Carbon Carbon Composite Plate and Fixture for Aerospace Furnace
Product Overview
Our carbon-carbon composite plates and fixtures are high-strength, lightweight structural components used in aerospace heat treatment furnaces, ceramic matrix composite processing, and high-temperature aerospace component manufacturing. Carbon-carbon (C/C) composite material combines carbon fiber reinforcement with a carbon matrix, delivering strength-to-weight performance that exceeds graphite at elevated temperatures. We manufacture C/C plates, support beams, and custom furnace fixtures for aircraft brake disc sintering, SiC ceramic matrix composite processing, and vacuum furnace tooling where low mass and high temperature strength are critical.
Carbon-carbon composite fixtures offer major advantages over solid graphite in high-temperature aerospace furnaces: they are 30-50% lighter, have 3-5x higher tensile and flexural strength, and do not fracture catastrophically under thermal shock. At Jincheng Graphite, we work with C/C composite material to fabricate custom furnace furniture including hearth plates, support posts, frame structures, and part-specific fixtures. Our engineering team can design C/C fixtures that reduce furnace mass, improve thermal uniformity, and extend fixture service life vs. conventional graphite tooling.
Key Features
- High strength-to-weight - 3-5x stronger than graphite at a fraction of the weight
- Excellent thermal shock resistance - does not crack under rapid temperature cycling
- Lightweight - 30-50% lighter than solid graphite fixtures
- High temperature performance - retains strength up to 2500°C in inert/vacuum
- Custom fabrication - plates, beams, frames, and complex fixtures
- Low thermal mass - faster furnace heating and cooling cycles
- Non-catastrophic failure - gradual fiber-tear failure vs. brittle graphite fracture
- Long service life - durable through thousands of thermal cycles
Technical Specifications
| Parameter | Value |
|---|---|
| Material | 2D / 3D carbon-carbon composite |
| Bulk Density | 1.40 - 1.60 g/cm³ |
| Flexural Strength | 150 - 250 MPa (directional) |
| Tensile Strength | 100 - 200 MPa (directional) |
| Compressive Strength | 120 - 180 MPa |
| Max Temperature | 2500°C (vacuum/inert) |
| Thermal Expansion | 1.0 - 2.0 × 10⁻⁽/K (in-plane) |
| Thermal Conductivity | 40 - 100 W/m·K (directional) |
| Plate Thickness | 3 - 20 mm (laminated) |
| Max Plate Size | 600 × 1200 mm (laminated panels) |
| Dimensional Tolerance | ±0.3 mm |
| Coating Option | SiC coating for oxidation resistance in air |
Applications
- Aircraft brake disc sintering - C/C trays and fixtures for carbon brake manufacturing
- SiC ceramic matrix composites - process fixtures for CMC aerospace components
- Aerospace heat treatment - lightweight furnace furniture for titanium and superalloy processing
- Rocket nozzle and throat - C/C structural components for solid rocket motors
- Friction materials - C/C plates for high-performance brake systems
- Advanced R&D furnaces - lightweight structural fixtures for research high-temperature furnaces
Why Choose Jincheng Graphite?
- C/C composite fabrication - expertise in machining and assembling C/C material
- Lightweight fixture design - reduce furnace mass and cycle time
- Custom engineering - design C/C furniture from your load and chamber requirements
- Hybrid C/C + graphite - combine C/C structure with graphite contact surfaces
- SiC coating option - oxidation protection for partial air exposure
- Cost effective - lower C/C fixture cost vs. European or American suppliers
- Technical consultation - we help choose between graphite and C/C for your application
- Global delivery - aerospace and advanced ceramics manufacturers worldwide
FAQ
Q: When should I choose C/C composite over solid graphite?
A: Choose C/C when fixture weight matters (reducing furnace mass), when thermal shock resistance is critical, or when you need a fixture that will not shatter catastrophically. Solid graphite is more cost-effective for simple flat plates and static supports. We can help evaluate your specific application.
Q: Can C/C fixtures be used in air?
A: Uncoated C/C oxidizes above 400°C in air. For air exposure, we recommend applying a SiC or CVD SiC coating that extends usable temperature to 1600°C in oxidizing atmospheres. For vacuum or inert gas use, no coating is needed.
Q: How does the cost compare to graphite?
A: C/C composite fixtures are typically 3-5x more expensive than equivalent solid graphite fixtures. However, their much longer service life and reduced furnace mass often justify the investment in high-volume production furnaces. We can design a cost-optimized hybrid solution.
Q: Can you repair damaged C/C fixtures?
A: Minor surface damage can be repaired with carbon-based filler and re-infiltration. Structural damage requires component replacement. We recommend inspecting C/C fixtures during scheduled furnace maintenance.
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