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Meldin Supplier

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.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.55 g/cc1.55 g/ccASTM D792
Water Absorption 0.21 %0.21 %24 hrs @ 73°F.; ASTM D570
 0.49 %0.49 %48 hrs @ 122°F; ASTM D570
Deformation 0.13 %0.13 %2000 psi; 122°F; ASTM D621
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell E <= 20<= 20ASTM D785
Tensile Strength, Ultimate 44.8 MPa6500 psi73°F; ASTM D1708
 24.1 MPa
@Temperature 260 °C
3500 psi
@Temperature 500 °F
ASTM D1708
Elongation at Break 3.5 %3.5 %73°F; ASTM D1708
 3.0 %
@Temperature 260 °C
3.0 %
@Temperature 500 °F
ASTM D1708
Flexural Strength 34.5 MPa5000 psi500°F; ASTM D790
 68.9 MPa10000 psi73°F; ASTM D790
Flexural Modulus 1.38 GPa200 ksi500°F; ASTM D790
 3.10 GPa450 ksi73°F; ASTM D790
Compressive Strength 20.7 MPa3000 psi@1% strain; 73°F; ASTM D695
 37.2 MPa5400 psi@0.1% Offset; 73°F; ASTM D695
 102 MPa14800 psi@10% strain; 73°F; ASTM D695
Compressive Modulus 2.07 GPa300 ksi73°F; ASTM D695
Coefficient of Friction, Dynamic 0.0800.080PV-100,000. Steady State; Unlubricated in air.
 0.120.12PV-25,000. Steady State; Unlubricated in air.
Coefficient of Friction, Static 0.200.20In air.
 
Thermal PropertiesMetricEnglishComments
CTE, linear 54.0 µm/m-°C
@Temperature 22.8 - 300 °C
30.0 µin/in-°F
@Temperature 73.0 - 572 °F
ASTM E-228
Thermal Conductivity 0.764 W/m-K5.30 BTU-in/hr-ft²-°F104°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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