ASTM D412 Elastomer Tensile Strength Testing

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ASTM D412 | Plastics and Elastomers | Tension Testing

ASTM D412 covers the testing of tensile properties of thermoset rubbers and thermoplastic elastomers. The specification describes two test methods: A and B. Method A is common and can be performed on a universal testing machine (tensile testing machine). If you are going to perform this test, you should read the entire specification from ASTM. This is a quick summary to decide if ASTM D412 is right for you and to point out what equipment you need to perform the test.

Prior to conducting ASTM D412, it is important to read the entire specification in the relevant ASTM publication.

ASTM D412 | Plastics and Elastomers | Tension Testing

  1. Cut your material into a “dogbone” shaped sample.
  2. Load the sample into a pair of tensile grips suitable for elastomers and attach your  extensometer (if you have one).
  3. Begin the test by separating the tensile grips at a rate specified in the standard and run until sample break (rupture).
Calculations:
  • Stress at User-Specified Extension or Elongation
  • Tensile Yield Stress
  • Tensile Yield Strain
  • Tensile Strength at Rupture
  • Elongation at Rupture

ASTM D412 | Plastics and Elastomers | Tension Testing

ASTM D412 | Plastics and Elastomers | Tension Testing

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