ASTM D4476 is a test method used to determine the flexural properties of fiber-reinforced pultruded plastic rods. The specimen used is a rod with a semi-circular cross section, moulded or cut from lengths of pultruded rods. ASTM D4476 is designed for rods with a diameter of 0.5 in. or greater.
Before conducting ASTM D4476, it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.