Plastic Tensile Strength Test

How to perform a tensile test on plastics according to iso 527 2.

Plastic tensile strength test.

This includes astm d638 technically equivalent to iso 527 1 is a testing standard which ascertains the tensile properties of a plastic material. The most common way to measure the yield strength of plastics is with a tensile test. The tensile testing machine pulls the sample from both ends and measures the force required to pull the specimen apart and how much the sample stretches before breaking. Tensile testing is a destructive test process that provides information about the tensile strength yield strength and ductility of the metallic material.

A wide variety of grips are available for tensile testing of plastics. The test method can be used for testing materials up to 14mm 0 55 in and the material should be in the shape of a dumbbell or dog bone. Separate tensile test methods are commonly applied to polymer films astm d882 or iso 1184 and elastomers astm d412 or iso 37. The test measures the force as a function of the strain being applied to the plastic sample.

These include several types of self tightening manual hydraulic and pneumatic versions that are necessary for positive gripping. This test method uses standard dumbell or dogbone shaped specimens under 14mm of thickness. 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. Astm d638 is the most common testing standard for determining the tensile properties of reinforced and non reinforced plastics.

A universal testing machine tensile testing machine is needed to perform this test. The test is conducted at tensile rates ranging from 1 to 500 mm min until the specimen fails yields or breaks. A tensile test is typically governed via standards and the two most common in the plastics industry are astm d638 and iso 527. With the use of plastics being at an all time high it is critical that manufacturers be able to properly gauge the mechanical strength of their materials.

For this test plastic samples are either machined from stock shapes or injection molded. In addition the wintest software includes all applicable calculations like yield stress strain e modulus uts etc.