High-Temperature Performance
PEEK and PEI (Ultem) are leading high-temperature engineering plastics.
Key Differences
| Property | PEEK | PEI |
|---|---|---|
| Continuous Use Temp | 250°C | 170°C |
| Chemical Resistance | Excellent | Good |
| Cost | $150-300/kg | $30-60/kg |
FAQ
When is PEEK vs PEI — High-Temperature Engineering Plastics Compared a good option?
PEEK vs PEI — High-Temperature Engineering Plastics Compared is a good option when fast iteration, complex geometry, low tooling cost, or low-volume production is more important than molded-part unit cost.
What should be checked before choosing PEEK vs PEI — High-Temperature Engineering Plastics Compared?
Check part size, material properties, surface finish, dimensional tolerance, heat exposure, load direction, and whether post-processing is required.
How does PEEK vs PEI — High-Temperature Engineering Plastics Compared compare with CNC machining?
3D printing can create complex shapes quickly, while CNC machining is often stronger for precise surfaces, tighter tolerances, and production-grade materials.
What affects the cost of PEEK vs PEI — High-Temperature Engineering Plastics Compared?
Cost depends on material, build volume, print time, layer height, support removal, finishing, inspection, and the number of parts in the build.
PEEK vs PEI — Frequently Asked Questions
Is PEEK stronger than PEI?
At room temperature, PEI has higher tensile strength. PEEK maintains properties better at elevated temperatures.
Where can I source PEEK and PEI materials?
Nylonplastic supplies both materials in rod, sheet, and tube forms.
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