LFT-G® PP LGF30, or Polypropylene Long Glass Fiber 30, refers to a composite material that consists of polypropylene reinforced with 30% long glass fibers. This material offers outstanding mechanical properties, such as high strength, stiffness, and heat deflection. It is commonly used in metal replacement applications due to its high strength properties, lower specific gravity, and the attractiveness of the injection molding processing method.
PP LGF30 exhibits excellent anti-creep and fatigue resistance, low warpage, and chemical coupling.Additionally, the notched impact strength of this material is increased at elevated and low temperatures due to the fiber skeleton built into the parts. PP LGF30 is impact-modified and offers a combination of high performance and durability.
Key Specifications (LFT-G® PP-LGF30 Grade)
Typical Material Properties (LFT-PP-LGF30-NG03)
The physical values detailed below represent typical metrics recorded inside the LFT-G® Polymer Characterization Facility under Dry-As-Molded (DAM) conditions. Testing complies strictly with verified ISO and ASTM standards to ensure absolute technical data verification.
Mechanical Testing Profile
| Property | Test Standard | Value (DAM State) |
|---|---|---|
| Tensile Strength | ISO 527 | 115 MPa |
| Tensile Modulus | ISO 527 | 7,200 MPa |
| Flexural Strength | ISO 178 | 155 MPa |
| Flexural Modulus | ISO 178 | 5,200 MPa |
| Notched Izod Impact | ISO 180 | 32 kJ/m² |
Thermal & Physical Analysis
| Property | Test Standard | Value |
|---|---|---|
| Density | ISO 1183 | 1.12 g/cm³ |
| HDT (0.45 MPa) | ISO 75 | 159 °C |
| HDT (1.80 MPa) | ISO 75 | 155 °C |
| Mold Shrinkage | ISO 294-4 | 0.15 - 0.30 % |
Download Complete LFT-G PP LGF30 Data Sheet PDF
Processing Guidelines – Injection Molding
Pre-drying
80–90°C / 2–4h
Moisture < 0.1%
Injection
Melt 200–230°C
Mold 40–70°C Pressure 80–120 MPa
Tooling
Low-compression screw
Full round runners (Ø5–6mm) L/D 18:1–22:1
Multi-Industry Application Cases
Automotive Inner Door Module Carriers
Integrated door panel carriers require a balanced stiffness-toughness profile to support electric window motors, wire harnesses, and speakers without warping. LFT-G® PP LGF30 Black replaces heavy steel frames and weak short-fiber PP, facilitating modular door assemblies and providing deep NVH acoustic damping.
Dashboard & Instrument Panel Carrier Frames
IP carriers hold dashboard instrumentation, air ducts, and airbags. They require high impact safety characteristics, especially during airbag deployment under sub-zero temperatures. The 30% long glass fiber matrix prevents dynamic shatter, guaranteeing predictable impact energy management.
Industrial Pump Impellers & Shrouds
Components operating in water-contact environments require hydrolysis protection and low dimensional expansion. Unlike polyamides (nylons) that absorb moisture and lose stiffness, PP LGF30 maintains its physical dimensions and mechanical properties permanently in humid industrial fluid networks.
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