White COEXNylex Unfilled Nylon is made from nylon resin. It prints on most 3D printers and makes durable, strong parts.
Recommended print settings
- Hotend: 245–295°C
- Bed: 85–110°C, on a solvent-cleaned surface
- Part cooling fan not recommended. It can cause layer delamination.
- Retraction: start at 1–1.5 mm at 10–30 mm/s for direct-drive extruders, or 2.5 mm at 30–35 mm/s for indirect-drive extruders
- Ships pre-dried. If it pops or strings, dry at 80 °C for 8–12 hours.
Specs
- Material: COEXNylex unfilled nylon
- Tolerance: ±0.03 mm (1.75 mm) · ±0.06 mm (2.85 mm)
- Other spool sizes available by request: contact us.
- Extruded, quality controlled and shipped from one plant in Green Bay, WI.
COEX 3D Filament Slicer Profiles
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CX21 COEXNylex Unfilled Technical Data Sheet
COEXNylex™ Unfilled Nylon 3D Printer Filament
Nylon 6 copolymer · Product code CX21 · 1.75 mm and 2.85 mm
Base resin: Nylon 6 copolymer
Typical values for the base resin. Printed parts vary with print settings, orientation and moisture content.
Physical properties
| Property | Standard | Unit | Typical value |
|---|---|---|---|
| Specific gravity | ASTM D792 | g/cm³ | 1.1 |
Mechanical properties
| Property | Standard | Unit | Typical value |
|---|---|---|---|
| Tensile strength | ASTM D638 | MPa (psi) | 67 (9,720) |
| Tensile modulus | ASTM D638 | MPa (psi) | 2,000 (290,000) |
| Elongation at break | ASTM D638 | % | 4 |
| Flexural strength | ASTM D790 | MPa (psi) | 63 (9,140) |
| Flexural modulus | ASTM D790 | MPa (psi) | 1,100 (160,000) |
| Izod impact, notched | ASTM D256 | J/m (ft·lb/in) | 52 (0.974) |
| Izod impact, unnotched | ASTM D256 | J/m (ft·lb/in) | 2,400 (45.0) |
Thermal properties
| Property | Standard | Unit | Typical value |
|---|---|---|---|
| Melting point | ASTM D648 (as stated by resin maker) | °C (°F) | 195 (383) |
Filament specifications
| Diameter | Nominal | Minimum | Maximum | Tolerance |
|---|---|---|---|---|
| 1.75 mm | 1.75 mm (0.0689 in) | 1.72 mm (0.0677 in) | 1.78 mm (0.0701 in) | ±0.03 mm (±0.0012 in) |
| 2.85 mm | 2.85 mm (0.1122 in) | 2.79 mm (0.1098 in) | 2.91 mm (0.1146 in) | ±0.06 mm (±0.0024 in) |
Recommended print settings
| Nozzle temperature | 245–295°C |
| Bed temperature | 85–110°C |
| Part cooling fan | Not recommended |
| Enclosure | Required |
| Bed adhesion | WELD3D, PVA-based glue stick (e.g., Elmer's) |
| Drying | 80°C for 8–12 hours |
| Storage | Keep sealed and dry; nylon absorbs moisture from the air |
Advantages
Heat resistant, chemical resistant, strong, durable. Lightweight and incredibly strong material to make durable, functional parts.
www.coex3d.com · COEX LLC, 1228 Elizabeth St, Green Bay, WI 54302, USA · (920) 757-1055
Disclaimer: The technical data contained on this data sheet is furnished without charge or obligation and accepted at the recipient's sole risk. This data should not be used to establish specification limits or used alone as the basis of design. The data provided is not intended to substitute any testing that may be required to determine fitness for any specific use.
CX21 CoexNylex Unfilled Safety Data Sheet
COEXNylex™ Unfilled Nylon 3D Printer Filament
Natural, Black, White · Product code CX21 · 1.75 mm and 2.85 mm
1. Identification
| Product identifier | COEXNylex™ Unfilled Nylon 3D printer filament (Natural, Black, White) |
| Product code | CX21 |
| Recommended use | 3D printing (FFF/FDM) filament, thermoplastic |
| Restrictions on use | Not specified |
| Supplier | COEX LLC, 1228 Elizabeth St, Green Bay, WI 54302, USA |
| Telephone | (920) 757-1055 |
| Emergency telephone | (920) 757-1055 (business hours) |
| Website | www.coex3d.com |
2. Hazard identification
| Classification | Not classified as hazardous under the OSHA Hazard Communication Standard, 29 CFR 1910.1200. |
| Label elements | None required. No signal word, pictogram or hazard statement. |
| Hazards not otherwise classified | No specific dangers known. |
| Other information | Molten material can cause thermal burns. Wear protective equipment when handling hot material. |
3. Composition / information on ingredients
| Chemical name | CAS No. | Weight % |
|---|---|---|
| Nylon (nylon 6 copolymer) | Proprietary | 96–100 |
| Colorant (Black and White only) | Proprietary | 0–4 |
Exact nylon identity is withheld as proprietary. The product contains no substances which at their given concentration are considered to be hazardous to health.
