Table 2.
Comparison between the physical properties of as-received and printed PETG.
| Material | Printing Temperature °C | Density (g/cm3) | Porosity content * (%) | Young’s Modulus (MPa) | Tensile Strength (MPa) |
Elongation at Break (%) | Fracture Toughness MPa × m1/2 |
|---|---|---|---|---|---|---|---|
| as-received | - | 1.26–1.28 | 0 | 791 ± 91 | 54.3 ± 1.3 | 400 ± 220 | 2.11–2.54 |
| printed | 240 | 1.03 ± 0.01 | 19 ± 0.9 | 491 ± 13 | 32.3 ± 3.2 | 8.8 ± 0.2 | 1.81 ± 0.01 |
| 250 | 1.07 ± 0.02 | 16 ± 1.6 | 478 ± 51 | 34.0 ± 3.3 | 11.7 ± 2.0 | 2.09 ± 0.01 |
* based on density measurements.