DuPont Mobility and Materials Vespel® SP-211 Polyimide, 15% Graphite, 10% Teflon® Filled, Direct formed

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DuPont Mobility and Materials Vespel® SP-211 Polyimide, 15% Graphite, 10% Teflon® Filled, Direct formed
Categories:	Polymer; Thermoplastic; Polyimide, Thermoplastic
Material Notes:	Has lowest coefficient of friction over wide range of operating conditions. Also, has lowest wear rate up to 300°F. Applications: For low friction and wear applications in moderate temperature and PV environments. Bearings (bushings, washers, etc.). 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	1.46 g/cc	1.46 g/cc	ASTM D792
Deformation	0.29 %	0.29 %	2000 psi; 122°F; ASTM D621

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	51.7 MPa	7500 psi	73°F; ASTM D1708
	24.1 MPa @Temperature 260 °C	3500 psi @Temperature 500 °F	ASTM D1708
Elongation at Break	5.5 %	5.5 %	73°F; ASTM D1708
	5.3 % @Temperature 260 °C	5.3 % @Temperature 500 °F	ASTM D1708
Flexural Strength	34.5 MPa	5000 psi	500°F; ASTM D790
	68.9 MPa	10000 psi	73°F; ASTM D790
Flexural Modulus	1.38 GPa	200 ksi	500°F; ASTM D790
	2.76 GPa	400 ksi	73°F; ASTM D790
Compressive Strength	14.5 MPa	2100 psi	@1% strain; 73°F; ASTM D695
	27.6 MPa	4000 psi	@0.1% Offset; 73°F; ASTM D695
	75.8 MPa	11000 psi	@10% strain; 73°F; ASTM D695
Compressive Modulus	1.38 GPa	200 ksi	73°F; ASTM D695
Coefficient of Friction, Dynamic	0.080	0.080	PV-100,000. Steady State; Unlubricated in air.
	0.12	0.12	PV-25,000. Steady State; Unlubricated in air.

Thermal Properties	Metric	English	Comments
CTE, linear	41.4 µm/m-°C @Temperature 22.8 - 300 °C	23.0 µin/in-°F @Temperature 73.0 - 572 °F	ASTM E-228
Thermal Conductivity	0.418 W/m-K	2.90 BTU-in/hr-ft²-°F	104°F

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PDU2007 / 32868

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