Testing Rubber Dumbbells to ISO 37 and ASTM D412

ISO 37 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties
ISO 37 specifies a method for the determination of the tensile stress-strain properties of vulcanized and thermoplastic rubbers.
This test standard is equivalent to BS ISO 37.
The properties which can be determined are tensile strength, elongation at break, stress at a given elongation, elongation at a given stress, stress at yield, and elongation at yield. The measurement of stress and strain at yield applies only to some thermoplastic rubbers and certain other compounds.
ASTM D412-16
Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers- Tension1
ASTM D412 is a test standard for testing the tensile stress-strain properties of thermoset rubbers and thermoplastic elastomers. The standard is divided into to test methods. Method A is used for evaluating the tension properties of dumbbell type samples and Method B covers procedures to evaluate the tension properties of flat ring type samples. Calculations derived from ASTM D412 include tensile stress, tensile stress at a given elongation, tensile strength, yield point and ultimate elongation.
Before commencing any testing to a standard it is important to use the latest version, these can be found directly with the appropriate standards body.
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