LFT-G® PBT LGF50 Product Overview
LFT-G® PBT LGF50 – Long Glass Fiber Reinforced PBT
LFT-G® PBT LGF50 is a high-performance, long glass fiber reinforced polybutylene terephthalate compound designed for injection molding. It delivers excellent electrical insulation, low moisture absorption, outstanding chemical resistance, and superior dimensional stability - the ideal solution for automotive electronics, industrial components, and metal replacement applications.
Performance Profile
PBT LGF50 – Advantage Weight Distribution
| Long Fiber Strength (35%) | Dimensional Stability (25%) | ||
| Chemical Resistant (25%) | Low Moisture + Wear (15%) | ||
Based on LFT-G® PBT LGF50 typical performance for metal replacement
PBT LGF50 delivers a well‑rounded performance profile for metal replacement.
The largest share comes from long fiber reinforcement, providing the structural strength needed to replace metal. Dimensional stability and the chemical/insulation balance each play a major role, while low moisture uptake and wear resistance complete the package - ensuring reliable operation across automotive, industrial, and electronic applications.
- Long fiber skeleton – high load‑bearing capacity and impact resistance
- Dimensional stability – low warpage for precision components
- Chemical + insulation balance – resists oils, fuels, and high‑voltage environments
- Moisture resistance & wear performance – consistent properties in humid or friction conditions
LFT-G® Superior Injection Molding Process
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LFT-G® injection molding is engineered from the ground up for long-fiber-reinforced thermoplastics (LFT), with purpose-built screw and barrel configurations. Our low-shear, gentle-conveying screw profile minimizes fiber breakage during melting, preserving the intact, continuous fiber network from our pultruded pellets through to the finished part. This standardized production platform delivers highly consistent performance across all our production facilities worldwide, with negligible batch-to-batch variation.
Low-shear melting not only protects critical fiber length but also ensures uniform fiber dispersion even in parts with complex geometries. Combined with precise melt temperature control and optimized backpressure, it maintains the material's internal three-dimensional fiber skeleton-the very foundation of our industry-leading high impact strength. Our modular screw design flexibly adapts to different material viscosities and part requirements, from precision thin-walled housings to heavy-duty metal replacement components. |
LFT-G® PBT LGF50 Typical Applications
Household Appliance Motor End Caps & Insulation Supports
Used in fan motors, compressor motors and small power motors for home appliances. PBT LGF50 delivers high structural rigidity and stable dimensions to maintain concentricity under high-speed rotation, while its outstanding electrical insulation and low moisture absorption provide long-term safety in humid household environments. It also withstands heat aging and frequent temperature changes, effectively replacing metal and traditional reinforced plastics for lighter, quieter and more durable motor components.
Water Treatment Equipment Valve & Pump Internal Components
Suitable for valve cores, sealing seats and support parts in water purification, fluid control and water circulation systems. The material offers excellent hydrolysis resistance and dimensional stability, ensuring tight sealing and stable operation even in long-term contact with running water and chemical treatment agents. Low water absorption avoids part swelling or performance decay, and high mechanical strength resists water pressure and flow impact, extending service life in continuous working conditions.
Outdoor Telecom Equipment Wiring Box Housings
Applied to protective housings and internal structural supports for communication terminals, signal distributors and outdoor wiring boxes. PBT LGF50 combines reliable electrical insulation, weather resistance and low warpage, adapting to outdoor temperature differences, wind and rain erosion and humid climates. Its long-fiber reinforced strength prevents cracking during installation and outdoor use, and chemical resistance resists urban pollutants, ensuring stable signal transmission and long service life of communication parts.
FAQ
Q: Is PBT LGF50 flame-retardant on its own?
A: Not inherently. Unlike PPS, standard PBT LGF50 is not self-extinguishing. But it can be formulated with FR additives to meet V0 ratings. The long glass fiber actually helps maintain mechanical strength even after adding flame retardants - something short-fiber PBT GF30 struggles with.
Q: How is PBT LGF50 different from regular PBT GF30?
A: The difference is fiber length. GF30 fibers shorten to 0.2–0.5mm in the molded part, leading to warpage and crack risk. LGF50 maintains 1–3mm fibers, creating a reinforcing skeleton. That means higher impact, lower warpage, and improved creep resistance - without sacrificing chemical resistance.
Q: Can PBT LGF50 be recycled?
A: Yes, it's thermoplastic. Regrind can be reused, typically up to 20–30% without major property loss. The long fibers do get shortened during re‑processing, so recycled material won't match virgin performance. But it's still recyclable, unlike thermosets or many metal‑plastic hybrids.
 More Than Materials – Your Partner in Advanced ManufacturingTransform your designs with our next‑generation long‑glass‑fiber composites. Collaborate for uncompromised performance. |
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