Overview
Glass Filled Nylon (GF Nylon) is a reinforced engineering thermoplastic produced by adding glass fibers (typically 10–50%) to nylon resins such as PA6, PA66, PA11, or PA12. The glass fiber reinforcement significantly improves strength, stiffness, dimensional stability, creep resistance, wear resistance, and heat resistance compared to unfilled nylon.
The most common grades include:
- PA6 GF30 (30% Glass Filled Nylon 6)
- PA66 GF30 (30% Glass Filled Nylon 66)
- PA66 GF50 (50% Glass Filled Nylon 66)
- PA12 GF30
- PA11 GF30
Glass Filled Nylon is widely used in:
- Automotive Engine Components
- Structural Industrial Parts
- Electrical Connectors
- Mechanical Brackets
- Power Tool Housings
- Gears and Wear Components
- Aerospace Components
- High-Load Engineering Applications
Due to its exceptional strength-to-weight ratio and durability, Glass Filled Nylon is one of the most widely used reinforced engineering plastics worldwide.
Material Specification
| Property | Value |
|---|---|
| Material Designation | Glass Filled Nylon |
| Common Abbreviation | GF Nylon |
| Material Family | Reinforced Engineering Thermoplastic |
| Base Resin | PA6, PA66, PA11, PA12 |
| Glass Fiber Content | 10–50% |
| Density | 1.25–1.55 g/cm³ |
| Appearance | Natural, Black, Custom Colors |
| Typical Manufacturing Methods | Injection Molding, CNC Machining |
| Standard Forms | Rod, Sheet, Pellets |
Chemical Composition
| Component | Function |
|---|---|
| Polyamide Resin | Structural Matrix |
| Glass Fibers | Strength & Stiffness |
| Heat Stabilizers | Thermal Resistance |
| Lubricants (Optional) | Wear Reduction |
| UV Additives (Optional) | Weather Resistance |
The glass fiber reinforcement dramatically improves mechanical and thermal performance.
Mechanical Properties
Typical PA66 GF30 Values
| Property | Value |
|---|---|
| Tensile Strength | 150–200 MPa |
| Yield Strength | 130–180 MPa |
| Elongation at Break | 2–5% |
| Flexural Strength | 220–300 MPa |
| Flexural Modulus | 7–12 GPa |
| Hardness | Rockwell R120–125 |
| Compressive Strength | 180–250 MPa |
Typical Mechanical Performance
| Property | Performance |
|---|---|
| Strength | Outstanding |
| Stiffness | Outstanding |
| Creep Resistance | Excellent |
| Fatigue Resistance | Excellent |
Glass-filled grades can provide more than double the stiffness of unfilled nylon.
Physical Properties
| Property | Value |
|---|---|
| Density | 1.25–1.55 g/cm³ |
| Water Absorption | 0.8–4.0% |
| Thermal Conductivity | 0.30–0.50 W/m·K |
| Electrical Resistivity | >10¹¹ Ω·cm |
| Specific Heat Capacity | 1300 J/kg·K |
Thermal Properties
| Property | Value |
|---|---|
| Melting Point (PA66 GF) | 255–265°C |
| Heat Deflection Temperature | 220–260°C |
| Continuous Service Temperature | -40°C to 150°C |
| Short-Term Service Temperature | Up to 200°C |
Glass Filled Nylon offers significantly better thermal performance than standard nylon grades.
Strength-to-Weight Ratio
| Material | Density (g/cm³) | Tensile Strength |
|---|---|---|
| PA66 GF30 | 1.36 | 180 MPa |
| PA66 | 1.14 | 90 MPa |
| PA6 | 1.14 | 80 MPa |
| Aluminum 6061 | 2.70 | 310 MPa |
Glass Filled Nylon provides exceptional structural performance while remaining lightweight.
Dimensional Stability
| Property | Performance |
|---|---|
| Thermal Expansion Resistance | Excellent |
| Warpage Resistance | Excellent |
| Shrinkage Control | Excellent |
| Precision Molding Capability | Excellent |
Glass fibers significantly reduce thermal expansion and molding shrinkage.
Wear Resistance
| Property | Performance |
|---|---|
| Abrasion Resistance | Excellent |
| Sliding Wear Resistance | Excellent |
| Surface Durability | Excellent |
| Bearing Performance | Good |
Glass Filled Nylon performs exceptionally well in structural wear applications.
Chemical Resistance
| Chemical Environment | Performance |
|---|---|
| Oils & Greases | Excellent |
| Fuels | Excellent |
| Hydraulic Fluids | Excellent |
| Alcohols | Good |
| Alkalis | Good |
| Strong Acids | Poor |
| Oxidizing Agents | Poor |
Chemical resistance remains similar to the base nylon resin.
Moisture Resistance
| Property | Performance |
|---|---|
| Moisture Absorption | Lower Than Standard Nylon |
| Dimensional Stability | Improved |
| Humidity Resistance | Good |
| Environmental Stability | Good |
Glass reinforcement helps reduce dimensional changes caused by moisture absorption.
Electrical Properties
| Property | Value |
|---|---|
| Volume Resistivity | >10¹¹ Ω·cm |
| Surface Resistivity | >10¹⁰ Ω |
| Dielectric Strength | 10–20 kV/mm |
| Dielectric Constant | 3.5–4.5 |
Glass Filled Nylon remains suitable for many electrical and electronic applications.
