Plastic Astm Standard Tensile Test Specimen Dimensions

D5947 test methods for physical dimensions of solid plastics specimens.

Plastic astm standard tensile test specimen dimensions.

Specimens for astm d638 are dumbbell shaped with either a 25 mm or 50 mm gauge length. D638 test method for tensile properties of plastics. D3039 d3039m test method for tensile properties of poly mer matrix composite materials d4000 classification system for specifying plastic materi als d4066 classification system for nylon injection and extru sion materials pa d5947 test methods for physical dimensions of solid plastics specimens. Intertek laboratories provide astm d 638 plastics tensile testing data generation services including tensile strength tensile modulus and elongation.

D6287 practice for cutting film and sheeting test. D618 practice for conditioning plastics for testing. D883 terminology relating to plastics. It is conducted on a universal testing machine also called a tensile testing machine at tensile rates ranging from 1 to 500 mm min until the specimen fails yields or breaks.

This test method uses standard dumbell or dogbone shaped specimens under 14mm of thickness. Plastics tensile testing for astm d638. Materials with a thickness greater than 14 mm 0 55 in shall be reduced by machining. An absolute accuracy of 10 μm for a 50 mm gauge length and relative accuracy within 0 5 are required by astm d638 for measuring the tensile modulus of elasticity.

A 50 mm gauge length is recommended. Astm d638 is performed by applying a tensile force to a sample specimen and measuring various properties of the specimen under stress. While it provides similar results to astm d638 iso 527 2 is not considered technically equivalent due to differences in specimen size and test requirements while some large multinational manufacturers test to both astm d638 and iso 527 2 most of our customers demonstrate a. Gauge length changes with astm e83 class b 2 accuracy.

However for testing specimens in the form of thin sheeting including film less than 1 0 mm 0 04 in in thickness astm standard d882 is the preferred test method. Properties that are directly measured via a tensile test are ultimate tensile strength breaking strength maximum elongation and reduction in area. Iso 527 2 is an international standard for determining the tensile properties of reinforced and non reinforced plastics. D4000 classification system for specifying plastic materials.

Though astm d638 measures many different tensile properties the following are the. Tensile testing also known as tension testing is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. From these measurements the following properties can also be determined.