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PA (Polyamide), commonly known as Nylon, is a polymer featuring repeating amide linkages (–CO–NH–). It offers low density, high thermal stability, excellent wear resistance, a favorable friction coefficient, and outstanding temperature resistance along with impact strength.
Polyamide plastics are typically designated with numbers such as PA6, PA66, PA12, and PA46. These numbers refer to the molecular structure of the PA polymer, with each structure delivering different performance characteristics. Depending on the type, PA has a melting point ranging from 220°C to 260°C.
High strength, high toughness, impact-resistant, fatigue-resistant — capable of bearing medium loads, suitable for various functional load-bearing parts
Inherent lubricity with outstanding wear resistance, ideal for gears, bearings, and sliding components prone to wear
Heat deflection temperature of 99.6°C (per PA TDS), resistant to engine oil, fuel, and various solvents — suitable for industrial and automotive oily environments
Easily compounded with glass fiber, carbon fiber, lubricants, and other additives to enhance strength, stiffness, or wear resistance on demand
Engineering-grade performance for fixtures, mechanical parts, industrial prototypes, and other professional applications
Flex-resistant, not prone to brittle fracture — suitable for moving parts subject to repeated motion
High strength and toughness, impact-resistant, fatigue-resistant — stable and reliable under medium loads
Inherent lubricity with excellent wear resistance — ideal for gears, bearings, and other wear-prone components
Resistant to engine oil, fuel, and common solvents — suitable for oily and industrial chemical environments
Long-term heat resistance of 99.6°C, withstanding even higher temperatures in short bursts
| Feature | Description | Impact |
|---|---|---|
| Extremely moisture-sensitive | Absorbs moisture from air easily; strength and dimensional stability degrade when damp | Strict pre-drying required before printing |
| Demanding print conditions | Extrusion 250-290°C, heated bed 70-90°C, drying 70°C/>12h, enclosed chamber required | High equipment barrier; not for entry-level printers |
| Higher cost | More expensive than PLA and ABS; reinforced grades cost even more | Best suited for industrial applications with clear performance requirements |
| Moderate weather resistance | Not UV-resistant; prone to aging and discoloration during prolonged outdoor exposure | Not suitable for long-term outdoor use |
| Weak acid/base resistance | Not resistant to concentrated acids or strong alkalis | Not suitable for highly corrosive environments |
From PA to PA-CF to PA6-CF, eSUN continuously strengthens its modification capabilities, providing more professional material solutions for industrial-grade applications.
eSUN's standard polyamide filament delivers the core properties of nylon: high strength, high toughness, self-lubricating wear resistance, and oil/chemical resistance — suitable for general engineering applications such as gears, bearings, and fixtures.
Carbon fiber-reinforced PA that significantly enhances strength and stiffness while maintaining low-friction wear resistance. Ideal for industrial functional parts requiring higher strength and rigidity.
A carbon fiber-reinforced version based on PA6 substrate, further optimizing mechanical properties and processing characteristics for high-end industrial applications.
A carbon fiber-reinforced version based on PA12 substrate. PA12 offers lower moisture absorption and better dimensional stability, making it suitable for applications requiring higher precision.
| Industry | Typical Applications |
|---|---|
| Industrial Manufacturing | Gears, bearings, bushings, fixtures and jigs, wear-resistant sliders, mechanical connectors |
| Automotive | Engine peripheral parts, fuel system components, interior structural parts, door wear parts |
| Electronics & Electrical | Insulating brackets, electrical housings, wear-resistant buttons |
| Sports Equipment | Racket accessories, protective gear frames, fitness equipment parts |
| Medical & Healthcare | Compliant rehabilitation aids, orthotic brackets |
Uses PA-CF to customize automotive parts
Uses PA-CF to customize drone components
Compared with: ABS, PPS
| Dimension | PA | ABS | PPS |
|---|---|---|---|
| Self-Lubrication & Wear Resistance | Inherent self-lubrication, low friction coefficient, best wear resistance | Moderate wear resistance | High hardness but high friction, no self-lubrication |
| Oil & Fatigue Resistance | Extremely resistant to engine oil, fuel, and various oils; withstands hundreds of thousands of bending cycles | Moderate oil resistance | Fatigue resistance inferior to PA |
| Toughness & Processability | Impact toughness far exceeds PPS; wider processing temperature window than PPS | Good toughness, easy to process | Clearly brittle; highest processing temperature requirements |
| Print Difficulty | High (drying + enclosed chamber + high-temp extrusion required) | High (enclosed chamber + high-temp heated bed required) | Very high (highest processing temperature requirements) |
| Weather Resistance | Moderate; not UV-resistant | Moderate; yellowing and embrittlement after prolonged sun exposure | Good |
| Parameter | Recommended | Notes |
|---|---|---|
| Drying Temperature / Time | 70°C / >12h | Strict pre-drying required before printing |
| Extrusion Temperature | 250 - 290°C | Fine-tune based on specific PA type |
| Heated Bed Temperature | 70 - 90°C | High-temp bed used with adhesive |
| Chamber Temperature | Enclosed & insulated | Enclosed chamber printer required |
| Cooling Fan | Off or very low | Avoid interlayer cracking |
| Print Speed | 30 - 60 mm/s | Reduce speed for complex models |
| Dry Storage | Sealed dry storage | Recommended to use with eBOX filament box |