LFT-G® PA66 LGF40-TA | The Toughened, High-Impact Upgrade for PA66 GF40
LFT-G® 40% Long glass fiber PA66 (Toughened)
Standard PA66 GF40 is famous for its high heat resistance and stiffness, but it has a major weakness: it is brittle. In applications involving impact, vibration, or cold temperatures, standard grades can shatter unexpectedly. LFT-G® PA66-LGF40TA (Toughened Grade) solves this critical failure mode.
This material combines a heat-resistant Polyamide 66 matrix with a 40% Long Glass Fiber skeleton and a specialized elastomer toughening system. The result is a composite that retains the high thermal stability of PA66 (up to 250°C short term) while offering drastically improved impact resistance and ductility. It transforms "brittle failure" into "tough yielding," making it ideal for rugged industrial and automotive parts.
- √ High Impact Strength: The toughened matrix absorbs shock energy, preventing cracks from propagating during drops or collisions, even at -30°C.
- √ Notch Insensitivity: Significantly reduces the risk of failure at sharp corners, bolt holes, or ribs where stress concentrations usually crack standard PA66 GF40.
- √ Thermal Durability: Unlike PA6 toughened grades, the PA66 base allows this material to perform in higher temperature environments (engine bays) without losing its toughness.
Typical Material Properties (Toughened)
The following values are typical data for LFT-G® PA66-LGF40TA (Toughened 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 | 12,600 MPa |
| Tensile Strength | ISO 527 | 182 MPa |
| Tensile Strain at Break | ISO 527 | 3.5 % |
| Flexural Modulus | ISO 178 | 10500 MPa |
| Notched Izod Impact (23°C) | ISO 180/A | 47 kJ/m² |
| Notched Izod Impact (-30°C) | ISO 180/A | 40 kJ/m² |
Thermal & Physical Properties
| Property | Test Method | Value |
|---|---|---|
| Density | ISO 1183 | 1.46 g/cm³ |
| HDT/A (1.8 MPa) | ISO 75 | 245 °C |
| HDT/C (8.0 MPa) | ISO 75 | 205 °C |
| Melting Temperature | ISO 11357 | ~262 °C |
| Mold Shrinkage (Flow) | ISO 294-4 | 0.3 - 0.5 % |
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) | 270 - 300 °C |
| Mold Temperature (Zone ②) | 70 - 110 °C |
| Back Pressure | Low (to minimize fiber damage) |
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