RFQ Preparation Checklist
- Load requirements
- Operating temperature
- Dimensions
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High-Temperature Carbon Composites
Utilizing Carbon/Carbon (C/C) composites to solve structural challenges in high-temperature environments where traditional graphite fails due to brittleness.
Target Buyer:Engineers pushing the limits of high-temperature fixturing.
Solution Highlights
- Exceptional strength-to-weight
- Thermal shock immunity
- Longer lifespan than graphite
Common Use Cases
- Heavy Load Sintering
- Aerospace Processing
Implementation Focus
- Load calculations
- Fiber orientation (2D vs 3D)
Application Evaluation Matrix
| Evaluation Metric | Typical Range | Buyer Relevance |
|---|---|---|
| Flexural Strength | > 120 MPa | Carries heavy loads without sagging. |
| Fiber Architecture | 2D or 3D C/C composite by load direction | Fiber orientation controls strength, thread retention, and long-term deformation. |
| Operating Atmosphere | Vacuum or inert gas; oxidation protection if required | C/C composite strength is excellent at temperature, but oxygen exposure must be managed. |
| Load Case | Static load, fixture spacing, and thermal-cycle count | Tray sag, bolt shear, and creep risk depend on the real support condition. |
Application Selection Logic
| Decision Factor | Selection Logic | Buyer Check |
|---|---|---|
| Load at temperature | Choose C/C composite when graphite is too brittle or molybdenum adds too much thermal mass. | Provide load, support spacing, furnace temperature, and cycle count. |
| Fiber architecture | 2D C/C can fit plates and trays; 3D architecture is preferred for multi-directional stress and threads. | Clarify bending direction, thread engagement, and any fastener preload. |
| Oxidation boundary | C/C composite is strongest in vacuum or inert environments; oxygen exposure needs protection. | Share atmosphere, leak risk, cleaning practice, and cooldown handling. |
Application Delivery and QC Flow
| Stage | Delivery / QC Checkpoint | Buyer Evidence |
|---|---|---|
| 1. Load-case review | Define temperature, support spacing, fastener preload, tray load, and cycle count. | Application sketch, fixture drawing, load estimate, and atmosphere notes. |
| 2. Fiber architecture | Choose 2D or 3D C/C blank according to bending, shear, and thread loads. | Material route with density and architecture recommendation. |
| 3. Densification and machining | Process C/C blank, then machine threads, holes, plates, and tray geometry. | Dimensional report for load-bearing and assembly-critical features. |
| 4. Strength-risk check | Review delamination, thread stripping, sag, and edge damage before shipping. | Visual inspection plus agreed mechanical evidence if required. |
| 5. Handling and packing | Prevent abrasion and impact on lightweight C/C fixtures during export. | Packing photos and handling notes for furnace maintenance teams. |
Risk and Mitigation
- Oxidation: Available with oxidation-resistant coatings for specific atmospheres.
Recommended Products
Buyer FAQ
Is C/C more expensive than graphite?
Initial cost is usually higher, but total cost can improve when the application benefits from longer service life and reduced maintenance.
When is C/C composite a better choice than graphite?
Choose C/C composite when the part carries load, sees repeated thermal shock, needs threaded strength, or fails because graphite is too brittle.
What information is needed for C/C tray or fastener design?
Provide load, support spacing, maximum temperature, atmosphere, cycle count, thread standard, and the current failure mode if replacing another material.
Can C/C composite be used in oxidizing atmospheres?
C/C composite performs best in vacuum or inert gas. If oxygen exposure is expected, the application needs oxidation-risk review and possible protective treatment.
Related Resources
From Application Review to RFQ
- Select matching graphite, SiC coated, or C/C products for the validated process window.
- Review purity and ash-control capability before specifying trace-metal acceptance criteria.
- Prepare drawing-based custom part inputs including CAD files, tolerances, surface finish, and volume forecast.
- Send an application RFQ with furnace model, temperature, atmosphere, replacement cycle, and destination country.
Inquiry Email
Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.
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WhatsApp Engineering Support
Best for quick drawing checks, process fit questions, and RFQ clarification.