ISO 178 Test Standard Explained

Share This Page • Free Access to 80,000 Datasheets

Flexural Properties - ISO 178

Purchase and download the official ISO 178 test standard today!

A test specimen is held as a simply supported beam and is subjected to three-point bending. Maximum stress and strain occurs at the underside of the test specimen. The preferred test specimen is 80 mm long, 10 mm wide, and 4 mm thick. Other specimens may be used if the length to thickness ratio is equal to 20.

Flexural Test Configuration

Location of Maximum Fiber Stress/Strain

Term	Definition
Flexural Modulus	The ratio of outer fiber stress to outer fiber strain.
Flexural Strength	The maximum outer fiber stress sustained by a specimen during testing.

Similar Test Standards

ASTM D790

Property information for specific grades of resin are available in the Prospector.
If you already have an account, you can login here or you can register for free, instant access:

Join the IDES Network: Email Alerts • Blog • Twitter • LinkedIn