Materials with a thickness greater than 14 mm 0 55 in shall be reduced by machining.
Plastic astm standard tensile test specimen dimensions.
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.
D5947 test methods for physical dimensions of solid plastics specimens.
Iso 527 2 is an international standard for determining the tensile properties of reinforced and non reinforced plastics.
A 50 mm gauge length is recommended.
A universal testing machine tensile testing machine is needed to perform this test.
From these measurements the following properties can also be determined.
Though astm d638 measures many different tensile properties the following are the.
Gauge length changes with astm e83 class b 2 accuracy.
Properties that are directly measured via a tensile test are ultimate tensile strength breaking strength maximum elongation and reduction in area.
Plastics tensile testing for astm d638.
D4000 classification system for specifying plastic materials.
D883 terminology relating to plastics.
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.
Tensile tests measure the force required to break a plastic sample specimen and the extent to which the specimen stretches or elongates to that breaking point.
Astm d638 is one of the most common plastic strength specifications and covers the tensile properties of unreinforced and reinforced plastics.
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.
This test method uses standard dumbell or dogbone shaped specimens under 14mm of thickness.
D6287 practice for cutting film and sheeting test.
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.
D638 test method for tensile properties of plastics.
D618 practice for conditioning plastics for testing.
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.
Specimens for astm d638 are dumbbell shaped with either a 25 mm or 50 mm gauge length.
