Due to the very large number of tests offered, descriptions of those most commonly requested have been gathered into the following groups:

ASTM D790 – Flexural Properties Testing of Unreinforced and Reinforced Plastics

To request a quotation for any test email – – for a PROMPT reply.

ASTM D790 is in Touchstone’s NADCAP and ISO 17025 scope.

ASTM D790 covers the determination of flexural properties of unreinforced and reinforced plastics, including high-modulus composites and electrical insulating materials in the form of rectangular bars molded directly or cut from sheets, plates, or molded shapes. These test methods are generally applicable to both rigid and semi-rigid materials. ASTM D790 utilizes a three-point loading system applied to a simply supported beam. Touchstone is also able to perform eh technically equivalent standard, ISO 178 – Determination of Flexural Properties of Plastics.

Flexural properties as determined by these test methods are especially useful for quality control and specification purposes.

Materials that do not fail by the maximum strain allowed under these test methods (3-point bend) may be more suited to a 4-point bend test, such as ASTM D6272.

Tests may be performed at elevated or cryogenic temperatures (-300 °F to 1000F)

Tests may be performed at elevated or cryogenic temperatures (-300 °F to 1000F)

Please email or call (304) 547-5800 for information regarding any ASTM D790 questions you may have. Touchstone Engineers are experienced in flexural testing of many materials and will be able to help if you are unsure whether the material should be tested using a three-point bend fixture (ASTM D790) or a four-point bend fixture (ASTM D6272).

Reference: ASTM D790 – Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

ISO 178: Plastics Determination of Flexural Properties