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

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DuPont Mobility and Materials Vespel® SP-211 Polyimide, 15% Graphite, 10% Teflon® Filled, Machined
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	Original Value	Comments

Specific Gravity	1.55 g/cc	ASTM D792
Water Absorption	0.21 %	24 hrs @ 73°F.; ASTM D570
	0.49 %	48 hrs @ 122°F; ASTM D570
Deformation	0.13 %	2000 psi; 122°F; ASTM D621

Mechanical Properties	Original Value	Comments
Hardness, Rockwell E	<= 20	ASTM D785
Tensile Strength, Ultimate	6500 psi	73°F; ASTM D1708
	3500 psi @Temperature 260 °C	ASTM D1708
Elongation at Break	3.5 %	73°F; ASTM D1708
	3.0 % @Temperature 260 °C	ASTM D1708
Flexural Strength	5000 psi	500°F; ASTM D790
	10000 psi	73°F; ASTM D790
Flexural Modulus	200 ksi	500°F; ASTM D790
	450 ksi	73°F; ASTM D790
Compressive Strength	3000 psi	@1% strain; 73°F; ASTM D695
	5400 psi	@0.1% Offset; 73°F; ASTM D695
	14800 psi	@10% strain; 73°F; ASTM D695
Compressive Modulus	300000 psi	73°F; ASTM D695
Coefficient of Friction, Dynamic	0.080	PV-100,000. Steady State; Unlubricated in air.
	0.12	PV-25,000. Steady State; Unlubricated in air.
Coefficient of Friction, Static	0.20	In air.

Thermal Properties	Original Value	Comments
CTE, linear	30.0 µin/in-°F @Temperature 22.8 - 300 °C	ASTM E-228
Thermal Conductivity	5.30 BTU-in/hr-ft²-°F	104°F

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PDU2006 / 32867

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