Overview
PA11 (Polyamide 11, Nylon 11) is a high-performance bio-based engineering thermoplastic known for its exceptional chemical resistance, flexibility, impact resistance, low moisture absorption, and dimensional stability.
Unlike PA6 and PA66, which are petroleum-based, PA11 is primarily derived from castor oil, making it one of the most sustainable engineering plastics available. PA11 offers excellent durability in harsh environments while maintaining superior toughness across a wide temperature range.
PA11 is widely used in:
- Automotive Fuel Systems
- Pneumatic Tubing
- Oil & Gas Components
- Electrical Cable Jackets
- Medical Devices
- Aerospace Components
- Industrial Fluid Handling Systems
- Flexible Mechanical Parts
Due to its combination of toughness, chemical resistance, and low moisture absorption, PA11 is often selected for demanding applications where conventional nylons may not perform optimally.
Material Specification
| Property | Value |
|---|---|
| Material Designation | PA11 |
| Full Name | Polyamide 11 |
| Common Name | Nylon 11 |
| Material Family | Engineering Thermoplastic |
| Feedstock Source | Castor Oil (Bio-Based) |
| Density | 1.03–1.05 g/cm³ |
| Appearance | Natural, Black, Colored |
| Typical Manufacturing Methods | Injection Molding, Extrusion, CNC Machining, 3D Printing |
| Standard Forms | Rod, Sheet, Tube, Pellets, Powder |
Chemical Composition
PA11 is produced through polymerization of 11-aminoundecanoic acid, derived from renewable castor oil.
| Component | Function |
|---|---|
| Polyamide 11 Polymer | Structural Matrix |
| Stabilizers | Thermal Stability |
| UV Additives (Optional) | Weather Resistance |
| Reinforcements (Optional) | Mechanical Enhancement |
Mechanical Properties
Typical Values
| Property | Value |
|---|---|
| Tensile Strength | 40–55 MPa |
| Yield Strength | 35–50 MPa |
| Elongation at Break | 150–300% |
| Flexural Strength | 50–80 MPa |
| Flexural Modulus | 1.0–1.5 GPa |
| Hardness | Shore D 70–80 |
| Izod Impact Strength | Excellent (No Break in many grades) |
Typical Mechanical Performance
| Property | Performance |
|---|---|
| Toughness | Outstanding |
| Flexibility | Outstanding |
| Impact Resistance | Outstanding |
| Fatigue Resistance | Excellent |
PA11 provides significantly greater flexibility than PA6 and PA66.
Physical Properties
| Property | Value |
|---|---|
| Density | 1.03–1.05 g/cm³ |
| Water Absorption (24h) | 0.3–0.6% |
| Saturated Water Absorption | 1.5–2.0% |
| Thermal Conductivity | 0.22–0.28 W/m·K |
| Electrical Resistivity | >10¹³ Ω·cm |
| Specific Heat Capacity | 1900 J/kg·K |
Thermal Properties
| Property | Value |
|---|---|
| Melting Point | 185–190°C |
| Glass Transition Temperature | 40–45°C |
| Heat Deflection Temperature | 45–70°C |
| Continuous Service Temperature | -40°C to 100°C |
| Short-Term Service Temperature | Up to 130°C |
PA11 maintains excellent toughness even at very low temperatures.
Strength-to-Weight Ratio
| Material | Density (g/cm³) | Tensile Strength |
|---|---|---|
| PA11 | 1.04 | 50 MPa |
| PA12 | 1.02 | 50 MPa |
| PA6 | 1.14 | 80 MPa |
| PA66 | 1.14 | 90 MPa |
PA11 offers moderate strength with exceptional toughness and flexibility.
Chemical Resistance
| Chemical Environment | Performance |
|---|---|
| Oils & Greases | Excellent |
| Fuels | Excellent |
| Diesel | Excellent |
| Hydraulic Fluids | Excellent |
| Alcohols | Excellent |
| Salt Water | Excellent |
| Weak Acids | Good |
| Strong Acids | Fair |
PA11 is widely used in fuel and fluid transport systems due to its outstanding chemical resistance.
Moisture Resistance
| Property | Performance |
|---|---|
| Water Absorption | Low |
| Dimensional Stability | Excellent |
| Humidity Resistance | Excellent |
| Environmental Stability | Excellent |
PA11 absorbs significantly less moisture than PA6 and PA66.
Low Temperature Performance
| Property | Performance |
|---|---|
| Impact Strength at -40°C | Outstanding |
| Flexibility at Low Temperature | Excellent |
| Crack Resistance | Excellent |
| Cold Weather Durability | Excellent |
These characteristics make PA11 ideal for outdoor and aerospace applications.
Electrical Properties
| Property | Value |
|---|---|
| Volume Resistivity | >10¹³ Ω·cm |
| Surface Resistivity | >10¹² Ω |
| Dielectric Strength | 20–30 kV/mm |
| Dielectric Constant | 3.0–3.5 |
PA11 provides excellent electrical insulation performance.
Machinability
| Process | Rating |
|---|---|
| CNC Milling | Excellent |
| CNC Turning | Excellent |
| Drilling | Excellent |
| Tapping | Excellent |
| Routing | Excellent |
Machinability Comparison
| Material | Machinability |
|---|---|
| PA11 | Excellent |
| PA12 | Excellent |
| PA6 | Excellent |
| POM | Excellent |
PA11 can be machined into precise components with excellent surface quality.
