Nomex® Characteristics
Nomex® – a synthetic aromatic polyamide polymer – is a heat-resistant insulation that offers an excellent combination of strength, durability and dielectric properties. This thermoset material is moisture-resistant and cryogenic-compatible with good mechanical stability. Nomex® has been widely adopted as electrical insulation for liquid and dry transformers, motors and generators.
Characteristics include:
Excellent heat, chemical and radiation resistance- High dielectric strength
- Mechanical stability
- Moisture-resistant
- Cryogenic-compatible
Applications for Nomex®
- Circuit boards
- Motors
- Generators
- Electrical equipment
Contact a Dielectric Manufacturing knowledge expert to discuss the use of Nomex® synthetic aromatic polyamide polymer for your application. Call 800-367-9122 or email sales@dielectricmfg.com.
Dielectric Manufacturing, Richfield, Wisconsin USA dielectricmfg.com Nomex Synthetic Aromatic Polyamide Polymer Material Properties Provided By Dielectric Manufacturing, Richfield, Wisconsin
Property 10 mil 12 mil 15 mil Test Method
Nominal Thickness (mm) 0.25 0.30 0.38
Typical Thickness *1
ml 10.2 12.2 15.2 ASTM D-374
mm 0.26 0.31 0.39 ASTM D-374
Basis Weight (g/m2) 249 309 397 ASTM D-646
Density (g/cc) 0.96 1.00 1.03
Tensile Strength (N/cm)
MD 285 378 459 ASTM D-828
XD 152 196 252
Elongation (%)
MD 19 22 19 ASTM D-828
XD 15 17 14
Elmendorf Tear (N)
MD 6.0 7.4 9.5 TAPPI-414
XD 10.8 14.2 17.2
Initial Tear *2 Strength (N)
MD 71 93 116 ASTM D-1004
XD 42 55 74
Shrinkage at 300°C (%)
MD 0.4 0.4 0.3
XD 0.1 0.2 0.2
MD = machine direction of paper XD = cross direction of paper
1 Method D; 17 N/cm2
2 Data presented for Initial Tear Strength is listed in the direction of the sample per ASTM D-1004. The tear is 90 degrees to sample direction – hence for papers with a higher reported MD ITR, the paper will be tougher to tear in the cross direction.
