LFT-G® PA66 HLGF50 | The Ultimate High-Heat Structural PA66
LFT-G® 50% Long glass fiber PA66 (High Performance)
In the world of thermoplastics, PA66 GF50 is often considered the limit. But for extreme under-the-hood applications or high-pressure hydraulics, standard short-fiber grades can fail due to thermal fatigue and creep. LFT-G® PA66-HLGF50 pushes the boundary further.
This High Performance (HLGF) grade combines a massive 50% Long Glass Fiber reinforcement with a high-crystallinity PA66 matrix and advanced coupling technology. The result is a composite with 10-15% higher stiffness and superior high-temperature load bearing compared to standard grades. It is the closest polymer equivalent to aluminum, designed for parts that must survive 200°C+ spikes and massive structural loads.
- √ Ultimate Stiffness (+15%): Flexural modulus exceeds 17,500 MPa, providing rigid, non-flexing performance for precision mechanical parts.
- √ High-Heat Endurance: Maintains significant strength at 180°C continuous use, outperforming PA6 grades in thermal stability.
- √ Extreme Burst Resistance: The entangled long fibers reinforce weld lines, preventing catastrophic bursting in pressure vessels and manifolds.
Typical Material Properties (High Performance)
The following values are typical data for LFT-G® PA66-HLGF50 (High Performance Grade) and are for reference only. Data is for Dry-As-Molded (DAM) state. Please contact us for the official Technical Data Sheet (TDS).
Mechanical Properties
| Property | Test Method | Value (DAM) |
|---|---|---|
| Tensile Modulus | ISO 527 | 17,500 MPa |
| Tensile Strength | ISO 527 | 270 MPa |
| Tensile Strain at Break | ISO 527 | 2.1 % |
| Flexural Modulus | ISO 178 | 15,200 MPa |
| Notched Izod Impact (23°C) | ISO 180/A | 48 kJ/m² |
| Notched Izod Impact (-30°C) | ISO 180/A | 22 kJ/m² |
Thermal & Physical Properties
| Property | Test Method | Value |
|---|---|---|
| Density | ISO 1183 | 1.56 g/cm³ |
| HDT/A (1.8 MPa) | ISO 75 | 258 °C |
| HDT/C (8.0 MPa) | ISO 75 | 235 °C |
| Melting Temperature | ISO 11357 | ~262 °C |
| Mold Shrinkage (Flow) | ISO 294-4 | 0.1 - 0.2 % |
Processing Information
The following values are recommendations. We recommend desiccant / dry air dryers (moisture content below 0.1%).
To minimize fiber breakage and ensure optimal performance, a low-compression, general-purpose screw is highly recommended.
| Parameter | Recommendation |
|---|---|
| Drying Temperature | 80 - 100 °C |
| Drying Time | 4 - 6 hours |
| Melt Temperature (Nozzle ③) | 280 - 310 °C |
| Mold Temperature (Zone ②) | 80 - 120 °C |
| Back Pressure | Low (to minimize fiber damage) |
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