3D Printing InfoWhere it is used
General-purpose nylon parts and, unusually, CoPA can support itself if the support is removed before it absorbs moisture
Nylon & composites · Material guide
PA6/66 copolymer blends
A PA6/66 copolymer that prints more easily than straight PA6. Polymaker publishes full dry and wet printed blocks for it: at 6.16 % moisture, tensile falls 78 to 34 MPa and modulus 2703 to…
Open in interactive comparisonUnderstand the material
At a glance
Before you print
- Setup difficulty
- Advanced — enclosure, hardware upgrades, tuning; must be kept below 20 % RH throughout
- Nozzle wear
- Non-abrasive when unfilled
Read the full material overview
A PA6/66 copolymer that prints more easily than straight PA6. Polymaker publishes full dry and wet printed blocks for it: at 6.16 % moisture, tensile falls 78 to 34 MPa and modulus 2703 to 724 MPa, while notched impact quadruples.
Applications
PA6/66 copolymers tune the nylon backbone to make useful mechanical parts easier to manufacture. For PolyMide CoPA, Polymaker describes slower crystallization as the reason for reduced warping during printing, while preserving a balance of nylon toughness, strength and thermal behavior. The engineering benefit is obtaining a complex functional nylon part without fighting the same shrinkage behavior as an untuned formulation.
Reduced warping during manufacture does not mean stable properties at every service humidity. CoPA loses substantial stiffness and strength after water conditioning while becoming more resistant to notched impact. A positioning bracket and an impact-contact part therefore benefit from different aspects of the same polymer. Printed direction, conditioning and timely support removal matter, and its Vicat softening figure must not be mistaken for heat resistance under load.
TJU TR21 inserts and wing ribs ↗
FDM · PolyMide CoPA nylon-6/6,6 filament · Documented case
Polymaker identifies CoPA in Tongji’s TR21 monocoque inserts and front-wing ribs.
Sources
- PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) · 2024-11 · tds
- AmideX Nylon 6-66 — product page · 2026-08 · vendor
- Max volumetric speed · 2026-08 · doc
- Moisture Conditioning — effect on printed nylon properties · 2026-08 · doc
Find printable models
Check the model’s material and process notes before choosing a filament.
Plan your printer setup
All print settings ↓Printing quick reference
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
Nozzle temperature (°C)
250–270 (Polymaker CoPA)
Full value & sources
250–270 (Polymaker CoPA)
Bed temperature (°C)
25–50 (Polymaker CoPA)
Full value & sources
25–50 (Polymaker CoPA)
Enclosure
Enclosure required (passive)
Full value & sources
Enclosure required (passive) — Polymaker specifies a chamber at ambient temperature
Drying
100 °C for 8 h (Polymaker CoPA)
Full value & sources
100 °C for 8 h (Polymaker CoPA)
Go deeper when you need to
49 documented fieldsProperties & source data
Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
Material & market7 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | PA6/66 copolymer — a nylon alloy that lowers the melting point and improves printability against straight PA6 | 2 sources
|
| Density (g/cm³) | 1.12 (ISO 1183, Polymaker CoPA) | 1 source |
| Typical price (USD/kg) | 1 kg-equivalent spools cluster near 65 | 3 sources
|
| Price range across brands (USD/kg) | 62–113 across brands; add:north Adura 62, PrimaCreator NylonPower PA6/66 65 at 500 g, Polymaker CoPA 67, 3DXTech AmideX Nylon 6-66 113 | 4 sources
|
| Market availability (1–5) | Available from several mainstream brands | 2 sources
|
| Spool sizes & diameters | 1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools | 4 sources
|
| Typical applications | General-purpose nylon parts and, unusually, CoPA can support itself if the support is removed before it absorbs moisture | 1 source |
