Tear Strength - ASTM D624 Plastic Test Standard

Tear Strength - ASTM D624

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)

Similar Standards

• ISO 34-1

Property information for specific grades of resin are available in the Prospector Plastics Database.