DuPont™ Nomex® Type 994, 250 mil Nominal Thickness Rigid Aromatic Nylon Board

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DuPont™ Nomex® Type 994, 250 mil Nominal Thickness Rigid Aromatic Nylon Board
Categories:	Polymer; Thermoplastic; Nylon (Polyamide PA); Nylon, Aromatic
Material Notes:	Type 994 is a densified, rigid board which has a unique combination of superior resistance to compression, even at elevated temperatures, along with relatively high oil absorption characteristics. This combination results in a product which is especially useful as spacers or other structural components in liquid-filled systems.
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Physical Properties	Metric	English	Comments

Density	1.13 g/cc	0.0408 lb/in³	Calculated number using basis weight and thickness
Thickness	6340 microns	250 mil	ASTM D374, method D, using 17 N/cm²
Linear Mold Shrinkage	0.0020 cm/cm	0.0020 in/in	ASTM D3392
Linear Mold Shrinkage, Transverse	0.0020 cm/cm	0.0020 in/in	ASTM D3392

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	84	84	ASTM D2240
Film Tensile Strength at Yield, MD	110 MPa	16000 psi	ASTM D828
Film Tensile Strength at Yield, TD	72.0 MPa	10400 psi	ASTM D828
Flexural Strength	8.00 MPa	1160 psi	XD; ASTM D790
	9.00 MPa	1310 psi	MD; ASTM D790
Flexural Modulus	0.365 GPa	52.9 ksi	XD; ASTM D790
	0.415 GPa	60.2 ksi	MD; ASTM D790
Izod Impact, Unnotched	2.85 J/cm	5.34 ft-lb/in	XD; ASTM D256
	3.55 J/cm	6.65 ft-lb/in	MD; ASTM D256
Compression Set	0.20 %	0.20 %	ASTM D3392

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+16 ohm-cm	1.00e+16 ohm-cm	in air; ASTM D257
Surface Resistivity per Square	1.00e+17 ohm	1.00e+17 ohm	in air; ASTM D257
Dielectric Constant	3.5 @Frequency 60 Hz	3.5 @Frequency 60 Hz	in air; ASTM D150
Dissipation Factor	0.010 @Frequency 60 Hz	0.010 @Frequency 60 Hz	in air; ASTM D150

Thermal Properties	Metric	English	Comments
Oxygen Index	20.8 % @Temperature 380 °C	20.8 % @Temperature 716 °F	Flammability threshold; ASTM D2863
	29 % @Temperature 220 °C	29 % @Temperature 428 °F	ASTM D2863
	39 % @Temperature 25.0 °C	39 % @Temperature 77.0 °F	ASTM D2863

Descriptive Properties
Basis Weight (g/m²)	ASTM D3394
Compressibility (%)	1.2		ASTM D3392

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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PMUE023 / 108404

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