Print settings5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle temperature (°C) | 250–270 (Polymaker CoPA) | 1 source |
| Bed temperature (°C) | 25–50 (Polymaker CoPA) | 1 source |
| Enclosure / chamber requirement (1–5) | Enclosure required (passive) — Polymaker specifies a chamber at ambient temperature | 1 source |
| Maximum volumetric flow (mm³/s; see test conditions) (mm³/s) | 16 at Polymaker's 200 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer | 2 sources
|
| Overall printing difficulty (1–5) | Advanced — enclosure, hardware upgrades, tuning; must be kept below 20 % RH throughout | 2 sources
|
Nozzle wear & reliability3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle hardness required (1–4) | Brass fine indefinitely for unfilled grades | 1 source
|
| Abrasiveness (1–5) | Non-abrasive when unfilled | 1 source
|
| Nozzle clog risk (1–5) | Very high — frequent jams without careful setup | 2 sources
|
Moisture & drying6 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Moisture absorption (hygroscopicity) (1–5) | Very high (>2 %) — Polymaker's own wet-state specimens reached 6.16 % moisture content after 48 h immersion at 60 °C | 2 sources
|
| Drying temperature & time | 100 °C for 8 h (Polymaker CoPA) | 1 source |
| Symptoms when wet | Popping and cracking during extrusion, then hard-to-diagnose defects | 1 source
|
| Effect of moisture on strength | Measured dry against wet on printed specimens at 6.16 % moisture (Polymaker CoPA): tensile 78.0 → 34.3 MPa, Young's modulus 2703 → 724 MPa, flexural strength 109.8 → 22.6 MPa, while notched Charpy rises 6.9 → 27.7 kJ/m² and elongation 12.7 → 13.2 % | 2 sources
|
| Storage requirement | Polymaker states CoPA must always be stored and used below 20 % relative humidity | 1 source |
| Hydrolysis at melt temperature | Polymaker requires a 100 °C dry for 8 h and storage below 20 % RH; no molecular-weight loss figure is published, and the published wet data is conditioning rather than melt hydrolysis | 2 sources
|
Strength & mechanical properties12 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 78.0 ± 0.7 printed XY dry and 34.3 ± 2.5 wet, ISO 527 (Polymaker CoPA) | 1 source |
| Young's modulus (MPa) | 2703 ± 259 printed XY dry and 724 ± 61 wet, ISO 527 (Polymaker CoPA) | 1 source |
| Elongation at break (%) | 12.7 ± 2.1 printed XY dry and 13.2 ± 2.3 wet, ISO 527 (Polymaker CoPA) | 1 source |
| Flexural strength (MPa) | 109.8 ± 1.3 printed XY dry and 22.6 ± 0.5 wet, ISO 178 (Polymaker CoPA) | 1 source |
| Flexural modulus (MPa) | 2510 ± 25 printed XY dry and 636 ± 11 wet, ISO 178 (Polymaker CoPA) | 1 source |
| Charpy impact, notched (kJ/m²) | 6.9 ± 1.4 printed XY dry and 27.7 ± 1.2 wet, ISO 179 notched (Polymaker CoPA) — impact quadruples when conditioned | 1 source |
| Layer adhesion / Z tensile (MPa) | 45.8 ± 1.5 printed Z dry, falling to 13.7 ± 1.2 wet, ISO 527 (Polymaker CoPA) | 1 source |
| Brittleness (1–5) | Tough — absorbs impact, yields before breaking | 1 source |
| Hardness (scale-specific) (Shore A / Shore D / Rockwell) | Shore D 86 and Rockwell 85 (108) — the source does not name the scales on extruded unfilled PA66 stock (ASTM D2240, D785) | 1 source
|
| Fatigue / repeated-flex resistance (1–5) | Excellent — living hinges viable | 1 source
|
| Elasticity / flexibility (1–5) | Semi-flexible | 1 source
|
| Z strength as % of XY (%) | 59 dry (45.8 Z against 78.0 XY) and 40 wet, printed | 1 source |
Heat & temperature6 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 111 (ISO 75, 0.45 MPa, Polymaker CoPA) | 1 source |
| HDT at 1.8 MPa (°C) | 70 (ISO 75, 1.8 MPa, Polymaker CoPA) | 1 source |
| Glass transition (Tg) (°C) | 66 (DSC, Polymaker CoPA) | 1 source |
