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Cova Scientific By Cova Scientific • October 2, 2015

Comparing Shore A And Shore D Hardness Values

hardness testingA common way to evaluate a polymer material is to measure its hardness, or its ability to resist permanent indentation. Hardness can be measured in a number of ways, however, one of the most common methods is to use a Shore durometer. Throughout the site, and on many TDSs that we feature on the site, polymers are described with either a Shore A or a Shore D value. This post is dedicated to creating some context to these values.

Other polymer properties worth checking out:


Common Shore A And Shore D Hardness Examples

  • Rubber band: 25 Shore A
  • Tire thread: 70 Shore A
  • Hydraulic O-ring: 70-90 Shore A
  • Solid truck tires: 50 Shore D
  • Hard Hat: 75 Shore D

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