Flexible Composite Materials
NHN – 6650
Nomex® aramid paper / polyimide film / Nomex® aramid paper, Class H
6650 NHN is a three-layer flexible composite of polyimide film bonded with glossed polyarylamide fiber paper using a Class H adhesive, for slot, phase and turn insulation in Class H and 200-class motors.
Class H (180°C)0.15–0.35 mmBreakdown ≥8–10 kV
- Temperature class
- Class H (180°C)
- Thickness
- 0.15–0.35 mm
- Width
- 5–914 mm
- Temperature index TI
- ≥180
Request a quotation or a sample. Tell us thickness, width, temperature class, quantity and delivery form. We reply within one business day.
Technical data
| Property | Unit | Value |
|---|---|---|
| Type | — | 6650 NHN (AHA available) |
| Structure | — | Nomex® aramid paper + polyimide film + Nomex® aramid paper |
| Nominal thickness | mm | 0.15 / 0.17 / 0.20 / 0.23 / 0.25 / 0.30 / 0.35 |
| Thickness tolerance | mm | ±0.02 / ±0.03 / ±0.04 / ±0.05 |
| Grammage | g/m² | 155±25 – 330±50 |
| Polyimide film thickness | µm | 50 / 75 / 100 / 125 / 150 / 190 / 250 |
| Tensile strength MD, unbent / after bending | N/10 mm | ≥120–270 / ≥70–180 |
| Breakdown voltage, unbent | kV | ≥8 / ≥9 / ≥10 |
| Heat treatment 200°C ±2°C, 10 min | — | No delamination, no blister, no adhesive flow |
| Temperature index (TI) | — | ≥180 |
| Temperature class | — | Class H (180°C) |
Values are typical values or ranges from our product data. Bulk supply is subject to the approved specification, sample and test report. If a parameter you need is not listed here, ask our engineers for the full test report for that grade.
Key features
- Polyimide film provides high heat resistance and dielectric strength.
- Aramid paper surfaces resist tearing and impregnation for Class H motors.
- Three-layer hot-pressed structure for dimensional stability and delamination resistance.
Applications
Slot, phase and turn insulation in Class H motors, generators and transformers; high-temperature appliances.
Electric Motors & GeneratorsDry-Type TransformersSwitchgear & Electrical Equipment
Why it fits
Class H systems need the polyimide core - aramid-faced so it survives handling and impregnation.
Ordering information
To receive a quotation, please confirm:
- Product and grade
- Thickness and width (and roll or sheet size)
- Temperature class
- Quantity and delivery form (roll / sheet / die-cut / machined)
- Destination port and required delivery date
For machined parts, attach a drawing in PDF, DWG or STEP format. Datasheets, COAs and batch test data are available on request.
Related materials
Often specified together
Send your specification
Our export team reviews the application, the process and the existing specification before recommending a construction.