| Melting point / Vicat (°C) | 189 melting (DSC); Vicat 180, crystallisation 148, decomposition 370 (Polymaker CoPA) | 1 source |
| Annealing response | 80 °C for 6 h (Polymaker CoPA) | 1 source |
| Thermal expansion (CTE) (µm/m·K) | 81.0 on extruded unfilled PA66 stock (ASTM D696; source states 4.5e-5 in/in/°F) — the same chemistry as a PA6/66 copolymer | 1 source
|
Weather & chemical resistance1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Water / humidity resistance in service (1–5) | Absorbs water, properties shift — 6.16 % uptake cost 56 % of tensile strength and 73 % of modulus | 1 source |
Health & safety5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Fume toxicity (1–5) | Moderate — measurable VOCs and UFPs, ventilation advised | |
| VOC emission rate (µg/min) | Up to 180 caprolactam, the dominant VOC from nylon; total VOC reached nearly 200 µg/min, the highest of the nine filaments tested | |
| Ultrafine-particle emission rate (particles/min) | ≈2 × 10⁸ median — low for ultrafine particles despite the highest VOC mass of any filament tested | |
| Hazardous species emitted | Caprolactam, at up to 180 µg/min from nylon filament — the largest single-VOC emission rate measured in the study | |
| Ventilation / filtration requirement (1–5) | Ventilated room or enclosure recommended |
Finishing & post-processing1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Support material pairing | CoPA can support itself, but Polymaker warns the support bonds permanently if it absorbs moisture before removal | 1 source |
Solvents & solubility3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Dissolved at 23 °C by formic acid above ~50 %, phenol, m-cresol, 96 % sulphuric acid or hexafluoroisopropanol — laboratory reagents. | 1 source |
| Softened or crazed by | Zinc chloride solutions stress-crack it — 10 % marginal, 37 % not resistant; alcoholic calcium chloride dissolves it. | 1 source |
| Solvent welding & smoothing agent | None — nylon's only solvents are formic acid, phenol and HFIP, all of which degrade the part they wet. | 1 source |
How to read these values
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Find a specific filament
4 listingsProduct listings and datasheets
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
Browse 4 products from 4 brands
add:northAdura62.00 USD/kg
$62.00 / 1 kg spool (1.75 mm, Black), add:north USD list price, addnorth.com, Aug 2026
Co-polyamide chosen for low shrinkage. The data sheet does not state whether the specimens were printed or moulded. add:north sells an FDA-compliant clear variant, Adura FDA, carrying the same figures.
Open product listing ↗- add:north Adura product page · 2026-08 · vendor
- Adura Technical Data Sheet (rev 1.1) · 2026-08 · tds
| Density (g/cm³) | 1.1 (add:north data sheet) |
|
|---|---|---|
| Nozzle temperature (°C) | 245–270 |
|
| Bed temperature (°C) | 50 or above |
|
| Tensile strength (XY) (MPa) | 50 at break (ISO 527; specimen type not stated) |
|
| Young's modulus (MPa) | 1720 (ISO 527) |
|
| Elongation at break (%) | 46 at break (ISO 527) |
|
| Flexural strength (MPa) | 52 (ISO 178) |
|
| Flexural modulus (MPa) | 1425 (ISO 178) |
|
| HDT at 0.45 MPa (°C) | 105 at 0.45 MPa (ISO 75) |
|
| Glass transition (Tg) (°C) | 51 (DSC) |
|
| Continuous service temperature (°C) | 110 (add:north product data) |
|
PrimaCreatorSELECT NylonPower PA6/6664.58 USD/kg
EUR 29.90 / 500 g spool = EUR 59.80/kg ≈ $64.58/kg at 1.08 USD/EUR (1.75 mm, Black), primacreator.com, Aug 2026
PA6/PA66 co-polymer sold in 500 g spools, printable at lower temperatures than either homopolymer. PrimaCreator publishes no mechanical data for this grade: the spec table on its page is the SELECT NylonPower Glass Fiber block (Nylon 12 + 16 % glass) pasted in, so none of those numbers describe this filament.
