High-purity carbon felt for thermal insulation systems and carbon-carbon composite manufacturing.
Inkarbo supplies high-purity carbon felt with ash content as low as 20 ppm for thermal insulation systems and carbon-carbon composite manufacturing.
We specialize in low thermal conductivity carbon felt for high-temperature vacuum furnace insulation up to 2800°C, delivering outstanding energy efficiency and thermal stability.
We offer PAN-based and Rayon-based carbon felts, allowing customers to select the optimal material for insulation performance, purity requirements, and operating temperatures.
Our rayon-based carbon felts provide exceptionally low thermal conductivity and outstanding thermal efficiency at elevated temperatures. Compared to conventional PAN-based grades, they can deliver up to 3–4 times lower thermal conductivity, helping furnace manufacturers reduce energy consumption, improve temperature uniformity, and increase process stability inside the hot zone.
High purity, low ash content, low thermal conductivity and stable performance in high-temperature vacuum furnace insulation systems.
| Parameter | INK-PSF-1 | INK-PSF-3 |
|---|---|---|
| Carbon Content | ≥99.8% | ≥99.95% |
| Ash Content | ≤2000 ppm | ≤500 ppm |
| Density | 0.13–0.15 g/cm³ | 0.11–0.13 g/cm³ |
| Processing Temperature | 1000°C | 2000°C |
| Vacuum Service Temperature | 1200–1800°C | 1600–2800°C |
| Parameter | RSF-3 | RSF-3H |
|---|---|---|
| Carbon Content | ≥99.95% | ≥99.99% |
| Ash Content | ≤500 ppm | ≤50 ppm |
| Density | 0.085–0.110 g/cm³ | 0.085–0.110 g/cm³ |
| Processing Temperature | 1900°C | 2100°C |
| Vacuum Service Temperature | 1600–2000°C | 1800–2500°C |
One of the most important characteristics of carbon felt is its extremely low thermal conductivity, which minimizes heat loss and improves furnace energy efficiency.
| Material Grade | 25°C (W/m·K) | 1000°C (W/m·K) | 1500°C (W/m·K) |
|---|---|---|---|
| PSF-1 (PAN) | <0.25 | <0.40 | <0.60 |
| PSF-3 (PAN) | <0.30 | <0.50 | <0.70 |
| RSF-3 (Rayon) | <0.07 | <0.18 | <0.25 |
| RSF-3H (Rayon) | <0.07 | <0.20 | <0.30 |
| RSF-3HP (Rayon) | <0.10 | <0.25 | <0.40 |
Inkarbo offers PAN-based and Rayon-based carbon felts for different insulation performance, purity and temperature requirements.
Cost-Effective Thermal Insulation
Premium Insulation for Extreme Temperatures
Typical production range. Custom dimensions may be available upon request.
Thickness
Width
Roll length
Dimensions upon request
