Hardness and density of a rubber or polymeric material can influence the overall performance in and end use product. Measuring hardness levels can help predict the ability of the material to recover after being indented through force.

The test measures the depth of indentation of a ball into a sample. Hardness values are then calculated using tables derived from the empirical relationship between indentation depth and hardness.

Our rubber testing labs can offer a comprehensive range of hardness measurements, including:
  • Low, macro, high and micro machines
  • Shore A, Shore D and Shore M measurements
    • Durometers are mounted to a stand, yielding better reproducibility
  • Macro and micro-IRHD measurements

Common Standards

  • ISO 48— Rubber, vulcanized or thermoplastic -- Determination of hardness -- Part 2: Hardness between 10 IRHD and 100 IRHD
  • BS EN ISO 7619— Rubber, vulcanized or thermoplastic -- Determination of indentation hardness -- Part 1: Durometer method (Shore hardness)
  • ASTM D2240— Standard Test Method for Rubber Property—Durometer Hardness

About our Labs

Our on-site sample preparation facilities are equipped to handle thickness reduction of rubber by slitting/buffing, ensuring that we are able to test a wide variety of materials and product forms.
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