LFT-G® Long Carbon Fiber Reinforced PA66 for Automotive Radiator End Tanks
Withstanding the Heat and Pressure: PA66 LCF40 for Radiator End Tanks
Automotive radiator end tanks are vital components in the engine cooling system, constantly exposed to hot pressurized coolant, significant thermal cycling, and vibrations within the engine compartment. They require materials capable of maintaining structural integrity and leak-free sealing under these harsh conditions over the vehicle's lifespan. LFT-G® PA66 LCF40, a high-performance Polyamide 66 composite reinforced with 40% continuous long carbon fibers, offers a superior solution for radiator end tanks. This advanced material, sometimes referenced in the industry using terms like **CF40 nylon66 long carbon polymer**, is specifically engineered to excel in high-temperature, high-pressure coolant environments. By leveraging the exceptional properties of long carbon fibers within a robust PA66 matrix, LFT-G® PA66 LCF40 delivers outstanding resistance to hot coolant degradation, superior creep resistance to withstand sustained pressure at elevated temperatures, and very high strength and stiffness. This ensures the end tank maintains its shape, prevents leaks, and reliably connects to the radiator core and cooling hoses. Furthermore, PA66 LCF40 contributes to significant vehicle light weighting compared to metal end tanks or even traditional glass fiber reinforced solutions, aiding in fuel efficiency and performance. Its excellent dimensional stability and fatigue resistance are critical for durability under thermal and mechanical cycling. The moldability of this material also allows for optimized designs with integrated features, potentially simplifying assembly processes.
Key Advantages of LFT-G® PA66 LCF40 for Radiator End Tank Applications
- Exceptional Hot Coolant Resistance: Engineered for long-term durability and integrity when exposed to hot, pressurized coolant mixtures.
- Superior Creep Resistance: Maintains dimensional stability under sustained internal pressure at elevated engine temperatures, preventing leaks.
- Very High Strength and Stiffness: Provides the robust structural performance needed to withstand internal pressure and external loads in the cooling system.
- Excellent High-Temperature Performance: Maintains key mechanical properties even under the demanding thermal conditions of the engine compartment.
- High Fatigue Resistance: Endures repeated thermal and pressure cycles and engine vibrations, ensuring long-term reliability.
- Significant Lightweighting: Offers substantial mass savings compared to traditional metal or even glass-filled plastic end tanks.
- Design Flexibility and Integration: Excellent moldability allows for complex geometries that optimize flow paths and integrate mounting features.
By specifying LFT-G® PA66 LCF40 for your automotive radiator end tanks, you are choosing an advanced composite engineered for the highest levels of performance and reliability in challenging cooling system environments. Our specialized LFT PA66 grades, reinforced with long carbon fibers, empower automotive engineers to design lighter, more durable, and higher-performing cooling systems. Explore the possibilities and partner with us to innovate the future of automotive thermal management.
For more technical data on PA66 LCF40 for radiator end tanks, please refer to the specification below, or
LFT-G® PA66 LCF40 Technical Data Sheet for Automotive Radiator End Tanks
This document provides technical data for a 40% Long Carbon Fiber reinforced Polyamide 66 (LFT-G® PA66 LCF40) material, specifically engineered for the extreme performance requirements of automotive radiator end tanks. This advanced composite offers a superior combination of very high strength, thermal performance, creep resistance, and chemical resistance crucial for components operating under high heat, internal pressure, and exposure to hot coolant. The data presented here is based on typical values obtained from international material suppliers and standards for LCF40 PA66, tailored to this demanding application. Please refer to the specific datasheet of your program for precise LFT material values.
Mechanical Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Tensile Strength | 260-320 | MPa | ISO 527-1 |
| Tensile Modulus | 30,000-31,000 | MPa | ISO 527-1 |
| Elongation at Break | 1.5-2.5 | % | ISO 527-1 |
| Flexural Strength | 370-420 | MPa | ISO 178 |
| Flexural Modulus | 21000-22000 | MPa | ISO 178 |
| Notched Izod Impact Strength (+23°C) | 27-57 | kJ/m² | ISO 180/1A |
| Notched Izod Impact Strength (-30°C) | 26-55 | kJ/m² | ISO 180/1A |
| Fatigue Strength (at 106 cycles) | 80-120 | MPa | Based on Internal Testing |
Thermal Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Melting Temperature | 260-295 | °C | ISO 11357 |
|
Heat Deflection Temperature (HDT/A, 1.8 MPa) |
>250 | °C | ISO 75-1 |
| Coefficient of Linear Thermal Expansion | 1-3 | x 10-5/K | ISO 11359 |
Other Properties
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Density | 1.31-1.35 | g/cm³ | ISO 1183 |
| Flammability (UL 94) | V-0 | - | UL 94 |
| Moisture Absorption (24 hours) | 0.5-0.8 | % | ISO 62 |
| Shrinkage Rate (Mold Shrinkage) | 0.1-0.5 | % | ASTM D-955 |
| Creep Resistance (at specific temp/load) | Excellent | - | ISO 899 |
| Electrical Conductivity | Conductive | - | Typical |
| UV Resistance (Weathering) | Good (with appropriate stabilizers) | - | ISO 4892 |
Chemical Resistance (Typical)
LFT-G® PA66 LCF40 exhibits excellent resistance to the following substances relevant to automotive radiator end tank environments:
- Hot Coolant (Water/Glycol mixtures) - Excellent
- Engine Oils and Greases - Excellent
- Fuels (limited contact) - Good
- Road Salts - Good
- Water and Humidity - Good (Note: PA66 absorbs moisture, affecting properties; consider moisture conditioning for critical applications)
Processing Information (Typical)
Recommended processing conditions for LFT-G® PA66 LCF40 for injection molding of automotive radiator end tanks:
- Melt Temperature: 260-297 °C
- Mold Temperature: 90-110 °C
- Injection Speed: Medium (optimized for fiber length retention and filling pressure-bearing parts)
- Holding Pressure: High, optimized to minimize warpage and ensure structural integrity, dimensional accuracy, and pressure containment under thermal cycling
- Drying: **Essential** before processing (typically 100-120 °C for 4-8 hours) to prevent hydrolytic degradation and ensure optimal mechanical properties.
Notes and Supplementary Information:
Data Source: This data is compiled based on typical values for PA66 LCF40 from international material manufacturers and standards. Creep resistance, fatigue, and high-temperature chemical resistance to hot coolant are key characteristics. **LFT-G® PA66 LCF40 is specifically engineered to withstand the demanding environment of automotive radiator end tanks, providing exceptional resistance to hot pressurized coolant, superior creep and fatigue resistance, and high strength and stiffness. These properties, combined with significant lightweighting potential and dimensional stability under thermal cycling, make it an ideal material for durable and reliable cooling system components. Proper drying before processing is paramount, and the effects of moisture absorption on properties should be considered.** The electrical conductivity of carbon fiber reinforcement should also be considered in design. Please consult specific automotive industry standards and regulations relevant to cooling systems. For precise and specific data for your program, including long-term performance under specific service conditions, please consult the datasheet provided by your material supplier.
Download Complete LFT PA66 LCF40 Data Sheet PDF
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