PEEK (Unfilled) vs PET (Polyethylene Terephthalate)
Property comparison of PEEK (Unfilled) and PET (Polyethylene Terephthalate), both polymer.
| Property | PEEK (Unfilled) | PET (Polyethylene Terephthalate) | Difference |
|---|---|---|---|
| Tensile strength | 100 MPa | 55 MPa | -45% |
| Elongation | 35 % | 30 % | -14% |
| Elastic modulus | 3,600 MPa | 2,800 MPa | -22% |
| Poisson ratio | 0.4 | 0.38 | -5% |
| Density | 1,320 kg/m³ | 1,370 kg/m³ | +4% |
| Thermal conductivity | 0.25 W/m·K | 0.24 W/m·K | -4% |
| Specific heat | 1,340 J/kg·K | 1,170 J/kg·K | -13% |
| Coefficient of thermal expansion | 0.000047 1/K | 0.00006 1/K | +28% |
Difference is PET (Polyethylene Terephthalate) relative to PEEK (Unfilled). 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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