GPO-3 is a glass reinforced thermoset polyester sheet material. It is strong, stiff, dimensionally stable, and impact resistant. This material has excellent electrical properties including flame, arc, and track resistance. GPO-3 is widely used for electrical insulating applications, and for mechanical applications where strength, stiffness, dimensional stability, and relatively low cost are required. Get a quote or shop GPO-3 Thermoset. For a glossary of terms, see our Plastic Properties Descriptions. TYPICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 8,000 - 11,000 Flexural Modulus of Elasticity psi D790 1,500,000 Izod Impact (notched) ft-lbs/in of notch D256 8.0 - 9.5 Heat Deflection Temperature (66psi / 264psi) °F D648 - Water Absorption (Immersion 24 hours) % D570 - PHYSICAL PROPERTIES UNITS ASTM TEST Specific Gravity - D792 1.80 Water Absorption (Immersion 24 hours) % D570 - MECHANICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 8,000 - 11,000 Tensile Modulus of Elasticity psi D638 - Tensile Elongation % D638 - Flexural Strength psi D790 18,000 - 25,000 Flexural Modulus of Elasticity psi D790 1,500,000 Compressive Strength psi D695 30,000 - 35,000 Hardness scale as noted D785, D2240 - Izod Impact ft-lbs/in D256 8.0 - 9.5 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 GPO-3 Thermoset? Research GPO-3 Thermoset or Ask a Plastics Expert.