Carbon Fiber Insulation
EXNP-N Carbon Fiber Insulation Board
Rigid needle-punch carbon fiber insulation board with no surface coating. The base EXNP grade offering maximum thermal insulation with natural carbon fiber surface — ideal for internal hot-zone linings where no coating is required.
✓ Export ready
Custom sizes
OEM accepted
Key features
Product overview
EXNP-N — Uncoated Rigid Carbon Fiber Insulation Board
The EXNP-N is the base grade of Expo's proprietary EXNP needle-punch rigid insulation board series. Manufactured using Expo's exclusive needle-punch technology, it is the only rigid carbon fiber insulation board produced in India without Chinese sourcing.
Key Features
- No surface coating — pure carbon fiber felt structure
- Excellent thermal insulation up to 2800 °C in inert/vacuum atmospheres
- Low bulk density (0.14–0.20 g/cm³) minimises hot-zone thermal mass
- Low ash content (<100 ppm standard; <15 ppm high-purity grade)
- Rigid panel construction — no sagging or delamination
- Machineable to tight tolerances; bolt-on or cemented installation
Applications
- Vacuum furnace hot-zone cylindrical and flat wall linings
- CVD / CVI / CVR reactor insulation
- Graphite purification furnaces
- Silicon crystal growing furnaces
- Carbon fiber heat treating furnaces
Technical Specifications
| Property | Unit | Value |
|---|---|---|
| Bulk Density | g/cm³ | 0.14 – 0.20 |
| Flexural Strength | MPa | 1.0 – 2.0 |
| Compressive Strength | MPa | 6.0 – 9.8 |
| Thermal Conductivity | W/m·K | 0.1 – 0.2 |
| Electrical Resistivity | μΩ·m | 3.0 – 4.0 |
| Ash Content (Standard) | ppm | < 100 |
| Ash Content (High Purity) | ppm | < 15 |
| Max Flat Size | mm | 1500 × 1500 × 300 |
Technical specifications
| Bulk Density | 0.14 – 0.20 |
| Flexural Strength | 1.0 – 2.0 |
| Compressive Strength | 6.0 – 9.8 |
| Thermal Conductivity | 0.1 – 0.2 |
| Electrical Resistivity | 3.0 – 4.0 |
| Ash Content (Standard) | < 100 |
| Ash Content (High Purity) | < 15 |
| Max Size (Flat) | 1500 × 1500 × 300 |
| Max Size (Cylinder Die) | Ø1500 × H2500 |
Why Expo Advanced Materials
TOYO TANSO Japan authorised partner — premium isostatic graphite grades with full raw-material traceability
Qualified supplier to ALD Vacuum Technologies — supplying graphite components to vacuum furnace operations globally
Full MTC + dimensional inspection report with every shipment
Custom machined to your DXF, STEP, PDF or IGES drawings within 2–4 weeks
ISO 9001:2015 certified | Export to 16+ countries | 24-hour quote turnaround
