These test methods are used to determine the flexural properties of unreinforced and reinforced plastics, including high-modulus composites and electrical insulating materials utilizing a three-point loading system to apply a load to a simply supported beam (specimen). The method is generally applicable to both rigid and semi-rigid materials, but flexural strength cannot be determined for those materials that do not break or yield in the outer surface of the test specimen within the 5.0% strain limit.
KeywordsASTM D790 - Electrical Insulation - Flexural Modulus - Flexural Strength - Flexural Test - Flexural/Bend Strength - Plastics Products - Reinforced Plastics
ICS CODE29.035.20 (Plastic and rubber insulating materials)
UNSPSC CODE13100000 (Rubber and elastomers); 39121721 (Electrical insulators)
ASTM D790-17, Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials, ASTM International, West Conshohocken, PA, 2017, www.astm.org