Tensile Properties of Plastics

ASTM D638, ISO 527-1, ISO 527-2, JIS K7113

ASTM D638, ISO 527-1, ISO 527-2, JIS K7113

ASTM D638 method is used to determine tensile properties of plastics

The most significant properties are: tensile strength, strain at rupture and yield modulus, for quality control and mechanical specifications. Generally, samples are: rigid, semi-rigid, and non-rigid plastics in the form of dumbbell, rod, or tubular specimen types.

Testing goals to this Standard are:

  • repeatable strain measurement, where an extensometer is required by Standard to accurately measure strain (measure modulus, strain to failure) and the operator is assisted in working
  • safe gripping of different specimens, mechanical wedge grips or pneumatic side-acting grips with serrated faces are suitable for most rigid and semi-rigid plastics
  • reporting calculations according to ASTM Standard. Graphwork software has pre-built methods available with pre-configured plastic specific calculations helping to ensure compliance

For labs with a high volume testing, we offer both robotic, 6-axis or 3-axis automated testing solutions.

It is important to revise ASTM D638 in order to fully understand the test setup, procedure, and results requirements


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