The slope of the curve defined by flexural load versus resultant strain. A high flexural modulus indicates a stiffer material.

A measure of the flexural properties of a material, with the data derived from plotting a "load curve" by applying a given weight-load to the test sample at a specified rate of speed. The results are given in psi units, that is, pounds per square inch. In general, more flexible materials will have a lower flexural modulus, and stiffer materials a higher one.

This is a number associated with the stiffness of materials. It is used to calculate how far a bar will bend when a bending load is applied to it. Units are normally millions of pounds per square inch. (10 psi) - Giga Pascals (gPa). Higher numbers for materials mean that they are more resistant to deflection when equal thickness are being compared.

ASTM D-790. An engineering measurement which determines how much a sample will bend when a given load is applied.

Ratio of maximum fiber stress to maximum strain, within elastic limit of the stress-strain diagram obtained in the flexure test. The flexural modulus is a measure of elasticity, or the ability for the material to be deformed and return to its original shape. An alternate term is the Flexural Modulus of Elasticity. The flexural modulus of Dyplast's ISO-C1 line of polyiso products is generally higher than competing polyisos, and increases as density increases.

The ratio, within the elastic limit, of the applied stress on a test sample in flexure to the corresponding strain in the outermost fibers of the sample.

Ratio of applied stress to strain in outer fibers of plastic specimen during flexure.

A measure of the strain imposed in the outermost fibers of a bent specimen.

The ratio, within the elastic limit, of flexural stress to the corresponding strain. It is expressed in pounds per square inch. ASTM D790-63.