
  elastic limit
  proof stress
  tensile
  proof strength
  grain diameter

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Speaking about yield strength, one probably shouldn't forget about safety factor.

Other search terms related to yield strength and their ratings are:
★★★★★ safety factor
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yield strength
tensile strength
ultimate strength