• Author: LFT-G® Advanced Thermoplastics Engineering Division
• Testing Origin: LFT-G® Materials Testing Laboratory (ISO/ASTM Compliant Plant Calibration)
• Data Release Date: June 2026 | Status: Certified Technical Product Sheet
LFT-G® PA66 LCF50 High-Temperature Long Carbon Fiber Nylon 66
LFT-G® PA66 LCF50 (Model: LFT-G® PA66 LCF50-BC05A) sets a definitive performance benchmark for structural thermoplastic stiffness and thermal endurance. Manufactured using a proprietary automated continuous pultrusion method, this compound achieves a uniform wet-out of a high-temperature polyamide 66 matrix with 50% high-modulus continuous long carbon fiber strands. The resulting composite delivers an extraordinary tensile modulus exceeding 34,000 MPa, offering an ideal solution for challenging structural metal replacement applications under continuous load profiles.
Standard chopped PA66 CF50 alternatives frequently fail under dynamic multi-axial fatigue due to localized micro-cracking at short fiber boundary junctions. Conversely, our premium long carbon fiber composite matrix retains an interconnected internal 3D structural skeleton. This continuous framework evenly distributes complex load paths, ensuring exceptional fatigue resistance, lower density, and reliable dimensional accuracy in demanding industrial operating environments.
Core Product Advantages:
- ● Extreme Structural Rigidity: 34,500 MPa tensile modulus confidently replaces machined stainless steel and cast iron.
- ● Elite Thermal Threshold: 252 °C heat deflection temperature ensures structural safety during continuous high-heat exposures.
- ● Isotropic Control Matrix: Continuous interlocking fiber distribution eliminates part warping during cooling cycles.
- ● Inherent EMI Shielding: Conductive network architecture provides deep electromagnetic protection for electronics enclosures.
Typical Material Properties (LFT-G® PA66 LCF50-BC05A)
The properties detailed below represent typical parameters recorded inside the LFT-G® Polymer Characterization Facility under Dry-As-Molded (DAM) conditions. Testing complies with specific ISO and ASTM standards to ensure strict laboratory data validation.
Mechanical Testing Profile
| Property | Test Standard | Value (DAM State) |
|---|---|---|
| Tensile Modulus | ISO 527 | 34,500 MPa |
| Tensile Strength | ISO 527 | ~305 MPa |
| Flexural Modulus | ISO 178 | 24,000 MPa |
| Flexural Strength | ISO 178 | 405 MPa |
| Notched Izod Impact (23°C) | ISO 180/A | 32 kJ/m² |
Thermal & Physical Analysis
| Property | Test Standard | Value |
|---|---|---|
| Density | ISO 1183 | 1.33 g/cm³ |
| HDT (0.45 MPa) | ISO 75 | 256 °C |
| HDT (1.80 MPa) | ISO 75 | 252 °C |
| Mold Shrinkage | ISO 294-4 | 0.03 - 0.10 % |
Processing Parameters & Recommendations
Standard molding guidelines for processing LFT-G® PA66 LCF50. To shield the highly dense 50% carbon fiber nylon core skeleton from unnecessary fiber fracture, implement a low-compression screw profile, keep back pressure beneath 50 psi, and optimize gating channels.
| Parameter | Recommendation |
|---|---|
| Drying Temperature | 90 - 110 °C |
| Drying Time | 4 - 6 hours (Desiccant air dryer required) |
| Rear / Feed Zone (Zone ①) | 265 - 300 °C |
| Center / Melt Zone (Zone ②) | 275 - 305 °C |
| Front / Nozzle Temp (Zone ③) | 270 - 300 °C |
| Mold Temperature | 80 - 115 °C |
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