40% Long Glass Fiber Reinforced Nylon 66 Material
What is PA66 GF40?
PA66 GF40 is a high-performance thermoplastic composite made from a Polyamide 66 (Nylon 66) matrix reinforced with a 40% loading of glass fibers. Our LFT-G® grade elevates this by using long glass fibers, creating an internal structural skeleton that delivers exceptional strength, stiffness, and high-temperature performance far exceeding standard short-fiber versions.
This is the engineer's choice for peak performance, offering the optimal balance of the extreme thermal resistance of PA66 with the powerful mechanical reinforcement of 40% long glass fiber. It is engineered to thrive where other materials would fail under combined thermal and mechanical stress.
Benefit-Driven Performance Comparison
Q: Benefit 1: Extreme Strength & Stiffness
A: For load-bearing structural parts, LFT-G® PA66 GF40 provides metal-like strength and rigidity, enabling significant weight reduction without compromising mechanical integrity.
Tensile Strength
Directly comparable to many aluminum alloys, allowing for true metal replacement in demanding structural applications.
Q: Benefit 2: High-Temperature Dominance
A: Its superior PA66 matrix allows parts to maintain their strength and shape at continuous-use temperatures where other materials (like PA6 or PP) would soften and fail.
Heat Deflection Temperature
Ensures reliability and safety for under-the-hood automotive parts, industrial machinery, and electronic components exposed to heat.
Q: Benefit 3: Long-Term Reliability
A: The combination of the stable PA66 polymer and the interlocking long fiber network provides exceptional resistance to creep and fatigue, ensuring parts perform reliably over their entire service life.
Tensile Modulus (Stiffness)
Maintains dimensional accuracy and resists deformation under constant load, critical for precision components and assemblies.
Technical Specifications
Data for LFT-G® PA66 GF40. As a hygroscopic material, properties are provided for both Dry-As-Molded (DAM) and conditioned (50% RH) states.
| Property | Test Method | Metric (DAM) | Metric (COND) |
|---|---|---|---|
| Density | ISO 1183 | 1.46 g/cm³ | 1.46 g/cm³ |
| Tensile Modulus | ISO 527 | 13,500 MPa | 9,500 MPa |
| Tensile Strength | ISO 527 | 215 MPa | 150 MPa |
| Notched Izod Impact (23°C) | ISO 180 | 37 kJ/m² | 60 kJ/m² |
| Heat Deflection Temp (1.8 MPa) | ISO 75 | 254 °C | - |
Download Complete LFT PA66 GF40 Data Sheet PDF
Applications at the Peak of Performance
Automotive Structural & EV
Suspension components, cross-car beams, electric motor housings, and battery pack frames.
High-Performance Industrial
Heavy-duty power tool housings, high-load bearing cages, and components cycling between hot and cold.
Aerospace & Defense
Interior structural brackets, UAV chassis components, and equipment that must perform reliably in extreme conditions.
Frequently Asked Questions
Q: What is the "sweet spot" for LFT PA66 GF40?
A: LFT PA66 GF40 hits the "sweet spot" for applications that require a powerful combination of high stiffness, high strength, AND excellent heat resistance. It's the ideal choice when LFT PA6's thermal performance is insufficient, but the extreme stiffness of a 50% or 60% LGF grade is not required, making it one of the most versatile high-performance composites.
Q: How does LFT-G® PA66 GF40 compare to die-cast aluminum?
A: It offers a comparable stiffness-to-weight ratio to many aluminum alloys while providing significant advantages: up to 50% weight reduction, superior vibration damping (NVH), corrosion immunity, and the ability to form complex net-shape parts without secondary machining. This results in a lower total system cost for many applications.
Engineer the Future with Peak Performance
When your design demands an optimal balance of thermal and mechanical superiority, LFT-G® PA66 GF40 is the answer. Contact our engineering team to get the data and support you need to push the boundaries of performance.
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