Sylramic™ Silicon Carbide Fiber
A 10 µm diameter crystalline Silicon Carbide (SiC) fiber with the highest temperature capability of any available SiC fiber. Sylramic™ is manufactured by COI Ceramics, Inc. (COIC) and is commercially available as tow.
Benefits
Highest Temperature Capability of any SiC Fiber
- 1400°C/2252°F
Increases Product
- Strength
- Toughness
- Chemical Resistance
- High Temperature Creep Resistance
Reinforces Composites
- Ceramic (CMC)
- Polymer (PMC)
- Metal (MMC)
Fiber Interface Coating
- Will recommend providers
Potentially Used For
- Aircraft
- Land-Based Turbine Engines
- Hypersonic Vehicles
- Thermal Protection Systems
- Chemical Manufacturing
Forms
Tow
Continuous tow is supplied on 3 inch diameter cardboard spools. Lengths up to 800 meters (145 grams) are available. Tow length may vary depending upon availability and requirements.
- 3" Diameter Cardboard Spools
- < 800m Length Available (145g weight)
Woven
As a textile grade yarn, Sylramic™ SiC Fiber can be readily incorporated into a variety of weaves, woven tapes, braids, etc. A network of U.S. contractors exists to respond to your exact needs. Contact Us to discuss specifics and receive further information.
- Plain Weave
- 5 Harness Satin
- 8 Harness Satin
- Woven Tapes
- Braids
- and more
Compared to Other Materials
Sylramic™ SiC Fiber overcomes the disadvantages of other materials. Oxide fibers and superalloys may lose their mechanical properties above 800°C (1472°F). SiCO fibers lose mechanical properties above 1000°C (1832°F), while amorphous SiC fibers lose mechanical properties above 1200°C (2192°F). Larger diameter (100 µm), crystalline SiC fibers are not easily woven.
Sylramic™ SiC Fiber has excellent room temperature strength and stiffness. The fiber has excellent creep resistance, maintaining strength and stiffness for extended times at extremely high temperatures (> 1400°C / 2252°F). These fiber properties are due to its chemical composition, crystalline structure, small crystal size, and very low oxygen content. This also allows composites to have excellent wear and corrosion resistance.
Sylramic™ vs Other Fiber Materials
| Material | Temperature Resistance |
|---|---|
| Sylramic™ | 1400°C / 2252°F |
| Oxide Fibers | 800°C / 1472°F |
| SiCO | 1000°C / 1832°F |
| Amorphous SiC | 1200°C / 2192°F |
Typical Properties
| Characteristic | Unit | Typical |
|---|---|---|
| Diameter | µm | 10 |
| Denier | g/9000 m | 1600 |
| Filaments | per tow | 800 |
| Density | g/cm3 | >2.95 |
| Oxygen | wt% | <0.5 |
| Tensile Strength (RT) | ksi | >400 |
| Modulus (RT) | Msi | >45 |
| Thermal Conductivity | W/m-K | 40-44 |
| Composition | Crystal Size (µm) | % |
|---|---|---|
| SiC | 0.1 - 0.5 | 96 |
| TiB2 | 0.5 | 3 |
| B4C | 0.1 | 1 |
| Oxygen | -- | 0.3 |
How Can We Help?
Our experienced team is happy to assist you! Please contact us for more information.
