Engineering Fundamentals Refresh: Strength vs Stiffness vs Hardness

Our latest Hardware Guide post explains the common pitfalls in identifying between mechanical strength vs. stiffness vs hardness, the technical differences between the three, and their relevance in the selection of engineering materials for product development.

A Stress-strain curve showing the relationship between stiffness and yield strength (Yield Point)

In this article we cover:

  • Important definitions to keep in mind for strength, stiffness, and hardness.
  • The concepts of stress and strain
  • How to retrieve mechanical property data
  • 3 practical examples of strength vs. stiffness: beam deflection, axial loading on a straight member, and thermal stress.
  • 4 best prototyping practices when designing for these mechanical properties

Read the full Hardware Guide post here!

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