DuPont Mobility and Materials Vespel® SP-1 Polyimide, Direct formed

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DuPont Mobility and Materials Vespel® SP-1 Polyimide, Direct formed
Categories:	Polymer; Thermoplastic; Polyimide, Thermoplastic; Thermoplastic Polyimide, Unfilled
Material Notes:	Provides maximum physical properties and best electrical and thermal insulation. Applications: Mechanical and electrical parts at elevated temperatures. Valve seats, seal, insulators. Direct-formed properties were measured perpendicular to the forming direction unless specified. Machined properties are non-directional 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	Metric	English	Comments

Specific Gravity	1.34 g/cc	1.34 g/cc	ASTM D792
Moisture Absorption at Equilibrium	1.0 - 1.3 %	1.0 - 1.3 %	50% RH
Deformation	0.20 %	0.20 %	2000 psi; 122°F; ASTM D621

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	72.4 MPa	10500 psi	73°F; ASTM D1708
	36.5 MPa @Temperature 260 °C	5300 psi @Temperature 500 °F	ASTM D1708
Elongation at Break	7.5 %	7.5 %	73°F; ASTM D1708
	7.0 % @Temperature 260 °C	7.0 % @Temperature 500 °F	ASTM D1708
Flexural Strength	44.8 MPa	6500 psi	500°F; ASTM D790
	82.7 MPa	12000 psi	73°F; ASTM D790
Flexural Modulus	1.45 GPa	210 ksi	500°F; ASTM D790
	2.48 GPa	360 ksi	73°F; ASTM D790
Compressive Strength	24.1 MPa	3500 psi	@1% strain; 73°F; ASTM D695
	33.1 MPa	4800 psi	@0.1% Offset; 73°F; ASTM D695
	112 MPa	16300 psi	@10% strain; 73°F; ASTM D695
Compressive Modulus	2.41 GPa	350 ksi	73°F; ASTM D695
Coefficient of Friction, Dynamic	0.29	0.29	PV-25,000. Steady State; Unlubricated in air.

Thermal Properties	Metric	English	Comments
CTE, linear	50.4 µm/m-°C @Temperature 22.8 - 300 °C	28.0 µin/in-°F @Temperature 73.0 - 572 °F	ASTM E-228
Thermal Conductivity	0.288 W/m-K	2.00 BTU-in/hr-ft²-°F	104°F

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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PDU2001 / 32862

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