PETG balances strength, chemical tolerance, low warpage and straightforward processing. It is often the rational first choice for housings, guards, brackets and prototypes that do not need outdoor-grade UV stability or high-temperature performance.
Material family names are not specifications. This page anchors the discussion to a named commercial grade and published printed-specimen data, then translates that data into practical selection and design guidance.
PETG balances strength, chemical tolerance, low warpage and straightforward processing. It is often the rational first choice for housings, guards, brackets and prototypes that do not need outdoor-grade UV stability or high-temperature performance.
Choose PETG when reliability, finish and cost matter more than maximum stiffness or heat resistance.
Orientation, conditioning and geometry can move finished-part performance materially. Use these figures to compare candidate materials—not as guaranteed minimums.
| Property | Representative value | Test / context |
|---|---|---|
| Density | 1.30 g/cm³ | ISO 1183 |
| Tensile strength · XY | 48.0 ± 4.9 MPa | ISO 527 |
| Tensile strength · Z | 45.7 ± 1.8 MPa | ISO 527 |
| Young’s modulus · XY | 2.31 ± 0.09 GPa | ISO 527 |
| Elongation at break · XY | 9.3 ± 6.6% | ISO 527 |
| HDT · 0.45 MPa | 69°C | ISO 75 |
| HDT · 1.8 MPa | 65°C | ISO 75 |
| Vicat softening | 75°C | ISO 306 |
XY values normally represent flat-printed specimens. Z-direction strength can be substantially lower. Final production settings should be qualified on representative geometry.
A useful material choice starts with load case, temperature, environment, duty cycle and failure consequence—not the strongest number on a datasheet.