3K Carbon Fiber Sheet/Laminate
3K Weave | Grade-A Gloss Finish | Quasi-Isotropic | All-Scenario Lightweight Solution
I. Product Definition
Made from high-strength PAN-based carbon fibers (T300/T700/T800 grade, 3,000 filaments per tow), our 3K carbon fiber sheet is a high-performance laminate impregnated with epoxy resin or high-temperature thermoplastics (such as PEEK or PPS). The material is hot-pressed and cured under 0.3–5 MPa at 120–180°C. The surface retains the iconic 3K twill or plain weave, offering both mechanical strength and aesthetic appeal. Internally, it features 0°/90°/±45° quasi-isotropic lay-up for balanced in-plane strength and stiffness.
II. Key Advantages
- High Strength & Lightweight: Density of 1.55 g/cm³; tensile strength ranges from 3400 to 5200 MPa; specific strength is 5–7 times that of 7075-T6 aluminum.
- Dimensional Stability: Coefficient of thermal expansion <1.5×10⁻⁶ /°C; rigidity maintained under 200°C.
- Premium Surface Quality: 3K plain/twill weave + high-gloss UV coating; Grade-A mirror finish with no pinholes; suitable for exposed parts.
- Durability: Salt spray resistance up to 1000 hours; resistant to acid and alkali (pH 3–11).
- Machinability: CNC milling, drilling, tapping, and waterjet cutting without delamination or chipping.
III. Technical Specifications
| Property | T300 Grade | T700 Grade | T800 Grade |
|---|---|---|---|
| Density (g/cm³) | 1.50 | 1.55 | 1.55 |
| Tensile Strength (MPa) | 3400 | 4900 | 5200 |
| Elastic Modulus (GPa) | 240 | 250 | 295 |
| Interlaminar Shear (MPa) | 85 | 90 | 95 |
| Operating Temp (°C) | −50~180 | −50~180 | −50~200 |
IV. Stock Dimensions
Standard Thickness (Tolerance ±0.1 mm):
0.2 / 0.3 / 0.4 / 0.5 / 1.0 / 1.5 / 2.0 / 2.5 / 3.0 / 4.0 / 5.0 / 6.0 / 8.0 / 10.0 mm; max customizable up to 50 mm.
Standard Sheet Size (Length × Width in mm):
| Size (mm) | Thickness Range (mm) | Application Example |
|---|---|---|
| 100×500 | 1–10 | Prototyping, Models |
| 200×300 | 0.5–10 | Drone Bulkheads |
| 400×400 | 1–10 | Electronic Casings |
| 400×500 | 2–6 | Medical CT Bed Panels |
| 500×500 | 2–8 | Optical Equipment Bases |
| 500×600 | 2–10 | Automotive Interior Parts |
| 500×1200 | 1–5 | Sports Reinforcement Inserts |
| 600×1000 | 1–6 | Automation Fixtures |
| 1000×1000 | 1–10 | General Purpose |
| 1000×1200 | 2–6 | Aerospace Interior Panels |
| 1200×1600 | 1–4 | Large Format Panels |
Max Custom Size: 1500×3000 mm; thickness 0.2–50 mm.
V. Surface Finish Options
- Weave Types: 3K Plain Gloss, 3K Plain Matte, 3K Twill Gloss, 3K Twill Matte.
- Colors: Black (default), Silver, Red, Gold, Blue.
- Custom Processing: Laser-engraved logos, CNC V-grooves, perforation, edge painting, silkscreen scales.
VI. Resin System Options
| Resin Type | Characteristics | Applications |
|---|---|---|
| Epoxy (Thermoset) | High strength, cost-effective, easy to machine | Drones, Automotive, Sports Gear |
| PEEK (Thermoplastic) | 250°C resistance, self-lubricating, recyclable | Aerospace, Medical, Semiconductors |
| PPS (Thermoplastic) | Chemical-resistant, flame-retardant V-0 | Rail Transit, Battery Housing |
VII. Post-Processing Capabilities
- CNC Milling: Hole tolerance ±0.05 mm, minimum slot width 0.8 mm.
- Waterjet Cutting: Complex shapes, no heat-affected zones.
- Metal Inserts: Aluminum/Titanium/Stainless Threaded Sleeves, Copper Posts, Copper Mesh EMI Layers.
- Bonding: Epoxy structural adhesive + vacuum bagging for metal-carbon hybrid structures.
VIII. Typical Applications
- Aerospace: Wing inspection hatches, satellite solar panel brackets, cabin interior panels.
- Medical Equipment: CT bed plates, X-ray grid filters, surgical arm enclosures.
- Automotive: Chassis reinforcements, battery pack lids, center console panels.
- Sports & Leisure: Bicycle chain guards, surfboard fins, RC car chassis.
- Electronics & Communication: 5G base station reflectors, laptop shells, VR headset brackets.
IX. Ordering & Delivery
- MOQ: 1 sheet (in-stock); 10 sheets (custom orders).
- Lead Time: 24 hours (stock); 3–7 days (custom); +2 days for CNC machining.
- Packaging: Double-layer PE film → Foam spacer → Carton/Wooden box; vacuum-bag + pallet for large sizes.
- Certificates: Batch test report, RoHS, REACH, UL94 (for flame-retardant versions).
Offline Contracts
All sales of our carbon fiber materials are conducted through offline contract agreements to ensure each order precisely meets your specifications, compliance requirements, and agreed payment terms. Please contact our sales team to initiate the contract process and discuss project details.
| name | value | unitCode | unitText |
|---|---|---|---|
| MOQ | 50 | PCS | |
| Lead Time | 5–20 | business days | |
| Material | Carbon Fiber | ||
| Size | Customizable (thickness / width / length) |
Resources
The 3K Carbon Fiber Sheet enables the perfect blend of strength and lightness in a single panel. From aerospace engineering to consumer-grade innovation, it offers a one-step solution for structural upgrades across industries.
