eSUN ePA
High-Toughness Nylon Filament for Functional and Industrial Parts
eSUN ePA Natural is a high-performance nylon filament developed from a PA6/66 copolymer, combining excellent toughness, impact resistance, wear resistance, and printability. Its self-lubricating properties make it particularly suitable for producing gears, bushings, and other moving mechanical components.
With an elongation at break of up to 175%, ePA can withstand repeated stress and impacts without cracking, making it ideal for durable functional parts and engineering applications. Compared to conventional nylon materials, it exhibits low shrinkage and improved dimensional stability, reducing the risk of warping and cracking during printing.
Key Features
High toughness and flexibility
Excellent impact resistance
Self-lubricating and wear-resistant
Low shrinkage and reduced warping
Strong layer adhesion
Suitable for functional and load-bearing parts
Excellent printability compared to standard nylon materials
Recommended Applications
Mechanical engineering components
Gears and wear-resistant parts
Automotive components
Electronic housings and fixtures
Aerospace prototypes
Consumer products
Functional prototypes and end-use parts
Technical Specifications
| Property | Value |
|---|---|
| Material | PA6/66 Copolymer (Nylon) |
| Diameter | 1.75 mm |
| Net Weight | 1 kg |
| Density | 1.12 g/cm³ |
| Melt Flow Index | 12.3 g/10 min (230°C / 2.16 kg) |
| Heat Deflection Temperature (0.45 MPa) | 99.6°C |
| Tensile Strength (XY) | 43.64 MPa |
| Tensile Strength (Z) | 41.46 MPa |
| Elongation at Break (XY) | 164.88% |
| Elongation at Break (Z) | 10.77% |
| Flexural Strength (XY) | 53.9 MPa |
| Flexural Strength (Z) | 54.2 MPa |
| Flexural Modulus (XY) | 1482.73 MPa |
| Flexural Modulus (Z) | 1641.81 MPa |
| Izod Impact Strength (XY) | 75.87 kJ/m² |
| Izod Impact Strength (Z) | 4.44 kJ/m² |
| Durability | 9/10 |
| Printability | 9/10 |
Recommended Printing Parameters
| Setting | Value |
|---|---|
| Nozzle Temperature | 250–290°C |
| Recommended Nozzle Temperature | 265°C |
| Bed Temperature | 70–90°C |
| Heated Bed | Required |
| Cooling Fan | 0% |
| Print Speed | Up to 150 mm/s (Recommended: 40–100 mm/s) |
| Drying Conditions | 70°C for at least 12 hours |
| Nozzle Type | Hardened Steel Recommended |
| Storage | Keep sealed and dry during printing |
Important Notes
Nylon is highly hygroscopic and readily absorbs moisture from the air. For optimal print quality and mechanical performance, dry the filament at 70°C for at least 12 hours before printing and print directly from a sealed dry box whenever possible.
eSUN ePA delivers an excellent balance of strength, toughness, wear resistance, and ease of printing, making it an ideal choice for demanding engineering and industrial applications.
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