LFT-G®PP GF40 (LGF40)–High Impact PP For Pump Applications
LFT-GF30 PP 40 (14)
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LFT-G®PP GF40 (LGF40)–High Impact PP For Pump Applications
Details
The High-Impact Upgrade for Standard Short Fiber PP GF40
✓ Extreme Impact Strength:53 kJ/m²,3X than standard GF40
✓ Hydrolysis Resistant: Excellent stability in Extreme environments
✓ High Fatigue Endurance: Withstands cyclic pressure than million time.
✓ Dimensional Precision: minimizes warpage in complex impeller and casing designs
LFT-G® PP GF40 (Copolymer) – High Impact Long Glass Fiber Polypropylene
LFT-G® PP GF40 (Model :LFT-CPP-LGF40YD) is a high-performance 40% long glass fiber reinforced Copolymer Polypropylene (PP) composite. Unlike standard homopolymer grades, this engineered material is specifically formulated for extreme toughness, delivering a notched impact strength of 53 kJ/m².
Manufactured using advanced pultrusion technology, the glass fibers within the pellet (10-12mm) remain parallel and fully impregnated. This long fiber structure creates a skeletal network inside the molded part, providing superior fatigue resistance and dimensional stability. It is the ideal metal replacement solution for water pump housings, impellers, and fluid engineering components where hydrolysis resistance and impact durability are critical.
Key Advantages for Pump Applications:
High Impact Copolymer Matrix: Offers superior toughness at low temperatures compared to homopolymer PP.
Hydrolysis & Chemical Resistance: Excellent stability in hot water, coolants, and detergents, preventing degradation over time.
Low Warpage & Creep: Long fibers inhibit anisotropic shrinkage, ensuring tight seals and precise fitting for pump casings.
Fatigue Endurance: Resists failure under the cyclic internal pressure and vibration common in high-performance pumps.
Performance Metrics: LFT-G® Copo-PP LGF40 vs. Standard Materials
Impact Strength
53 kJ/m² (High Impact)
Weight Efficiency
40% Lighter vs. Brass/Alu
Water Resistance
No Corrosion (Polymer Base)
Material Specifications: LFT-G® CPP-LGF40YD High Impact Grade
LFT-G® CPP-LGF40YD is engineered to replace brass, stainless steel, and aluminum in fluid management systems. Its high impact resistance and hydrolytic stability make it the material of choice for the pump industry.
Pump Housings
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Pressure Resistant
Withstands high internal pressure without bursting or deformation.
Impellers
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Balanced & Durable
High fatigue strength prevents blade fracture under cavitation.
Valve Bodies
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Corrosion Free
Replaces brass to eliminate lead contamination and rust.
Success Story: Metal Replacement in Centrifugal Pumps
The Challenge:
A leading manufacturer of agricultural water pumps faced issues with their cast iron pump casings. The metal parts were heavy, prone to rusting, and required expensive secondary machining to achieve the necessary tolerances for the seal areas.
The LFT-G® Solution:
They switched to LFT-G® CPP-LGF40YD (Copolymer PP LGF40). The high impact grade was chosen to withstand accidental drops during installation and the water hammer effect during operation. The long fibers provided the structural rigidity needed to hold the bearings firmly in place.
The Results:
Weight Reduction: The pump weight decreased by 45%, reducing shipping costs.
Cost Savings: Eliminated painting and anti-corrosion treatments.
Durability: Passed the 53 kJ/m² impact test, ensuring field reliability.
Frequently Asked Questions (FAQ)
Q: What is the difference between PP GF40 and PP LGF40?
A: The main difference is fiber length. PP GF40 usually refers to short fibers (<1mm) which are brittle. PP LGF40 (Long Glass Fiber) contains fibers 10-12mm long. This network structure provides 3x higher impact strength and significantly better creep resistance, making it suitable for structural pump parts.
Q: Why use Copolymer PP instead of Homopolymer for pumps?
A: Copolymer PP (Copo) has a rubber phase that makes it much tougher than Homopolymer (Homo). For water pumps that may experience freezing temperatures or water hammer shocks, our LFT-G® Copolymer LGF40 (53 kJ/m² Impact) prevents cracking where standard Homopolymer might fail.
Q: Is LFT-PP LGF40 suitable for hot water pumps?
A: Yes. Polypropylene has excellent hydrolysis resistance and does not absorb water like Nylon (PA66). LFT-G® LGF40 maintains its mechanical properties and dimensions even in continuous contact with hot water and glycol mixtures, making it superior to PA66 GF30 for wet applications.
Need High Impact Strength for Your Pumps?
Contact LFT-G® engineers for material selection and mold support.
