What is PP GF40: long Glass fiber PP Composite.
PP GF40 is a designation for a polypropylene (PP) composite material that has been reinforced with 40% Glass Fibers (GF) by weight. The addition of this high loading of glass fibers transforms the versatile polypropylene base resin into a robust engineering thermoplastic with significantly enhanced strength, stiffness, and thermal performance. However, a critical distinction lies in the length of these fibers. LFT-G® PP GF40 represents an advanced grade of this material, utilizing Long Glass Fiber Technology (LFT). Unlike conventional short glass fiber (SGF) reinforced PP, the long fibers in LFT-G® PP GF40 form an internal, interlocking skeletal network. This structure is key to delivering vastly superior impact resistance, creep endurance, and overall structural integrity, making it an ideal choice for high-performance, lightweight components.
LFT-G® PP-GF40 Datasheet long fiber PP
Mechanical PropertiesProperty |
Typical Value |
Unit |
Test Standard |
|---|---|---|---|
| Tensile Strength | 140 - 150 | MPa | ISO 527-1/-2 |
| Tensile Modulus | 9000 - 9,500 | MPa | ISO 527-1/-2 |
| Elongation at Break | 1.5 - 2.5 | % | ISO 527-1/-2 |
| Flexural Strength | 185 - 189 | MPa | ISO 178 |
| Flexural Modulus | 6,800 - 8,300 | MPa | ISO 178 |
| Notched Izod Impact Strength (23°C) | 45 - 60 | kJ/m² |
ISO 180/1A
|
Other Properties
| Property | Typical Value | Unit | Test Standard |
|---|---|---|---|
|
Density
|
1.20 - 1.22 |
g/cm³
|
ISO 1183
|
|
Molding Shrinkage (Flow)
|
0.1 - 0.3 | % |
ISO 294-4 |
|
Deflection Temperature (1.8 MPa) |
155 - 160 | °C |
ISO 75-2/A
|
| Melting Temperature (DSC) | 160 - 170 | °C | ISO 11357-3 |
Download Complete PP GF40 Data Sheet PDF
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Core Advantages of PP GF40
LFT-G® PP GF40 is engineered as a transformative material solution. The key to its superior performance lies in the 40% long glass fibers that form an interconnected, skeletal network within the polypropylene matrix. This structure is fundamentally better at dissipating energy and distributing stress compared to the random dispersion of short fibers. For your applications, this unlocks the following core advantages:
- Superior Impact Resistance & Toughness
- High Strength & Stiffness for Structural Applications
- Excellent Strength-to-Weight Ratio for Lightweighting
- Enhanced Creep & Fatigue Endurance under Load
- Outstanding Dimensional Stability & Low Warpage
- Improved Performance at Elevated Temperatures

What is PP glass filled used for?
The robust property profile of LFT-G® PP GF40 makes it a versatile problem-solver across numerous industries, bridging the gap between commodity plastics and higher-cost engineering polymers or metals.
Automotive Part
In the automotive world, where every gram and every performance metric counts, LFT-G® PP GF40 is a key enabler for innovation. It is specified for large structural components where high stiffness and impact strength are essential. Common applications include: front-end carriers, instrument panel structures, door modules, under-hood components like fan shrouds and battery trays for EVs, and robust tailgate inner structures. It effectively replaces metal to reduce vehicle weight and system costs, while providing the necessary strength for safety and long-term durability against automotive fluids and environmental stress.


Industrial Fan & Tool Part
For industrial machinery and tools, durability and reliability are paramount. LFT-G® PP GF40 is used for robust pump housings, valve bodies, conveyor system components, and heavy-duty power tool casings. Its excellent chemical resistance, high stiffness, and ability to withstand repeated impacts make it a more durable and often more cost-effective choice than die-cast aluminum or other thermoplastics, leading to longer service life and lower maintenance costs in demanding industrial environments.
Appliances & Sport Part
From washing machine components like drum supports and balance rings that require excellent resistance to water and chemicals, to frames for high-end office chairs and structural elements in sporting goods where high strength and fatigue resistance are needed, LFT-G® PP GF40 provides premium performance and long-lasting durability. Its ability to be molded into complex shapes allows for innovative designs that are both aesthetically pleasing and functionally robust, enhancing the overall consumer experience and product reliability.

LFT-G®PP GF40 VS. Other Materials
Choosing the right material involves comparing trade-offs in performance and cost.
| Property |
LFT-G® PP GF40(PP LGF40) |
PP SGF40 | PA6-GF30 | Die-Cast Aluminum |
|---|---|---|---|---|
| Density (g/cm³) | 1.20- 1.22 | 1.15 - 1.20 | 1.35 - 1.38 | ~2.70 |
| Tensile Strength (MPa) | 140-158 | 80 - 100 | 160 - 180 | 240 - 300 |
| Impact Strength (Notched Izod, kJ/m²) | 45 - 60 | 10 - 18 | 25 - 35 | N/A (Ductile) |
| Moisture Absorption | Very Low | Very Low | High | N/A (Corrodes) |
| Relative Cost | $$ | $ | $$$ | $$$$ |
| Flexural Modulus (MPa) | 6,600 - 7,500 | 6,000 - 7,500 | 5,500 - 6,500 | ~69,000 |
- vs. PP SGF40 (Short Fiber): LFT-G® PP GF40 offers vastly superior impact strength (often 3-5x higher), better creep resistance, and higher stiffness, especially at elevated temperatures. It is the definitive choice for structural and semi-structural applications where durability is key.
- vs. PA6-GF30 (Nylon): While PA6-GF30 may offer higher ambient temperature stiffness, it is hygroscopic-it absorbs moisture, which significantly affects its mechanical properties and dimensional stability. LFT-G® PP GF40 is virtually unaffected by moisture, making it more reliable and predictable in humid or wet environments.
- vs. Die-Cast Aluminum: LFT-G® PP GF40 provides dramatic weight savings (often over 50%), greater design freedom for consolidating parts into complex geometries, inherent corrosion resistance, and frequently lower total system cost by eliminating secondary finishing operations.
Frequently Asked Questions (FAQ)
Q: What are of PP GF40 Ford parts?
A: While specific material choices are proprietary to manufacturers like Ford, LFT-G® PP GF40 is an ideal material for a wide range of automotive parts that require high strength and low weight. Common applications across the industry include front-end carriers, instrument panel structures, door modules, battery trays, and large structural components where metal replacement is desired.
Q: What's type PP GF40?
A: LFT-G® PP GF40 is a type of thermoplastic composite known as Long Glass Fiber Reinforced Polypropylene. It belongs to the broader category of glass-filled polypropylene but is distinguished by its use of long reinforcing fibers, which provides superior mechanical properties, particularly impact strength and stiffness, compared to common short-fiber grades.
Q: How about your delivery time?
A: Our standard delivery times for LFT-G® PP GF40 and other grades vary based on order volume and current stock levels. We are committed to working closely with our clients to meet their production timelines. For a precise delivery schedule and quotation, please contact our sales team directly with your specific requirements.
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