ASTM D3574 Test E and ISO 1798 measure the tensile strength and deformation properties of flexible cellular polymeric materials at a constant test speed, or rate of extension (CRE) through failure. Note that the two standards are similar but not the same. The test specimen is supported between two grips and fitted with an extensometer. The specimen is pulled until it fractures. Load and strain is recorded and used for determine tensile strength and elongation at break. Pneumatic grips offer better repeatability because the clamp pressure remains constant from test to test.
Applicable Testing Standards
- ISO 1798 Tensile Test of Flexible Cellular Polymers
- ASTM D3574 Testing Equipment for Flexible Cellular Urethane Foams
Recommended Test Machine
Forces up to 10 kN (2,250 lbf)
Low force tabletop systems
Modular series of five frame options with adjustable test space
Affordable testing option for tension, compression, bend, peel and much more
Forces up to 5 kN (1,125 lbf)
Low force tabletop systems
Tests at speeds up to 2,500 mm/min (100 in/min)
Best for high travel or high elongation test requirements
Force range of 5 kN to 600 kN (1,125 lbf to 135,000 lbf)
Adjustable test space
The most popular choice for static tension and compression tests
These dual column testers are available in both tabletop and floor standing models
Recommended Testing Accessories
Rated to 0.6 kN (135 lbf)
Maximum specimen thicknesses from 8 mm to 50 mm (0.3 in. to 2.0 in.)
Clamp force up to 1.2 kN (270 lbf)
Quick and simple specimen setup for a wide variety of applications
Designed for applications that deal with very elastic material, such as rubber
No inherent gage length, allowing it to be used for almost any sized specimen
Maximum travel ratings up to 1,100 mm (43 in)
Adjustable clips allow for gripping onto various specimen thicknesses and materials