LFT-G® PPS LGF50 (NG05) | The Ultra-Stiff Metal Replacement for PPS GF50
V-0 fire safety, and chemical resistance for precision parts
LFT-G® 50% Long glass fiber PPS (High Performance)
When engineers specify PPS GF50, they are looking for the absolute limit of polymer stiffness. However, standard short-fiber PPS GF50 has a fatal flaw: it is ceramic-brittle. LFT-G® PPS-LGF50 (Model: PPS-NG05) is the structural evolution that combines extreme rigidity with necessary toughness.
This High-Performance grade packs a massive 50% Long Glass Fiber reinforcement into a pure Polyphenylene Sulfide (PPS) matrix. The result is a material with a flexural modulus exceeding 20,000 MPa-rivaling magnesium and aluminum alloys. It offers inherent UL94 V-0 flame retardancy and zero water absorption, making it the ultimate choice for precision components that must maintain micron-level tolerances in hot, wet, or chemical environments.
- √ Metal-Like Stiffness: With a modulus >20 GPa, it is one of the stiffest thermoplastics available, eliminating warpage and deflection under heavy loads.
- √ Dimensional Precision: Low thermal expansion (CLTE) comparable to aluminum ensures parts hold tight tolerances from -40°C to +200°C.
- √ Chemical Inertness: Completely immune to automotive fluids, hydrolysis, and aggressive fuels that degrade Nylons or corrode metals.
Typical Material Properties (NG05)
The following values are typical data for LFT-G® PPS-LGF50 (Model: PPS-NG05) and are for reference only. Data is for Dry-As-Molded (DAM) state. Please contact us for the official Technical Data Sheet (TDS).
Mechanical & Safety
| Property | Test Method | Value |
|---|---|---|
| Flammability (0.8mm) | UL 94 | V-0 (Inherent) |
| Tensile Modulus | ISO 527 | 17,500 MPa |
| Tensile Strength | ISO 527 | 210 MPa |
| Flexural Modulus | ISO 178 | 14,500 MPa |
| Notched Izod Impact (23°C) | ISO 180/A | 48 kJ/m² |
| Water Absorption (24h) | ISO 62 | < 0.02 % |
Thermal & Physical Properties
| Property | Test Method | Value |
|---|---|---|
| Density | ISO 1183 | 1.68 g/cm³ |
| HDT/A (1.8 MPa) | ISO 75 | >265 °C |
| Linear Therm. Expansion | ISO 11359 | ~20 µm/m·K |
| Melting Temperature | ISO 11357 | ~280 °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 0.04%).
High mold temperature is critical for PPS crystallinity and surface finish.
| Parameter | Recommendation |
|---|---|
| Drying Temperature | 130 - 150 °C |
| Drying Time | 3 - 4 hours |
| Melt Temperature (Nozzle ③) | 300 - 330 °C |
| Mold Temperature (Zone ②) | 135 - 160 °C |
| Back Pressure | Low (to minimize fiber damage) |
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