DuPont Mobility and Materials Vespel® SMR-0454 Polyimide

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DuPont Mobility and Materials Vespel® SMR-0454 Polyimide
Categories:	Polymer; Thermoplastic; Polyimide, Thermoplastic
Material Notes:	High modulus, low elongation, high compressive strengths, low creep, and graphite-filled for low friction. The addition of carbon fibers gives extra benefits: a steel-like coefficient of thermal expansion and better thermal conductivity. Applications: Fiber-reinforced polyimide resins ideal for: bushings, washings, bumper pads. seal plates, pulleys Information provided by DuPont Information provided by DuPont. This product line has remained with DuPont after the DuPont-Dow merger.
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Physical Properties	Original Value	Comments

Specific Gravity	1.55 g/cc	ASTM D792
Water Absorption	0.25 %	24 hrs @ 73°F (23°C); ASTM D570
	0.97 %	24 hrs @ 212°F (100°C); ASTM D570

Mechanical Properties	Original Value	Comments
Hardness, Rockwell 15T	85	ASTM D2240
Tensile Strength, Ultimate	6700 psi	ASTM D638
Elongation at Break	0.35 %	ASTM D638
Tensile Modulus	1.90e+6 psi	ASTM D638
Flexural Strength	14000 psi	73°F; ASTM D790
Flexural Modulus	1200 ksi	73°F; ASTM D790
Compressive Strength	27000 psi	Parallel to the direction of molding pressure.; ASTM D695
Izod Impact, Notched	0.250 ft-lb/in	ASTM D256

Electrical Properties	Original Value	Comments
Electrical Resistivity	7.62 ohm-cm	ASTM C611

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	11.0 µin/in-°F @Temperature 23.0 - 300 °C	ASTM D696
Glass Transition Temp, Tg	335 °C

Descriptive Properties
Thermal Oxidation, % Weight Loss	15	After 400 hours at 610°F (321°C). 70 psia. (483 kPa). V/S.A.= 0.036 in.
	8	After 200 hours at 610°F (321°C). 70 psia. (483 kPa). V/S.A.= 0.036 in.
Thermal Oxidative Stability, %	5	100 hours; 70 psia (483 kPa) 610°F (321°C) circulating air; saturated condition; volume/surface area .026 in (.66 mm)

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PDU2016 / 32878

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