Properties
Indicative values | PEEK |
|---|
| Continuous service temp. | 250 °C |
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| Melt temperature | 360–400 °C |
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| Mould temperature | 170–200 °C |
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| Minimum wall | 0,5 mm |
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| Moisture uptake | ≈ 0,5 % |
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| Chemical resistance | very high |
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| Coefficient of friction | low |
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| Dielectric performance | good |
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| Flammability | self-extinguishing, no additives |
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| Relative material cost | very high |
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Grades
Grade choice changes the process window, tool wear and shrinkage — more often than the choice of polymer family does.
| Grade | Filler | |
|---|
| PEEK | unfilled | Highest toughness and elongation. The choice where the part has to flex. |
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| PEEK GF30 | 30 % glass fibre | Higher stiffness and dimensional stability, lower toughness. Anisotropic shrinkage. |
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| PEEK CF30 | 30 % carbon fibre | Highest stiffness, thermal conductivity and lowest friction. Abrasive to the tool. |
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Achievable tolerances
Nominal size bands to DIN 16742. Tolerances on critical features are agreed individually, after DFM and flow simulation.
| Nominal size | Tolerance |
|---|
| ≤ 25 mm | ±0,05 mm |
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| 25 – 100 mm | ±0,10 mm |
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| 100 – 200 mm | ±0,15 mm |
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| > 200 mm | ±0,25 mm |
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Applications
| Industry | Example |
|---|
| Automotive | Under-bonnet parts, metal replacement |
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| Gas | Media-resistant sealing components |
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| Machinery | Dry-running bearings and slides |
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