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Ensinger PEI

DuPont™ Nomex® Type 993, 160 mil Nominal Thickness Medium-Density Aromatic Nylon Pressboard
Categories: Polymer; Thermoplastic; Nylon (Polyamide PA); Nylon, Aromatic
Material Notes: Type 993 is a medium-density pressboard which offers a balance of rigidity and conformability along with outstanding saturability and excellent properties in air and oil. Typical applications include 3-dimensional parts such as V-rings, angle rings and spools, as well as barrier, gap spacers and core tubes.
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Physical PropertiesMetricEnglishComments
Density 0.820 g/cc0.0296 lb/in³Calculated number using basis weight and thickness
Thickness 4150 microns163 milASTM D374, method D, using 17 N/cm²
Linear Mold Shrinkage  0.0040 cm/cm0.0040 in/inASTM D3392
 0.012 cm/cm0.012 in/inASTM D3392
Linear Mold Shrinkage, Transverse  0.0060 cm/cm0.0060 in/inASTM D3392
 0.015 cm/cm0.015 in/inASTM D3392
 
Mechanical PropertiesMetricEnglishComments
Film Tensile Strength at Yield, MD 49.1 MPa7120 psiASTM D828
Film Tensile Strength at Yield, TD 45.3 MPa6570 psiASTM D828
Film Elongation at Yield, MD 14.7 %14.7 %ASTM D828
Film Elongation at Yield, TD 15.3 %15.3 %ASTM D828
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity  1.00e+17 ohm-cm
@Temperature 130 °C		1.00e+17 ohm-cm
@Temperature 266 °F		in oil; ASTM D257
 1.00e+18 ohm-cm
@Temperature 90.0 °C		1.00e+18 ohm-cm
@Temperature 194 °F		in oil; ASTM D257
Dielectric Constant  3.6
@Frequency 60 Hz,
Temperature 25.0 °C		3.6
@Frequency 60 Hz,
Temperature 77.0 °F		in oil; ASTM D150
 3.7
@Frequency 60 Hz,
Temperature 90.0 °C		3.7
@Frequency 60 Hz,
Temperature 194 °F		in oil; ASTM D150
 3.8
@Frequency 60 Hz,
Temperature 130 °C		3.8
@Frequency 60 Hz,
Temperature 266 °F		in oil; ASTM D150
Dielectric Strength 19.0 kV/mm483 kV/inAC rapid rise in air; ASTM D149
 27.0 kV/mm686 kV/inAC rapid rise in oil; ASTM D149
 60.0 kV/mm1520 kV/inFull wave impulse in oil; ASTM D3426
Dissipation Factor  0.0050
@Frequency 60 Hz,
Temperature 90.0 °C		0.0050
@Frequency 60 Hz,
Temperature 194 °F		in oil; ASTM D150
 0.0060
@Frequency 60 Hz,
Temperature 130 °C		0.0060
@Frequency 60 Hz,
Temperature 266 °F		in oil; ASTM D150
 0.0070
@Frequency 60 Hz,
Temperature 25.0 °C		0.0070
@Frequency 60 Hz,
Temperature 77.0 °F		in oil; ASTM D150
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity  0.0950 W/m-K
@Temperature 125 °C		0.659 BTU-in/hr-ft²-°F
@Temperature 257 °F		ASTM D1674
 0.100 W/m-K
@Temperature 175 °C		0.694 BTU-in/hr-ft²-°F
@Temperature 347 °F		ASTM D1674
 0.1025 W/m-K
@Temperature 220 °C		0.7114 BTU-in/hr-ft²-°F
@Temperature 428 °F		ASTM D1674
 
Descriptive Properties
Basis Weight (g/m²)ASTM D3394

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