Hardness properties 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.
Hardness testing measures the depth of indentation of a ball into a sample. Hardness property values are then calculated using tables derived from the empirical relationship between indentation depth and hardness levels.
Our rubber and plastic 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
- Rockwell hardness (R&M scales only)
Common Standards for Hardness Properties Testing
- ISO 48— Rubber, vulcanized or thermoplastic -- Determination of hardness -- Part 2: Hardness between 10 IRHD and 100 IRHD
- BS ISO 48-4 Rubber, vulcanized or thermoplastic. Determination of hardness. Indentation hardness by durometer method (Shore hardness)
- BS EN ISO 868 Plastics and ebonite. Determination of indentation hardness by means of a durometer (Shore hardness) Type A or Type D
- BS EN ISO 2039-2 Determination of Rockwell hardness. Rockwell hardness - Rockwell hardness
- ASTM D785 Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials
- ASTM D1415 Standard Test Method for Rubber Property—International 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, as well as supporting other polymeric and plastic materials meaning we are able to test a wide variety of products and material applications.