Open product listing ↗- PrimaCreator SELECT NylonPower PA6/66 product page · 2026-08 · vendor
| Spool sizes & diameters | 1.75 mm and 2.85 mm, 500 g |
|
|---|---|---|
| Bed temperature (°C) | 60–80, Magigoo PA recommended |
|
| Drying temperature & time | 70–80 °C for 4–8 h; longer gives a visibly better print |
|
PolymakerPolyMide CoPA66.65 USD/kg
$49.99 / 0.75 kg spool = $66.65/kg, Polymaker product catalogue, Aug 2026
Handle polymide-copa. The only filament TDS found that publishes full printed dry and wet mechanical blocks.
Open product listing ↗- Polymaker PolyMide CoPA product page · 2026-08 · vendor
- PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) · 2024-11 · tds
| Density (g/cm³) | 1.12 (ISO 1183) | |
|---|---|---|
| Nozzle temperature (°C) | 250–270 | |
| Bed temperature (°C) | 25–50 | |
| Equilibrium moisture content at ~50 % RH (%) | 2.82 equilibrium water absorption | |
| Tensile strength (XY) (MPa) | 78.0 ± 0.7 dry, 34.3 ± 2.5 wet (printed XY, ISO 527) | |
| Young's modulus (MPa) | 2703 ± 259 dry, 724 ± 61 wet (printed XY, ISO 527) | |
| Elongation at break (%) | 12.7 ± 2.1 dry (printed XY, ISO 527); Z 1.3 | |
| Flexural strength (MPa) | 109.8 ± 1.3 dry (printed XY, ISO 178) | |
| Flexural modulus (MPa) | 2510 ± 25 dry (printed XY, ISO 178) | |
| Charpy impact, notched (kJ/m²) | 6.9 ± 1.4 dry, 27.7 ± 1.2 wet (printed XY, ISO 179, notched) | |
| Layer adhesion / Z tensile (MPa) | 45.8 ± 1.5 dry (printed Z, ISO 527); 13.7 wet | |
| Z strength as % of XY (%) | 59 (printed Z 45.8 vs XY 78.0 dry, ISO 527) | |
| HDT at 0.45 MPa (°C) | 111 (ISO 75, 0.45 MPa) | |
| HDT at 1.8 MPa (°C) | 70 (ISO 75, 1.8 MPa) | |
| Glass transition (Tg) (°C) | 66 (DSC) | |
| Melting point / Vicat (°C) | 189 melting (DSC); Vicat 180 (ISO 306) |
3DXTechAmideX Nylon 6-66113.33 USD/kg
$85.00 / 750 g spool = $113.33/kg, 3dxtech.com product catalogue, Aug 2026
Handle amidex-nylon-6-67. TDS specimens printed XY flat on a Gearbox HT2 at 270 °C nozzle / 80 °C bed. The product page and the TDS disagree on tensile strength (60 vs 55 MPa) and Tg (85 vs 76 °C).
Open product listing ↗- AmideX Nylon 6-66 — product page · 2026-08 · vendor
- AmideX PA6 Copolymer 3D Printing Filament — Technical Data Sheet Rev 1.0 · 2026-08 · tds
| Density (g/cm³) | 1.12 (ISO 1183) | |
|---|---|---|
| Spool sizes & diameters | 1.75 mm or 2.85 mm, 750 g |
|
| Nozzle temperature (°C) | 255–275 |
|
| Bed temperature (°C) | 60–70 |
|
| Drying temperature & time | 90 °C for 4 h |
|
| Tensile strength (XY) (MPa) | 55 at break (printed XY, ISO 527); the product page states 60 |
|
| Young's modulus (MPa) | 1980 (printed XY, ISO 527) | |
| Elongation at break (%) | 100 at break (printed XY, ISO 527) | |
| Flexural strength (MPa) | 76 (printed XY, ISO 178) | |
| Flexural modulus (MPa) | 2050 (printed XY, ISO 178) | |
| HDT at 0.45 MPa (°C) | 140 (ISO 75, 0.45 MPa) | |
| Glass transition (Tg) (°C) | 76 (TDS, DSC); the product page states 85 |
|
| Melting point / Vicat (°C) | 200 melting point (product page) |
|
| Electrical & ESD properties | Surface resistance >10^13 Ω/sq (ASTM D257) |
Material selection articles
Compare specific grades and connect test results to part design.