Plastic Tensile Testing

The figure below from quadrant engineering plastic products shows the test geometry.

Plastic tensile testing.

Elongation at yield the ratio between increased length and initial length at the yield point. The test is conducted at tensile rates ranging from 1 to 500 mm min until the specimen fails yields or breaks. Cut or injection mold your material into one of the five dumbbell shapes. Tensile strength the maximum amount of tensile stress that a material can withstand before failure through a.

Separate tensile test methods are commonly applied to polymer films astm d882 or iso 1184 and elastomers astm d412 or iso 37. Margaret johns sep 14 2017. The exact shape you use is. For this test plastic samples are either machined from stock shapes or injection molded.

How to perform a tensile test on plastics according to iso 527 2. Astm d638 tensile testing of plastics 1. Achieving reliable results in tensile testing of plastics automotive and medical applications increasingly call for tighter tolerances requiring suppliers to perform their own testing. Tensile testing is commonly used and represents an integral input to quality control.

Iso 527 2 is performed on a universal testing machine by applying a tensile force to a sample specimen and measuring various properties of the specimen material under stress. Tensile modulus how much a material can deform stretch in response to stress before it yields. Elongation at break the ratio between. How to perform an astm d638 plastic tensile strength test test procedure.