DuPont Mobility and Materials Vespel® SP-2515 Direct Formed (DF) Polyimide Parts

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DuPont Mobility and Materials Vespel® SP-2515 Direct Formed (DF) Polyimide Parts
Categories:	Polymer; Thermoplastic; Polyimide, Thermoplastic
Material Notes:	Parts made from DuPont™ Vespel® SP-2515 offer a low coefficient of thermal expansion (CTE), excellent wear against both aluminum and steel alloys, and a low coefficient of friction in both dry and lubricated conditions. These properties make Vespel® SP-2515 parts ideal for applications such as seal rings, thrust washers, and bushings where high energy efficiency and dimensional stability, over a broad range of temperatures, are a requirement. 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	1.73 g/cc	ASTM D792
Water Absorption	0.30 % @Time 86400 sec	ASTM D570
Deformation	0.090 % @Time Error in fixSigDigits: @digits must be between 1 a sec, Pressure 14.0 MPa	ASTM D621
	0.11 % @Pressure 14.0 MPa, Time 86400 sec	ASTM D621

Mechanical Properties	Original Value	Comments
Tensile Strength	25.0 MPa @Temperature 260 °C	E-8 Specimen
	39.0 MPa @Temperature 22.8 °C	ASTM D638
Elongation at Break	1.9 % @Temperature 22.8 °C	ASTM D638
	2.1 % @Temperature 260 °C	E-8 Specimen
Modulus of Elasticity	2.26 GPa @Temperature 260 °C	E-8 Specimen
	6.34 GPa @Temperature 22.8 °C	ASTM D638
Flexural Strength	38.0 MPa @Temperature 260 °C	ASTM D790
	61.0 MPa @Temperature 22.8 °C	ASTM D790
Flexural Modulus	3820 MPa @Temperature 260 °C	ASTM D790
	5560 MPa @Temperature 22.8 °C	ASTM D790
Compressive Strength	71.0 MPa @Temperature 260 °C	ASTM D695
	105 MPa @Temperature 22.8 °C	ASTM D695
Compressive Modulus	1840 MPa @Temperature 260 °C	ASTM D695
	2080 MPa @Temperature 22.8 °C	ASTM D695
Coefficient of Friction, Dynamic	0.21 @Pressure 1.30 MPa	0.88 PV, 0.7 m/s; Falex
	0.33 @Pressure 1.70 MPa	3.5 PV, 2 m/s; Falex
K (wear) Factor	74.0 x 10^-10 in³-min/ft-lb-hr @Pressure 1.29 MPa	25,000 psi-fpm PV; 0.7 m/s (134 fpm); Falex, Unlubicated
	282 x 10^-10 in³-min/ft-lb-hr @Pressure 1.72 MPa	100,000 psi-fpm PV; 2.0 m/s (400 fpm); Falex, Unlubicated

Thermal Properties	Original Value	Comments
CTE, linear	23.0 µm/m-°C @Temperature 50.0 - 150 °C	Perpendicular; ASTM E831
	54.0 µm/m-°C @Temperature 50.0 - 150 °C	Parallel; ASTM E831
Specific Heat Capacity	0.214 BTU/lb-°F @Temperature 60.0 °C	ASTM E1269
Thermal Conductivity	2.04 W/m-K @Temperature 100 °C	ASTM F433
	2.05 W/m-K @Temperature 50.0 °C	ASTM F433

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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PDTA7759m / 183713

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