TYPICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 - Flexural Modulus of Elasticity psi D790 - Izod impact (notched) ft-lbs/in of notch D256 - Heat Deflection Temperature (66psi / 264psi) °F D648 - Water Absorption (Immersion 24 hours) % D570 - PHYSICAL PROPERTIES UNITS ASTM TEST Specific Gravity - D792 - Water Absorption (Immersion 24 hours) % D570 - MECHANICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 - Tensile Modulus of Elasticity psi D638 - Tensile Elongation % D638 - Flexural Strength psi D790 - Flexural Modulus of Elasticity psi D790 - Compressive Strength psi D695 - Hardness scale as noted D785, D2240 R75 Izod Impact ft-lbs/in D256 - THERMAL PROPERTIES UNITS ASTM TEST Coefficient of Linear Thermal Expansion in/in/°F x 10-5 D696 - Heat Deflection Temperature (66psi / 264psi) °F D648 - Max Continuous Service Temperature In Air °F - - ELECTRICAL PROPERTIES UNITS ASTM TEST Dielectric Strength V/mil D149 - OPTICAL PROPERTIES UNITS ASTM TEST Light Transmittance % D1003 - Haze % D1003 - OTHER UNITS ASTM TEST Coefficient of Friction - Dynamic - Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand. Still Not Sure if You Need Fluted Polypropylene Boards? Research Fluted Polypropylene Boards or Ask a Plastics Expert.