Ceramic Fiber Papers and Felts
Ceramic fiber is the choice for high temperature insulation and shielding. It’s a lightweight refractory material processed from high purity alumina-silica fibers formed into a nonwoven flexible sheet and mat. The material is typically used in applications where high temperature resistance, insulating efficiency, and high strength are required. These papers and felts exhibit excellent chemical stability, with the exception of resistance against hydrofluoric acid, phosphoric acid, and concentrated alkalis. Felt extends the performance of paper with lower densities and increases mat thicknesses, which enables conformability to irregular surfaces while holding shape. These materials are available with BMS9-19 & AMS 3680 Rev C. approval.
Applications include: Automotive muffler insulation, aerospace heat shields, appliance ovens, wood burning stoves
- High-temperature stability
- Low thermal conductivity
- Thermal shock resistance
- High heat reflectance
- Good dielectric strength
- Excellent corrosion resistance
- Lightweight
| Ceramic Fiber Papers | Ceramic Fiber Felts | ||||||||
| Property | Units | 550 L | 970 L | 1530 L | K - 700 | 3000 L | K-Shield | K-Shield LS | K-Shield AG |
| Product Brands | Lydall Lytherm, Unifrax Fiberfrax. Morgan Advanced Materials Kaowool | Unifrax Fiberfrax, Lo-Con, Duraset. Morgan Advanced Materials Cerafelt, K-Shield | |||||||
| Density (post compression) | lb / ft 3 | 6-9 | 6-9 | 6-9 | 11-13 | 8 | 6 | 6 | 6 |
| Loss on Ignition | % | 8.0 | 8-10 | 8-10 | 6-10 | 8.0 | 2-5 | 2-6 | 2-5 |
| Machine Direction Tensile | lb / in | 7.72 | 16.53 | 26.46 | 10-20 | 10-20 | 5-10 | ||
| Cross Directional Tensile | lb / in | 4.41 | 13.23 | 13.23 | |||||
| Thermal Conductivity @ 75 °F | K Factor | 0.29 | 0.30 | 0.31 | 0.31 | ||||
| Thermal Conductivity @ 1000 °F | K Factor | 0.51 | 0.50 | 0.57 | 0.63 | 0.48 | 0.68 | 0.65 | 0.72 |
| Thermal Conductivity @ 2000 °F | K Factor | 1.05 | 1.02 | 1.00 | 1.38 | 1.06 | 1.82 | 1.51 | 1.58 |
| Operating Temperature | °F | ≥ 2300 | ≥ 2300 | ≥ 2300 | ≥ 2300 | ≥ 3000 | ≥ 2300 | ≥ 2300 | ≥ 2300 |
| Melting Point | °F | > 3200 | > 3200 | > 3200 | > 3200 | > 3600 | > 3200 | > 3200 | > 3200 |