Density. 74.9-81.2 lb/ft3. 1.20-1.30 g/cm3. Tensile strength, yield. 3.6-6.1 lb/in2 x 103. enclosures for swimming pools and buildings, paneling, break resistant security glazing, tinted ... Due to phenolics' thermoset structure, and high crosslink density, they have outstanding rigidity, dimensional stability, chemical resistance, and ...