ASTM D638 Test Lab
Designed to determine the tensile strength of both reinforced and non-reinforced plastics, ASTM D638 is a common but crucial industrial testing standard for evaluating a material's mechanical strength. As plastic is lightweight and resilient, manufacturers use this material to make a wide variety of products with varying requirements and specifications.
Our Plastic Tensile Testing Process
The ASTM D638 test method is relatively simple. To assess plastic tensile strength, you first cut or mold the sample into one of five designated shapes, which you choose based on its thickness and rigidity. These shapes are all variants on a dumbbell design, with large ends that will be held by the machine while it stretches the piece.
With the sample held vertically by the machine and the meter in place to collect data, the tensile grips begin expanding in opposite directions. The test continues until the piece ruptures, at which point the machine reports its tensile strength, tensile modulus and elongation. A comprehensive ASTM D638 test method with a transverse extensometer will also report Poisson's ratio for the piece, or the relationship between how far the material stretches and how thin it becomes.
Common Reasons for ASTM D638 Testing
Knowing a plastic's tensile strength is crucial when considering it for use in high-stress applications. The ASTM D638 test method provides valuable information on how plastics will perform in typical conditions, as well as while under strain, informing manufacturers how well a given material will serve in a planned project.
Many customers contract VTEC's ASTM D638 testing lab to establish quality standards, inform product direction or deliver proof of concept.
Other Tests Commonly Performed
ASTM D638 is commonly applied to plastics of the same composition at different phases of their lifespan. Once data is obtained for a freshly manufactured piece, a sample of the same material will be aged, weathered or exposed to environmental factors such as heat. These pieces are then tested to demonstrate the material's projected performance in its intended application. For consistency, all samples intended for ASTM D638 testing must first be tested for and comply with ASTM D5947, a standard for physical dimensions.
VTEC Laboratories offers a state-of-the-art ASTM D638 testing lab, as well as the capacity to perform aging and weathering tests for a comprehensive picture of a material's present and future capabilities. We can also perform similar plastic tensile strength tests, such as ISO 16012 and ISO 527-1, or fully customized tests suited to unique applications and requirements.
To request a quote or learn more about our ASTM D638 test methods, call 718-542-8248 or contact us online today.
Choose VTEC Laboratories for Your ASTM D638 Testing Needs
VTEC Laboratories has been providing comprehensive testing services for a wide range of materials since 1982, and we offer the best turnaround time in the industry. Our facilities support the rapid testing, listing, labeling and inspection of samples, allowing us to perform thorough analyses and deliver full reports in an average of only two weeks. Rush service is also available.
When you contract VTEC for your materials testing, your report will include your analysis as well as recommendations and potential solutions to any issues noted by our scientists. The expansive facility and diverse equipment at VTEC Laboratories enable us to comply with the testing standards of over 20 different agencies, including ASTM and ISO, and our services are trusted by the U.S. military as well as many international customers.
Along with ASTM D638, Customers Also Requested:
- ASTM D258 - Testing Spun and Filament Yarns
- ASTM D790 - Flexure Testing of Plastics
- ASTM D695 - Compressive Properties of Rigid Plastics
- ASTM D696 - Thermal Expansion of Plastics Test
- ASTM D831 - Gas Content of Cable and Capacitor Oils
Learn More Plastic Tensile Strength Tests
At VTEC Laboratories, our role as a multi-functional company stems from our more than three decades of experience. Due to our extensive expertise in multiple industries, we provide comprehensive services that meet each field’s unique standards, needs and objectives.
Learn more about our services by contacting us online or calling us at (718) 542-8248.