Tear Strength - ASTM D624
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The force required to tear a specified test specimen divided by the specimen thickness.
This test provides a measure of resistance to tearing. Tear strength may also be used to illustrate the anisotropy of a material.
Testing is performed by pulling specimens apart using a tensile test machine. The maximum force required to tear a test specimen is used to calculate the tear strength of the Die A, B, and C specimens while the mean force is used for the T and CP specimens.
| Specimen |
Name |
Diagram |
Grip Separation |
Test |
| Die A |
Nicked Crescent |
 |
500 mm/min (20 in/min) |
 |
| Die B |
Nicked Tab End |
 |
500 mm/min (20 in/min) |
| Die C |
Right Angle |
 |
500 mm/min (20 in/min) |
| T |
Trouser |
 |
50 mm/min (2 in/min) |
 |
| CP |
Constrained Path |
 |
50 mm/min (2 in/min) |
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