Flexural testing of plastics and composites are commonly performed with TestResources three and four point bend fixtures installed in a universal test machine. Our flexural test equipment is modular and configured by our applications engineer to meet the needs of your plastic flexural bend test. Our product line includes a wide variety of equipment for plastic bend testing including test machines, test software, grips, test fixtures, extensometers, sample preparation aids, and environmental chambers. Call us to discuss your plastic flexural bend test application. Plastic bend tests are performed to determine the flexural properties of the plastic material in question. Often, flexural properties that have significance in design include flexural stress, flexural strength, flexural offset at yield, flexural stress at break, stress- strain relationships, flexural strain, tangent modulus of elasticity, secant modulus, and chord modulus. The most popular standard test methods for plastic flexural bend testing are ASTM D790 and ISO 178 for 3 point bend testing, and ASTM D6272 and ISO 180 for 4 point bend testing. These plastic bend tests use a specimen of specified size and apply a load at a constant speed until failure occurs. The test machine acquires data during the test of the stress and strain applied to the plastic specimen for analysis.
Applicable Testing Standards
- ISO 178 3 Point Bend of Plastics | Flexural Test Machines & Equipment
- ASTM D790 Testing for Flexural Properties of Plastics and Insulating Materials
- ASTM D5365 Ring-Bending Strain of Fiberglass Pipe
- ASTM D6272 Four Point Flexural Bend Test Machine for Plastics and Insulating Materials
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
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
Load ratings up to 500 kN (112,500 lbf)
Adjustable span with built-in ruler for accurate spacing
Available in 3-point and 4-point configurations
Load ratings of 2.5 kN and 10 kN (550 lbf and 2,250 lbf)
Span and roller dimensions made to order
Satisfies ASTM D790 and D7264
Loading nose is guided by linear bearing for high precision
Load ratings up to 250 kN (56,250 lbf)
Base lengths up to 1200 mm (48 in)
Various roller sizes available
Available in 3-point and 4-point configurations
Rated to 25 kN (5,625 lbf)
Available in 3-point and 4-point configurations
Load ratings up to 10 kN (2,250 lbf)
Interchangeable roller diameters from 1 mm to 12.7 mm (0.04 in to 0.5 in)
Easily adjustable span
Base lengths of 150 mm (6 in) and 300 mm (12 in)
Available from a 1 mm (0.04 in) measurement range to a 25 mm (1.0 in) measurement range
May be used in a wide variety of tests
Includes a magnetic and adjustable mounting base
Standard units meet Class B-1 of ASTM E83, Class 0,5 of ISO 9513
Standard temperature range of -155°C to 620°C (-247°F to 1150°F)
Accompanied by a broad set of accessories that are capable of withstanding the heat or cold
PID controlled internal temperature
Mounts directly to the test frame
Stamps test specimens from soft rubber, leather, or similar stock materials
Consistant samples for consistant results
Force outputs of 900 kgf or 3,000 kgf (1 ton or 3 ton)
No need to press by hand
Forms plastic test specimens from plastic particles
Variable temperature and pressure to form samples to different specifications
Capable of cooling the newly formed specimen at a user-specified time
Outputs 9,100 kgf (10 ton) of force
