LFT-G® PP LGF50: 50% Long Glass Fiber Reinforced Polypropylene Composite
What is LFT-G® PP LGF50?
LFT-G® PP LGF50 is a high-performance thermoplastic composite consisting of a polypropylene (PP) matrix reinforced with 50% long glass fibers. The continuous fiber network forms a three-dimensional reinforcement architecture within the molded part, delivering mechanical strength and rigidity that significantly exceed those of conventional short-glass PP grades.
The polypropylene base provides inherent resistance to acids, alkalis, and moisture, while the long glass fibers deliver exceptional stiffness, creep resistance, and dimensional stability under sustained loads. This combination makes LFT-G® PP LGF50 an ideal lightweight, cost-effective replacement for metal and engineering plastics in structural, automotive, and industrial applications.
Typical applications include battery trays, seat frames, pump housings, chemical storage racks, appliance housings, and power tool casings. The material processes easily on standard injection molding equipment with excellent flowability, enabling complex geometries and thin-wall designs.
Mechanical Properties Comparison
Note: This comparative assessment is derived from standardized test data for core material properties
This bar chart compares the key mechanical properties of the three materials. As highlighted, PP LGF50 delivers superior performance in tensile and flexural strength, making it the optimal choice for applications demanding high rigidity and cost-efficiency. Its balanced profile offers a compelling alternative to both short-glass PP and engineering plastics.
Key Advantages of LFT-G® PP LGF50
Exceptional Stiffness & Load-Bearing Capacity
The 50% long glass fiber network delivers outstanding rigidity, making it a reliable choice for structural parts that must resist bending and deformation under continuous load.
Outstanding Chemical & Moisture Resistance
The polypropylene matrix resists acids, alkalis, solvents, and fuels, while near-zero water absorption keeps dimensions stable in humid or wet environments.
Lightweight & Cost-Effective Metal Replacement
Low density and a favorable raw material cost make LFT-G® PP LGF50 a smart substitute for metal and higher-priced engineering plastics in high-volume production.
Excellent Thermal Stability
Maintains mechanical performance at elevated temperatures, making it suitable for under-hood automotive components, industrial machinery, and electrical appliances.
Superior Creep & Fatigue Endurance
The continuous fiber architecture resists permanent deformation under sustained stress and cyclic loading, ensuring long service life in dynamic structural applications.
Good Flowability & Process Flexibility
Despite the high fiber loading, LFT-G® PP LGF50 flows well on standard injection molding equipment, enabling thin-wall and complex ribbed geometries with excellent surface finish.
PP LGF50 Material Overview
| Attribute | Specification |
| Base Resin | Polypropylene (PP) |
| Fiber Type | Long Glass Fiber (LGF) |
| Fiber Content | 50% |
| Color | Black / Natural |
| Processing | Injection Molding Grade |
| Key Characteristics | High Stiffness, Good Mechanical Properties |
PP LGF50 Technical Data Sheet
| Property | Test Method | Value | Unit |
|
Specific Gravity
|
ASTM D-792
|
1.32 | g/cm³ |
|
Molding Shrinkage
|
ASTM D-955
|
0.10 - 0.30 %
|
/ |
|
Tensile Strength
|
ISO：527
|
147 | MPa |
|
Tensile Modulus
|
ISO：527
|
11,914 | MPa |
|
Tensile Elongation
|
ISO：527
|
1.7-2.5 %
|
/ |
|
Flexural Strength
|
GB/T 9341
|
208 | MPa |
|
Flexural Modulus
|
GB/T 9341
|
9,215
|
MPa |
|
Notched Izod Impact
|
ISO：180
|
46 |
KJ/m2
|
|
Notched Charpy Impact
|
ISO：179
|
43 |
KJ/m2
|
|
Heat Deflection Temperature (1.8 MPa)
|
ISO 75-2
|
160 | °C |
|
Flammability
|
ASTM D-635
|
HB @ 1.5 mm | / |
Download Complete PP LGF50 Data Sheet PDF
Performance in Practice
Automotive Structural Components
PP LGF50 is widely used in automotive structural applications including battery trays, seat frames, front-end modules, and under-body shields. It replaces metal with significant weight savings while maintaining the stiffness and creep resistance required for long-term load-bearing service. The material also withstands under-hood temperatures and chemical exposure from fuels, oils, and coolants.
Industrial Fileds
In industrial equipment, PP LGF50 is specified for pump housings, valve bodies, chemical storage racks, and heavy-duty pallets. The polypropylene matrix resists acids, alkalis, and solvents, while the long glass fiber network maintains dimensional stability under sustained loads. This extends service life and reduces maintenance in aggressive environments.
Consumer & Electrical Appliances
PP LGF50 enables thin-wall appliance housings, power tool casings, washing machine components, and air conditioner parts. High flow and rigidity allow complex ribbed designs with excellent surface finish, while the material's heat resistance ensures safety and durability in electrical applications without the cost of engineering plastics.
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