LFT-G® PA6 CF40 (BC04B)
LFT-G® PA6 CF40 is an advanced engineering thermoplastic composite that Polyamide6 reinforced with 40% long carbon fiber by weight. Engineered for the most demanding structural applications, this high-stiffness material bridges the critical performance gap between standard short-fiber plastics and heavy die-cast metals. By utilizing a pultrusion process that maintains fiber length parallel to the polymer matrix, our PA6 CF40 creates a highly intertwined internal skeletal network within the molded part. This unique structural architecture delivers unparalleled mechanical properties, including supreme tensile strength, outstanding dimensional stability, and exceptional resistance to thermal deformation. It is the ultimate solution for engineers seeking aggressive weight reduction without compromising load-bearing capabilities.
Key Performance Features
- Exceptional specific strength
- Ultra-low shrinkage & warpage
- High continuous use temperature
- Excellent electromagnetic shielding
- Superior creep behavior under load
- Premium surface finish capability
Material Specifications
Typical Mechanical Properties: LFT-G® PA6 CF40
| Property | Standard | Typical Value | Unit |
| Tensile Strength | ISO 527 | 265 | Mpa |
| Tensile Modulus | ISO 527 | 30695 | Mpa |
| Flexural Strength | ISO 178 | 380 | MPa |
| Flexural Modulus | ISO 178 | 22000 | MPa |
| Notched Impact Strength | ISO 180 | 29 | kJ/m² |
Processing Guidelines:LFT-PA6 CF40 Long Carbon Fiber
Successful injection molding of long carbon fiber reinforced polyamides requires strict adherence to processing protocols to prevent excessive fiber shear. Maintaining fiber length in the final molded component is critical to achieving the published mechanical data. We highly recommend utilizing low-shear screw configurations and optimizing gate sizes to facilitate smooth melt flow. Thorough drying is absolutely mandatory, as moisture content exceeding 0.1% will lead to severe material degradation, surface defects, and catastrophic loss of mechanical integrity during processing.
| Parameter | Recommended Range | Engineering Notes |
| Drying Temperature | 90 – 110 °C | Use desiccant air dryer; target moisture < 0.1% |
| Drying Time | 2 – 4 hours | Essential for preventing hydrolytic degradation |
| Melt Temperature | 240 – 270 °C | Monitor closely to avoid thermal breakdown of PA6 matrix |
| Mold Temperature | 55 – 96 °C | Higher temps yield superior crystalline structure and surface gloss |
| Injection Speed | Slow to Moderate | Reduces shear stress and preserves carbon fiber length |
Critical Tooling Advice: Utilize hardened steel molds (HRC 55+) to counteract the highly abrasive nature of the 40% carbon fiber loading during high-volume production runs.
Advanced Applications of PA6 CF40
Unmanned Aerial Vehicles (UAV) & Aerospace
In the aerospace sector, every gram matters. LFT-G® PA6 CF40 is the material of choice for drone chassis, propeller hubs, and internal structural brackets. The continuous carbon fiber skeleton provides immense rigidity to withstand aggressive flight dynamics and vibration, while shedding significant weight compared to machined aluminum alloys, thereby maximizing battery life and payload capacity.
Electric Vehicle (EV) Powertrain & Battery Enclosures
Automotive engineers utilize this 40% carbon fiber composite to replace heavy metal battery trays and motor mounts in modern EVs. Not only does it offer structural integrity comparable to steel under crash-test conditions, but it also inherently provides crucial electromagnetic interference (EMI) shielding capabilities, protecting sensitive electronic management systems from signal disruption.
Heavy-Duty Industrial Gearing & Robotics
For industrial machinery subjected to constant rotational stress, our PA6 CF40 compound is molded into high-torque gears, bearing housings, and robotic actuators. The self-lubricating properties of carbon combined with the rugged nylon matrix result in components that resist abrasive wear and thermal expansion, ensuring long-term operational precision in automated assembly lines without continuous maintenance.
Frequently Asked Questions (FAQ)
Q: What is the difference in tensile strength between short and long carbon fiber PA6 CF40?
A: While both materials contain 40% carbon fiber by weight, long carbon fiber (LFT) composites exhibit a tensile strength that is typically 20% to 30% higher than traditional short fiber compounds. More importantly, the impact resistance of LCF40 can be up to three times greater because the longer fibers act as an interconnected skeleton that effectively dissipates sudden impact energy rather than fracturing.
Q: Is PA6 CF40 suitable for direct metal replacement in structural engineering?
A: Absolutely. LFT-G® PA6 CF40 is engineered specifically for metal replacement programs. It boasts a tensile modulus that approaches certain zinc and magnesium alloys while offering a weight reduction of approximately 40% to 50%. It allows engineers to consolidate complex multi-part metal assemblies into a single, high-strength injection-molded component, drastically reducing manufacturing and assembly costs.
Q: How does moisture absorption affect the mechanical properties of carbon-filled Nylon 6?
A: Like all polyamides, PA6 will absorb ambient moisture, which typically acts as a plasticizer. However, the extremely dense 40% carbon fiber loading significantly restricts the polymer's ability to swell, thereby minimizing dimensional changes. While there is a slight drop in absolute rigidity when fully conditioned, the material actually gains a slight increase in impact toughness, making it highly stable across diverse environmental conditions.
Co-Engineer Your Next Breakthrough with LFT-G®Stop compromising between weight and strength. Our advanced composite engineering team is ready to assist you with material selection, flow analysis, and application validation for your PA6 CF40 projects. Partner with a manufacturer that understands structural integrity at the molecular level. |
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