DuPont™ Vespel® Polyimide is an extremely high temperature, creep resistant plastic material that is often used in high heat environments where thermoplastic materials lose their mechanical properties and as a lightweight metal replacement. Vespel® has long term performance at cryogenic temperatures and up to 260°C (500°F) making it a popular choice for many aerospace and industrial applications. The Vespel® SP Family of products are highly durable polyimides used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired. Curbell Plastics is the only authorized distributor of Authentic DuPont™ Vespel® polyimide shapes (rod, plaque, ball, and bar) in the Western United States. Get a quote or shop for DuPont™ Vespel® Polyimide. For a glossary of terms, see our Plastic Properties Descriptions. TYPICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 * Flexural Modulus of Elasticity psi D790 450,000 Izod Impact (notched) ft-lbs/in of notch D256 0.8 Heat Deflection Temperature (66psi / 264psi) °F D648 - ~680 Water Absorption (Immersion 24 hours) % D570 0.24 PHYSICAL PROPERTIES UNITS ASTM TEST Specific Gravity - D792 1.43 Water Absorption (Immersion 24 hours) % D570 0.24 MECHANICAL PROPERTIES UNITS ASTM TEST Tensile Strength psi D638 * Tensile Modulus of Elasticity psi D638 - Tensile Elongation % D638 * Flexural Strength psi D790 16,000 Flexural Modulus of Elasticity psi D790 450,000 Compressive Strength psi D695 19,300 Hardness scale as noted D785, D2240 - Izod Impact ft-lbs/in D256 0.8 THERMAL PROPERTIES UNITS ASTM TEST Coefficient of Linear Thermal Expansion in/in/°F x 10-5 D696 3.0 Heat Deflection Temperature (66psi / 264psi) °F D648 - ~680 Max Continuous Service Temperature In Air °F - 500 ELECTRICAL PROPERTIES UNITS ASTM TEST Dielectric Strength V/mil D149 560 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 DuPont™ Vespel® Polyimide? Research DuPont™ Vespel® Polyimide or Ask a Plastics Expert.