Modulus of rubber

Elastomer Research Testing BV is an independent and ISO 17025 accredited research and test laboratory which offers a wide range of methods to determine rubber properties, such as the modulus of rubber.

What is the modulus of rubber?

The moduli of rubber samples are typically expressed as the stress needed to strain a rubber sample for 25%, 50%, 100%, 200% and 300%. This is reported as Modulus 25%, Modulus 50% etc. The higher these percentages are, the stiffer the material is.


What is measured while determining the modulus of rubber (ISO 37)?

When we determine the tensile properties, we get more results than only the modulus of rubber:


How do we test the stress-strain properties of rubber?

The stress-strain properties can both be tested at standard laboratory temperature (SLT, 23±2°C) and at application-specific elevated temperatures up to 275°C.


We usually test rubber based on ASTM, DIN, EN, or ISO standards, but we can always test rubber according to another certification standard. Please let us know how for which certification you need testing, so we can tell you whether we can be of service in your specific matter.


More information about the modulus of rubber

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