4. First-aid measures
| Inhalation | If difficulties occur after dust or fumes from processing have been inhaled, move to fresh air and consult a physician. |
| Eye contact | Rinse thoroughly with plenty of water for at least 15 minutes, lifting lower and upper eyelids. Consult a physician. |
| Skin contact | Molten material: cool the skin immediately with cold water. Medical aid may be required to remove adhering material and to treat burns. Solid material: wash with soap and water. |
| Ingestion | Drink plenty of water. Do not induce vomiting without medical advice. Call a physician immediately. |
| Most important symptoms | No data available. |
| Note to physicians | Treat according to symptoms. |
5. Fire-fighting measures
| Suitable extinguishing media | Water spray, foam, dry powder. |
| Special hazards | Ammonium hydroxide, carbon monoxide, carbon dioxide, hydrocarbons, nitriles and hydrogen cyanide can be emitted above 320 °C. |
| Protective equipment | Self-contained breathing apparatus and turnout gear. Do not breathe fumes. |
| Further information | Dispose of fire debris and contaminated extinguishing water in accordance with official regulations. |
6. Accidental release measures
| Personal precautions | Spilled filament or pieces may cause a slipping hazard. Ensure adequate ventilation. |
| Environmental precautions | Do not flush into surface water or sanitary sewer system. Keep out of waterways. |
| Cleaning up | Pick up or sweep up and place in a suitable container for disposal. |
7. Handling and storage
| Safe handling | Avoid contact with molten polymer. Avoid inhalation of dusts, mists and vapors. Print in a well-ventilated area. |
| Fire and explosion | Dust from grinding or sanding can form an explosive mixture with air. Take precautionary measures against static discharges. |
| Storage | Keep sealed and dry in a cool place. Protect against moisture. Avoid sources of ignition. |
| Incompatibilities | No substances known that should be avoided. |
8. Exposure controls / personal protection
| Exposure limits | This product, as supplied, does not contain any hazardous materials with occupational exposure limits established by the region-specific regulatory bodies. |
| Engineering controls | Provide exhaust ventilation if dust or fumes are generated during processing. |
| Eye protection | Safety glasses with side shields. |
| Skin protection | Heat-protective gloves when handling hot material. |
| Respiratory protection | Not normally required. If the product is ground or sanded to respirable dust, use respiratory protection under a program that meets OSHA 29 CFR 1910.134. |
| Hygiene | Do not eat or drink while working. Handle in accordance with good industrial hygiene and safety practice. |
9. Physical and chemical properties
| Appearance | Solid filament on spool; natural, black or white |
| Odor | Odorless |
| Odor threshold | Not applicable |
| pH | Not applicable |
| Melting temperature | Approximately 195 °C |
| Freezing point | No data available |
| Boiling point | Decomposes; not determined |
| Flash point | Not applicable |
| Evaporation rate | Not applicable (solid) |
| Flammability | Not self-igniting |
| Explosive limits | No data available |
| Vapor pressure / vapor density | No data available |
| Density | No data available |
| Solubility in water | Insoluble |
| Partition coefficient | No data available |
| Auto-ignition temperature | No data available |
| Decomposition temperature | Above 320 °C |
| Viscosity | Not applicable (solid) |
| Oxidizing properties | Not fire-propagating |
10. Stability and reactivity
| Reactivity | No hazardous reactions if stored and handled as indicated. |
| Chemical stability | Stable at recommended storage conditions. |
| Hazardous reactions | None known. |
| Conditions to avoid | Temperatures above 320 °C. |
| Incompatible materials | No substances known that should be avoided. |
| Hazardous decomposition products | Ammonium hydroxide, carbon monoxide, carbon dioxide, hydrogen cyanide, nitriles. |
11. Toxicological information
| Routes of exposure | Inhalation, ingestion, eye or skin contact. |
| Acute toxicity | Contact with molten product may cause thermal burns. The solid product poses a low hazard. Oral and dermal: practically nontoxic; not tested. |
| Inhalation | Not inhalable in the form supplied. |
| Irritation | Irritation is possible when the product contacts the skin, respiratory tract or eyes. Thermal decomposition products can irritate the eyes, skin and respiratory tract. Dust may cause mechanical eye irritation. |
| Sensitization, repeated dose, mutagenicity, carcinogenicity, reproductive toxicity | Based on experience and the information available, no adverse health effects are expected if handled as recommended with suitable precautions for designated uses. |
| Aspiration hazard | None expected. |
12. Ecological information
| Aquatic toxicity | Not tested. There is a high probability that the product is not acutely harmful to aquatic organisms. |
| Persistence and degradability | Inert and non-degradable. Virtually insoluble in water; can be separated from water mechanically in suitable effluent treatment plants. |
| Bioaccumulation | Not readily bioavailable due to its consistency and insolubility in water. |
13. Disposal considerations
| Product | Dispose of in accordance with local, state and federal regulations. Check for recycling options. Do not release into the environment. |
| Packaging | Empty spools and packaging can be recycled if not contaminated. |
14. Transport information
| US DOT, IMDG, IATA/ICAO | Not classified as a dangerous good under transport regulations. |
15. Regulatory information
| U.S. TSCA | Complies. |
| SARA 313 | This product does not contain any chemicals subject to the reporting requirements of the Act and Title 40 of the Code of Federal Regulations, Part 372. |
16. Other information
| NFPA hazard codes | Health 1 · Flammability 1 · Reactivity 0 |
| HMIS III rating | Health 1 · Flammability 1 · Physical hazard 0 |
| Issue date / revision | 10-26-2026 · Revision 1.0, first issue. |
| Prepared by | COEX LLC |
This data is based on the current state of our information and experience.
www.coex3d.com
Disclaimer: The safety data contained on this data sheet is furnished without charge or obligation and accepted at the recipient's sole risk. This data describes our product in terms of safety requirements. The data provided is not applicable as a warranty of product properties. It is the responsibility of the recipient to observe the existing legal regulations for the use of this product.
| Spools | Discount |
|---|---|
| 6+ | 5% off |
| 12+ | 10% off |
| 24+ | 15% off |