Injection Molding Characteristics
| Property | Rating |
|---|---|
| Moldability | Excellent |
| Flow Characteristics | Excellent |
| Surface Finish | Excellent |
| Production Efficiency | Excellent |
| Shrinkage Control | Good |
PA11 is widely used for precision molded tubing and technical components.
3D Printing Characteristics
| Property | Rating |
|---|---|
| SLS Printability | Excellent |
| MJF Printability | Excellent |
| Layer Adhesion | Excellent |
| Impact Resistance | Outstanding |
| Surface Finish | Good |
PA11 is one of the most popular materials for industrial additive manufacturing.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ISO | PA11 |
| ASTM | Nylon 11 |
| DIN | PA11 |
| JIS | Nylon 11 |
| GB/T (China) | PA11 / 尼龙11 |
| UL | Polyamide 11 |
Available Forms
| Product Type | Availability |
|---|---|
| Rod | Yes |
| Sheet | Yes |
| Tube | Yes |
| Pellets | Yes |
| SLS Powder | Yes |
| Injection Molded Parts | Yes |
Typical Applications
Automotive Industry
- Fuel Lines
- Brake Lines
- Fluid Connectors
- Air Tubing
Oil & Gas Industry
- Flexible Tubing
- Chemical Transfer Lines
- Offshore Components
Aerospace Industry
- Lightweight Ducting
- Fluid Transport Systems
- Interior Components
Electrical Industry
- Cable Jackets
- Wire Insulation
- Connectors
Medical Industry
- Medical Tubing
- Device Components
- Flexible Housings
Additive Manufacturing
- Functional Prototypes
- End-Use Parts
- Lightweight Structures
Manufacturing Characteristics
| Manufacturing Process | Rating |
|---|---|
| Injection Molding | Outstanding |
| CNC Machining | Excellent |
| Extrusion | Excellent |
| Blow Molding | Excellent |
| SLS 3D Printing | Outstanding |
Advantages
Bio-Based Material
Manufactured from renewable castor oil resources.
Excellent Chemical Resistance
Outstanding resistance to fuels, oils, and hydraulic fluids.
Low Moisture Absorption
Better dimensional stability than PA6 and PA66.
Outstanding Toughness
Excellent impact performance even at low temperatures.
Flexible and Durable
Combines elasticity with long service life.
Excellent Outdoor Performance
Good UV and weather resistance compared with many nylons.
Limitations
Lower Strength Than PA66
Not suitable for highly loaded structural applications.
Lower Heat Resistance
Compared with PA66 and reinforced nylons.
Higher Material Cost
More expensive than PA6 and PA66.
Softer Material
Lower stiffness than traditional engineering nylons.
Comparison with Common Nylon Grades
| Property | PA11 | PA12 | PA6 | PA66 |
|---|---|---|---|---|
| Moisture Absorption | Excellent | Excellent | Moderate | Moderate |
| Flexibility | Outstanding | Excellent | Moderate | Moderate |
| Chemical Resistance | Excellent | Excellent | Good | Good |
| Strength | Moderate | Moderate | High | Higher |
| Heat Resistance | Good | Good | Better | Best |
Comparison with PA12
| Property | PA11 | PA12 |
|---|---|---|
| Bio-Based Content | Yes | No |
| Chemical Resistance | Excellent | Excellent |
| Impact Resistance | Slightly Better | Excellent |
| Flexibility | Excellent | Excellent |
| Cost | Higher | Moderate |
Available Surface Finishes
Standard Finishes
- Natural Finish
- Black Finish
- Molded Finish
Functional Finishes
- CNC Machined Finish
- Smooth Extruded Finish
- Polished Finish
Specialty Finishes
- UV Stabilized Finish
- Conductive Grade Finish
- Glass Filled Grade Finish
Frequently Asked Questions (FAQ)
What is PA11?
PA11 (Nylon 11) is a bio-based engineering plastic derived from castor oil, known for excellent flexibility, toughness, and chemical resistance.
What is PA11 used for?
Typical applications include:
- Fuel Lines
- Pneumatic Tubing
- Medical Devices
- Aerospace Components
- Industrial Fluid Systems
Is PA11 stronger than PA6?
No. PA6 offers higher strength, while PA11 provides better flexibility and chemical resistance.
What is the advantage of PA11?
Its low moisture absorption, bio-based origin, excellent toughness, and superior chemical resistance.
Is PA11 suitable for 3D printing?
Yes. PA11 is one of the leading materials for SLS and industrial additive manufacturing.
Why choose PA11?
Because it combines:
- Bio-Based Sustainability
- Excellent Chemical Resistance
- Low Moisture Absorption
- Outstanding Impact Resistance
- Exceptional Flexibility
Is PA11 suitable for fuel systems?
Yes. PA11 is widely used in automotive and industrial fuel transport applications.
Does GCNOV provide PA11 manufacturing services?
Yes. GCNOV provides:
- PA11 CNC Machining
- PA11 Injection Molding
- PA11 Extrusion
- SLS 3D Printing
- Prototype Development
- Low-Volume Production
- Mass Production
- Custom Engineering Components