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Polymaker PolyMide CoPA
Copolyamide (PA6/66 blend)FilamentFDMPolymaker
Quick answer
PolyMide CoPA is Polymaker's copolyamide filament, blended for easier printing: 78.0 MPa tensile strength, 2703 MPa modulus and 12.7% elongation at break in XY per its TDS — less stiff than PA6-CF, but far more ductile, less warp-prone, and printable at 250–270 °C.
CoPA is a copolymer of PA6 and PA66 formulated to fix the two complaints about straight nylon filament: warping and brittleness. It gives up the extreme stiffness of carbon-filled PA6 in exchange for 12.7% elongation and a friendlier printing window — the "nylon for people who found PA6-CF too much" option.
Its XY/Z split also teaches the standard FDM lesson in reverse: elongation is 12.7% within layers but only 1.3% across them — interlayer ductility, not strength, is the first thing FDM nylon loses.
Properties (manufacturer datasheet)
| Property | Value | Test method / note |
|---|---|---|
| Tensile strength (X-Y) | 78.0 MPa | ISO 527, ±0.7; Z: 45.8 MPa |
| Young's modulus (X-Y) | 2703 MPa | ISO 527, ±259; Z: 2209 MPa |
| Elongation at break (X-Y) | 12.7% | ISO 527, ±2.1; Z: 1.3% |
| HDT @ 1.8 MPa | 70 °C | ISO 75; @ 0.45 MPa: 111 °C |
| Density | 1.12 g/cm³ | ISO 1183 at 23 °C |
| Nozzle temperature | 250–270 °C | Manufacturer recommendation |
| Drying | 100 °C for 8 h | TDS drying setting |
Values are reproduced from the manufacturer source(s) listed below, exactly as published. Properties the manufacturer does not publish are omitted rather than estimated — see the sourcing policy.
Processing notes
- Nozzle temperature 250–270 °C per the TDS (v5.4).
- Drying setting in the TDS: 100 °C for 8 h.
- Polymaker rates heat resistance up to 180 °C (Vicat), but the load-bearing HDT figures are 111 °C at 0.45 MPa and 70 °C at 1.8 MPa — design to the HDT, not the headline.
Typical applications
- Functional parts needing nylon toughness without composite stiffness
- Living hinges and clips in FDM (within interlayer limits)
- Wear parts, guides and low-friction components
- Prototypes that will later be produced in powder-bed nylon
Frequently asked questions
CoPA or PA6-CF?
PA6-CF when stiffness and heat resistance are the priority (8636 MPa modulus, 173 °C HDT at 1.8 MPa) and the part does not need to flex. CoPA when the part must bend, snap or survive handling, and for easier printing on less specialised machines.
Does CoPA warp less than other nylons?
That is its design goal: the copolyamide blend has lower crystallisation-driven shrinkage than straight PA6. It still needs an enclosure-friendly setup and dry filament — easier is not the same as effortless.
What does CoPA stand for?
Copolyamide — a polymer combining PA6 and PA66 building blocks in one chain, blending PA6 toughness with PA66 heat behaviour.
Last updated: November 2026