For engineering challenges that demand the absolute peak of thermoplastic performance-where temperatures exceed 200°C and loads are relentless-LFT-G® PA66 CF40 (Model: BC04B) is the calculated solution. This is a high-grade Polyamide 66 composite reinforced with 40% Long Carbon Fiber, designed to replace die-cast aluminum in powertrain and heavy industrial applications.
Searching for PA66 CF40 often leads to standard Short Carbon Fiber compounds. While stiff, these materials suffer from brittleness and "creep" (deformation) under sustained high-temperature loads. LFT-G® solves this with Long Carbon Fiber (LCF) technology. By maintaining fiber lengths of 10-12 mm, we create an interlocked 3D skeletal network. This boosts the flexural modulus to over 22 GPa and dramatically extends fatigue life, ensuring your parts survive where metals are too heavy and standard plastics melt.
Why LFT-G® 40% Long Carbon Fiber?
Breaking the Cost Barrier of High-Performance Composites.
The combination of PA66 resin and 40% carbon fiber is traditionally expensive. LFT-G® disrupts this by integrating a strategic China domestic supply chain:
- Domestic T700 Equivalence: We utilize high-strength domestic carbon fiber that matches the mechanical modulus of imported fibers (Toray/Tenax) but at a 30% lower cost.
- Supply Chain Resilience: In a market prone to shortages of PA66 ADN precursors, our robust inventory strategy guarantees stable lead times for your mass production.
- Precision Pultrusion: Our specific screw and die design ensures that even at 40% high loading, every single fiber filament is fully impregnated with resin, eliminating stress risers.
Performance Highlights: The Structural Advantage
22 GPa+ Stiffness
With 40% carbon fiber loading, LFT-G® PA66 CF40 approaches the stiffness of magnesium and aluminum alloys. It resists bending under heavy loads, making it ideal for structural frames and brackets.
Zero Creep at 150°C
Unlike PA6 which softens, PA66's higher crystallinity combined with the LCF network ensures the part holds tight tolerances even after thousands of hours in hot environments.
Dynamic Fatigue Life
The long fibers bridge micro-cracks. This material can withstand millions of vibration cycles (e.g., in engines or railways) without catastrophic failure, outperforming short fiber compounds by 10x.
Technical Data Sheet (Model: LFT-G® PA66-BC04B)
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Polyamide 66 (PA66) |
| Fiber Content | ISO 1172 | % | 40% Long Carbon Fiber |
| Density | ISO 1183 | g/cm³ | 1.31 |
| Tensile Strength | ISO 527 | MPa | 270 - 280 |
| Tensile Modulus | ISO 527 | GPa | 30 - 31 |
| Notched Impact Strength (23°C) | ISO 179 | kJ/m² | 29 - 31 |
| HDT (1.80 MPa) | ISO 75 | °C | 254 |
| Surface Resistivity | IEC 60093 | Ohms | 102 - 104 |
Applications: Extreme Structural Demands
Processing Note: Handling 40% in PA66
Critical Molding Parameters:
- Melt Temp: PA66 + 40% Fiber is viscous. Use 290°C - 310°C to ensure flow.
- Mold Temp: 100°C - 120°C is mandatory. A hot mold creates a resin-rich surface and improves fiber bonding.
- Wear Protection: 40% Carbon is abrasive. Use hardened steel screws and molds to prevent premature equipment wear.
People Also Ask
Q: Is PA66 CF40 cheaper than aluminum?
A: Yes, in total system cost. While the raw material cost per kg might be higher, PA66 CF40 eliminates secondary machining, painting, and assembly steps (via part integration). It also reduces shipping weight by 50% compared to aluminum components.
Q: How does PA66 CF40 handle creep at high temperatures?
A: Exceptionally well. The 40% long fiber network restricts polymer chain movement. At 150°C under load, LFT-G® PA66 CF40 exhibits less than 0.5% creep strain over 1000 hours, making it suitable for constant-load bolt connections.
Q: Is this material suitable for EMI shielding?
A: Yes. With 40% carbon fiber loading, the material forms a highly conductive network (Volume Resistivity < 100 Ohm-cm), providing effective electromagnetic interference (EMI) shielding for automotive ECUs and industrial sensors.
Switch to Structural LFT Composites
Leverage our domestic supply chain for high-grade, cost-effective metal replacement solutions.
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