Machinability
| Process | Rating |
|---|---|
| CNC Milling | Excellent |
| CNC Turning | Excellent |
| Drilling | Excellent |
| Tapping | Good |
| Routing | Excellent |
Machinability Comparison
| Material | Machinability |
|---|---|
| Nylon | Excellent |
| Glass Filled Nylon | Good |
| POM | Excellent |
| Aluminum 6061 | Good |
Glass fibers increase tool wear compared with unfilled nylon.
Injection Molding Characteristics
| Property | Rating |
|---|---|
| Moldability | Excellent |
| Structural Performance | Outstanding |
| Shrinkage Control | Excellent |
| Production Efficiency | Excellent |
| Dimensional Accuracy | Excellent |
Glass Filled Nylon is widely used for precision structural molded components.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ISO | PA-GF |
| ASTM | Glass Fiber Reinforced Nylon |
| DIN | PA66 GF30 / PA6 GF30 |
| JIS | GF Nylon |
| GB/T (China) | 玻纤增强尼龙 |
| UL | Reinforced Polyamide |
Available Forms
| Product Type | Availability |
|---|---|
| Rod | Yes |
| Sheet | Yes |
| Pellets | Yes |
| Injection Molded Parts | Yes |
| Structural Components | Yes |
Typical Applications
Automotive Industry
- Intake Manifolds
- Engine Covers
- Structural Brackets
- Cooling System Components
Electrical Industry
- Connectors
- Circuit Breaker Components
- Switch Housings
- Terminal Blocks
Industrial Machinery
- Structural Supports
- Gears
- Rollers
- Bearing Housings
Power Tools
- Gear Housings
- Structural Frames
- Mechanical Supports
Aerospace Industry
- Lightweight Structural Components
- Interior Assemblies
- Mechanical Supports
Consumer Electronics
- Structural Chassis
- Equipment Frames
- Internal Supports
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| Injection Molding | Outstanding |
| CNC Machining | Good |
| Extrusion | Excellent |
| Secondary Assembly | Excellent |
Advantages
Outstanding Strength
Up to twice the strength of standard nylon.
Exceptional Stiffness
Ideal for structural applications.
Excellent Heat Resistance
Suitable for demanding thermal environments.
Improved Dimensional Stability
Reduced shrinkage and thermal expansion.
Lightweight
Much lighter than aluminum and steel.
Cost Effective
Lower cost than many metal alternatives.
Limitations
Reduced Impact Resistance
Less tough than unfilled nylon.
Increased Tool Wear
Glass fibers accelerate machining tool wear.
Surface Appearance
Glass fibers may affect cosmetic finish quality.
Higher Density
Heavier than standard nylon grades.
Comparison with Common Nylon Grades
| Property | Glass Filled Nylon | PA66 | PA6 | PA12 |
|---|---|---|---|---|
| Strength | Outstanding | Excellent | Good | Moderate |
| Stiffness | Outstanding | Good | Good | Moderate |
| Heat Resistance | Outstanding | Excellent | Good | Moderate |
| Impact Resistance | Moderate | Good | Better | Excellent |
| Dimensional Stability | Outstanding | Good | Good | Excellent |
Comparison with Engineering Materials
| Material | Density | Tensile Strength |
|---|---|---|
| PA66 GF30 | 1.36 g/cm³ | 180 MPa |
| PA66 | 1.14 g/cm³ | 90 MPa |
| Aluminum 6061 | 2.70 g/cm³ | 310 MPa |
| Zinc Alloy | 6.60 g/cm³ | 280 MPa |
Glass Filled Nylon often serves as a lightweight metal replacement.
Available Surface Finishes
Standard Finishes
- Molded Finish
- Matte Finish
- Textured Finish
Functional Finishes
- CNC Machined Finish
- Bead Blasted Finish
- Ground Finish
Specialty Grades
- PA66 GF30
- PA66 GF50
- PA6 GF30
- Heat Stabilized GF Nylon
- Flame Retardant GF Nylon
Frequently Asked Questions (FAQ)
What is Glass Filled Nylon?
Glass Filled Nylon is a reinforced nylon material containing glass fibers that improve strength, stiffness, and heat resistance.
What is Glass Filled Nylon used for?
Typical applications include:
- Automotive Components
- Electrical Connectors
- Structural Parts
- Industrial Machinery
- Aerospace Components
Is Glass Filled Nylon stronger than standard Nylon?
Yes. Tensile strength can increase from approximately 80–90 MPa to over 180 MPa depending on glass fiber content.
What is the most common grade?
PA66 GF30 (30% Glass Filled Nylon 66) is one of the most widely used reinforced nylon grades.
Can Glass Filled Nylon be machined?
Yes. It offers good CNC machining performance, though tooling wear is higher than standard nylon.
Why choose Glass Filled Nylon?
Because it combines:
- Outstanding Strength
- Exceptional Stiffness
- High Heat Resistance
- Excellent Dimensional Stability
- Lightweight Performance
Is Glass Filled Nylon a metal replacement material?
Yes. It is frequently used to replace aluminum, zinc, and steel in structural applications.
Does GCNOV provide Glass Filled Nylon manufacturing services?
Yes. GCNOV provides:
- Glass Filled Nylon CNC Machining
- Injection Molding
- Structural Plastic Fabrication
- Prototype Development
- Surface Finishing
- Low-Volume Production
- Mass Production
- Engineering Component Manufacturing