PET (Polyethylene Terephthalate) vs PETG (Polyethylene Terephthalate Glycol)
Property comparison of PET (Polyethylene Terephthalate) and PETG (Polyethylene Terephthalate Glycol), both polymer.
| Property | PET (Polyethylene Terephthalate) | PETG (Polyethylene Terephthalate Glycol) | Difference |
|---|---|---|---|
| Tensile strength | 55 MPa | 50 MPa | -9% |
| Elongation | 30 % | 140 % | +367% |
| Poisson ratio | 0.38 | 0.38 | 0% |
| Density | 1,370 kg/m³ | 1,270 kg/m³ | -7% |
| Thermal conductivity | 0.24 W/m·K | 0.2 W/m·K | -17% |
| Specific heat | 1,170 J/kg·K | 1,200 J/kg·K | +3% |
| Coefficient of thermal expansion | 0.00006 1/K | 0.000065 1/K | +8% |
Difference is PETG (Polyethylene Terephthalate Glycol) relative to PET (Polyethylene Terephthalate). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
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