Material object holds material property information for the structure.
<O T="Material">
.
.
.
</O>
Parent elements: Project
Child elements: Parameters
<O N="Structural Steel A36" T="Material">
<P N="E" V="200000" D="modulus of elasticity" />
<P N="G" V="83333" D="shear modulus" />
<P N="Fu" V="400" D="specified minimum tensile strength" />
<P N="Fy" V="248" D="specified minimum yield stress" />
</O>