LFT PP LGF60: Redefining the Limits of Structural Plastics
WHAT IS PP LGF60
For those seeking the absolute peak performance of a "PP GF60," LFT-G® PP LGF60-NG06H is the answer. It is the pinnacle of long-fiber technology: a 60% long glass fiber reinforced composite in a rigid homo polymer polypropylene matrix.
WHY IT'S SUPERIOR
This extreme fiber loading creates an incredibly dense, continuous fiber skeleton. The result is a flexural modulus that surpasses conventional composites and directly competes with die-cast metals like aluminum and zinc, offering unprecedented stiffness-to-weight.
WHERE IT EXCELS
It is engineered exclusively for true structural metal replacement where deflection is not an option. Ideal for large, heavy load-bearing parts like automotive sub-frames, industrial machine bases, and large appliance chassis.
This is not just a stronger plastic; it is a lightweight, cost-effective alternative to metal castings for the most demanding structural challenges.
Climbing the Metal Replacement Pyramid
LFT-G® PP LGF60 sits at the apex of the polypropylene performance pyramid, occupying a space once reserved exclusively for metals.
(Metal Replacement)
Technical Data Sheet: LFT-G® PP LGF60-NG06H
Typical values for our ultimate stiffness homopolymer grade. Data is for reference only.
| Property | Test Method | Units | Typical Value |
|---|---|---|---|
| Long Glass Fiber Content | ASTM D5630 | % by weight | 60 |
| Density | ASTM D792 | g/cm³ | 1.49 |
| Tensile Strength | ASTM D638 | MPa | 159 |
| Flexural Modulus | ASTM D790 | GPa | 12.0 |
| Notched Izod Impact Strength (@23°C) | ASTM D256 | kJ/m² | 45 |
| Heat Deflection Temperature (@1.82 MPa) | ASTM D648 | °C | 162 |
Case Study: Industrial Water Pump Housing
Challenge: An industrial pump manufacturer wanted to replace a heavy, corrosion-prone cast iron housing. The replacement needed to withstand high internal pressures (up to 10 bar) without ballooning or creep, and be resistant to a wide range of industrial chemicals. Costly engineering polymers like PPS were considered but deemed too expensive.
Solution: LFT-G® PP LGF60-NG06H was proposed. Its 15.0 GPa flexural modulus provided the extreme stiffness needed to resist pressure-induced deformation, performing like the cast iron original. The polypropylene matrix ensured excellent chemical resistance, while the long fiber structure guaranteed long-term dimensional stability under constant pressure and thermal cycling.
Quantifiable Results
Weight Reduction
Total Part Cost
Corrosion Elimination
Applications Where Stiffness is Everything
Automotive Sub-Frames
Replaces multi-piece steel assemblies in non-crash-critical areas, offering massive weight savings with the necessary rigidity to maintain chassis geometry and suspension mounting points.
Dishwasher Chassis
Provides a stable, non-corroding foundation that dampens vibration for quieter operation and ensures perfect alignment of doors and racks for the life of the appliance.
Concrete Forming Panels
A lightweight, reusable alternative to steel or plywood. The high stiffness prevents bowing under the pressure of wet concrete, ensuring straight, true walls while being easier to handle on the job site.
Key Questions Answered
1. Is a 60% glass fiber polypropylene (PP GF60) even possible to mold?
A: Yes, but it requires specialized long-fiber technology (LFT). A standard short-fiber PP GF60 would have extremely poor melt flow and would be nearly impossible to mold into large parts. Our LFT process ensures the polymer fully wets out the fibers, allowing this highly-filled material to be injection molded into robust structural components, though it is best suited for thick-walled designs.
2. At 60% glass fiber, is the material very brittle?
A: While its primary characteristic is extreme stiffness, the long-fiber nature of LFT-G® PP LGF60 provides significantly better impact resistance than a comparable short-fiber version would. The long fibers act to arrest crack propagation. However, for applications where high impact is the primary concern, a lower glass content LFT grade (like LGF30 or LGF40) would be a better choice.
3. What is the main advantage of LFT PP LGF60 over a material like glass-filled Nylon (PA66 GF60)?
A: The primary advantages are cost, density, and moisture resistance. LFT PP LGF60 is significantly more cost-effective than a high-performance polyamide. It has a lower density, providing a better stiffness-to-weight ratio. Crucially, it absorbs virtually zero moisture, meaning its mechanical properties and dimensions remain stable in any environment, whereas Nylon's properties can change significantly when exposed to humidity.
Ready to Engineer the Next Breakthrough?
Elevate your product's performance with the proven strength and versatility of LFT-G® PP LGF60. Contact our material specialists today to discuss your project or request a material sample.
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