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DuPont Mobility and Materials Vespel® SP-22 ISO Polyimide
Categories: Polymer; Thermoplastic; Polyimide, Thermoplastic; Thermoplastic Polyimide, Graphite Filled

Material Notes: Parts and stock shapes from nominal 40% (wt) graphite filled PI (polyimide) for low coefficient of thermal expansion and high creep resistantance.

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 PropertiesOriginal ValueComments
Density 1.65 g/ccASTM D 792
Water Absorption 0.14 %Immersion 24h; ASTM D 570
 0.42 %Immersion 48h,50°C (122°F); ASTM D 570
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell E <= 25ASTM D 785
Tensile Strength, Ultimate 52.0 MPaASTM D 638
 23.0 MPa
@Temperature 260 °C
ASTM D 638
Elongation at Break 3.0 %ASTM D 638
 2.0 %
@Temperature 260 °C
ASTM D 638
Flexural Strength 90.0 MPaASTM D 790
 45.0 MPa
@Temperature 260 °C
ASTM D 790
Flexural Modulus 4823 MPaASTM D 790
 2756 MPa
@Temperature 260 °C
ASTM D 790
Izod Impact, Notched 0.277 J/cmASTM D 256
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 4.00e+19 ohm-cmASTM D 257
Surface Resistance 7.00e+11 ohmASTM D 257
Dielectric Constant 18.51
@Frequency 1e+6 Hz
ASTM D 150
 24.03
@Frequency 10000 Hz
ASTM D 150
 35.02
@Frequency 100 Hz
ASTM D 150
Dielectric Strength 3.00 kV/mm2.0mm (0.08in) sample; short time; ASTM D 149
Dissipation Factor 0.0597
@Frequency 1e+6 Hz
ASTM D 150
Comparative Tracking Index 250 - 399 VIEC 60112
 250 - 399 V3.0mm; UL 746A
 
Thermal PropertiesOriginal ValueComments
UL RTI, Electrical 130 °C
@Thickness 0.750 mm
UL 746B
 130 °C
@Thickness 1.60 mm
UL 746B
 130 °C
@Thickness 3.00 mm
UL 746B
UL RTI, Mechanical with Impact 130 °C
@Thickness 0.750 mm
UL 746B
 130 °C
@Thickness 1.60 mm
UL 746B
 130 °C
@Thickness 3.00 mm
UL 746B
UL RTI, Mechanical without Impact 130 °C
@Thickness 0.750 mm
UL 746B
 130 °C
@Thickness 1.60 mm
UL 746B
 130 °C
@Thickness 3.00 mm
UL 746B
Flammability, UL94 V-0
@Thickness 0.750 mm
IEC 60695-11-10
 V-0
@Thickness 0.750 mm
UL94
 V-0
@Thickness 1.60 mm
IEC 60695-11-10
 V-0
@Thickness 1.60 mm
UL94
 V-0
@Thickness 3.00 mm
IEC 60695-11-10
 V-0
@Thickness 3.00 mm
UL94
 
Descriptive Properties
Contains Flame RetardantYes
Heat StabilizedYes
Polymer FamilyPolyimide
Polymer TypePI
Region AvailableAmericas
 Asia/Pacific
 Europe

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