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Grade: DuPont™ Nomex® T410
Formula: Polymetaphenylene isophthalamide
Form: Coil
Material: Polyaramid
Commodity: Polymers
Production Method: Calendered Paper

Nomex® T410 Polyaramid Coil (Polymetaphenylene isophthalamide)

Nomex® T410 Polyaramid Coil (Polymetaphenylene isophthalamide) delivers a calendared aramid paper in a production-friendly roll for continuous electrical insulation. It pairs high inherent dielectric strength with mechanical toughness and resilience, so slot liners, phase barriers, and layer wraps stay intact through winding, insertion, varnish or resin processing, and service heat. The smooth, densified surface helps laminates bond cleanly and allows tight bends without excessive fiber lift, while the core aramid chemistry brings long-term thermal endurance that conventional polymer films struggle to match. Motor, generator, and transformer designers rely on T410 coils to build compact insulation systems that resist partial discharge, maintain clearances, and remain dimensionally stable after bake and cool-down. In drives, converters, and energy equipment, it supports clean edges and repeatable die-cuts, reducing rework on line. For R&D and production alike, T410 coil is a versatile, halogen-free dielectric that streamlines continuous processes and delivers dependable performance across demanding electrical environments.
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Tolerances

Coil
Thickness ±20%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Good-Fair
Alcohols Good
Alkalis Good-Poor
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good
Ketones Good
Electrical Properties
Element Value
Dielectric constant @1kHz 2.3
Dielectric strength( kV mm⁻¹ ) 32
Volume resistivity( Ohmcm ) 6x10¹⁶
Physical Properties
Element Value
Radiation resistance Good
Limiting oxygen index( % ) 29
Water absorption - equilibrium( % ) 9
Water absorption - over 24 hours( % ) 0.08
Density( gcm⁻³ ) 1.38
Mechanical Properties
Element Value
Elongation at break( % ) 9
Izod impact strength( J m⁻¹ ) 533unnotched
Tensile strength( MPa ) 1800-3900
Thermal Properties
Element Value
Heat-deflection temperature - 1.8MPa( C ) 149
Upper working temperature( C ) 200-300
Specific heat( J K⁻¹ kg⁻¹ ) 1200
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.13@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 20

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