Mechanical properties of Markforged® feedstock filaments (data are from the Markforged website, accessed on 19 September 2025)
| Properties | Onyx | Glass fiber | Kevlar fiber | Carbon fiber |
|---|---|---|---|---|
| Tensile modulus (GPa) | 2.4 | 21 | 27 | 60 |
| Tensile strength (MPa) | 40 | 590 | 610 | 800 |
| Compressive modulus (GPa) | – | 24 | 25 | 62 |
| Compressive strength (MPa) | – | 180 | 130 | 420 |
| Properties | Onyx | Glass fiber | Kevlar fiber | Carbon fiber |
|---|---|---|---|---|
| Tensile modulus (GPa) | 2.4 | 21 | 27 | 60 |
| Tensile strength (MPa) | 40 | 590 | 610 | 800 |
| Compressive modulus (GPa) | – | 24 | 25 | 62 |
| Compressive strength (MPa) | – | 180 | 130 | 420 |
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