LFT-G® PP GF50 (LGF50) – High Modulus Homopolymer
LFT-G® PP GF50 (Model: LFT-G®PP-GF50-NG05) is a heavy-duty structural composite engineered to push the boundaries of thermoplastic performance. It features a highly crystalline Homopolymer Polypropylene matrix densely reinforced with 50% continuous fiberglass, designed exclusively to replace die-cast aluminum and zinc in demanding industrial environments.
Standard glass fiber pp materials typically rely on chopped fibers which offer limited stress transfer. Our advanced pultrusion process ensures the long glass fiber (10-12mm) is thoroughly impregnated and preserved within the pellet. During injection molding, these extended fibers intertwine to create a virtually unbreakable 3D internal skeleton.
This extremely high 50% fiber loading delivers an outstanding flexural modulus exceeding 11,000 MPa. It provides ultimate dimensional stability, high heat endurance, and exceptional fatigue resistance, making it the definitive metal replacement solution for modern structural engineering.
Why Choose Long Fiber Homopolymer PP GF50?
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● Extreme Structural Rigidity:
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The 50% fiberglass content mechanically locks the Homopolymer matrix. It prevents part deflection even when subjected to massive mechanical stress, mimicking the stiffness of light metals.
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● Unmatched Fatigue Endurance:
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Short fibers debond and crack under repetitive motion. The continuous long fiber network acts as an internal energy dissipator, allowing components to survive millions of high-frequency vibration cycles.
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● Near-Zero Creep Deformation:
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Plastics naturally distort under constant load. Our dense 3D fiber skeleton drastically reduces thermal expansion and long-term creep, ensuring absolute lifetime dimensional accuracy.
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● Immunity to Hydrolysis:
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Unlike Nylon (PA66 GF50) which absorbs moisture and loses strength, this PP composite is completely impervious to water, detergents, and alkaline solutions, saving costs and improving reliability.
Technical Data Sheet: LFT-G® PP-GF50-NG05
| Property | Test Standard | Unit | Typical Value |
|---|---|---|---|
| Base Resin | - | - | Homo-Polypropylene |
| Fiber Content | ISO 1172 | % | 50% Long Fiber |
| Density | ISO 1183 | g/cm³ | 1.33 - 1.35 |
| Tensile Strength | ISO 527 | MPa | 135 - 145 |
| Flexural Modulus | ISO 178 | MPa | 11,000 - 12,000 |
| Notched Impact Strength | ISO 179 | kJ/m² | 45 - 48 |
| HDT (1.80 MPa) | ISO 75 | °C | 160 |
Industry Applications: Metal Replacement
Home Appliances
Extensively validated for washing machine plastic part manufacturing, including bearing spiders and inner tubs. The 50% continuous fiber matrix effortlessly supports heavy, wet laundry loads. Its chemical immunity to harsh detergents and unparalleled fatigue resistance during intense 1400 RPM spin cycles make it superior to heavy die-cast metal brackets.
Automotive Structural Frames
A prime candidate for vehicle lightweighting. Used in front-end modules, seat carriers, and battery trays. Replacing steel or aluminum with our 11 GPa high-modulus material allows automakers to achieve up to 40% weight reduction, lowering fuel consumption while strictly passing crash-test safety protocols.
Industrial Pumps & Valves
Perfect for heavy-duty fluid handling systems. It completely eliminates the rust and corrosion problems associated with metal housings. Furthermore, the immense stiffness prevents the part from bowing or leaking under high-pressure liquid surges (water hammer effect).
Frequently Asked Questions (FAQ)
Q: How does PP GF50 compare to PA66 GF50 in metal replacement?
A: The critical difference is moisture absorption. Nylon (PA66) absorbs water, severely lowering its strength and altering dimensions over time. Our high modulus glass fibre PP absorbs zero moisture, ensuring consistent structural rigidity in wet environments. It is also significantly lighter and more cost-effective.
Q: Is LGF50 difficult to injection mold compared to short GF50?
A: Standard molding machines can process LGF50, but adjustments are needed to protect fiber length. We recommend using larger gate sizes, low back-pressure, and low-compression screws. This preserves the long glass fibre skeleton, which is entirely responsible for the extreme stiffness and fatigue resistance of the final part.
Q: Can it truly replace die-cast aluminium?
A: Yes. With a flexural modulus exceeding 11,000 MPa, it matches the functional rigidity needed for most brackets and structural frames. By switching to LFT-G® PP-GF50-NG05, manufacturers eliminate costly secondary machining, painting, and anti-corrosion treatments, while instantly cutting product weight by half.
Looking to Replace Heavy Metal Components?
Cut weight and reduce costs. Contact the LFT-G® engineering team for material selection and mold flow analysis.
Request LGF50 Quote
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