PEEK gets the attention, but most high-temperature applications are served just as well by PEI, PPS, PPA or PPSU at a better cost. Choosing the grade is an engineering decision; we make it on data, not on habit.
| Material | Key properties | Where it fits |
|---|---|---|
| PEEK | 260 °C continuous use, self-lubricating and wear resistant; carbon- or glass-fibre reinforced grades available. | Our main material, with a dedicated process database. |
| PEI / Ultem | High strength and high dielectric strength, inherently flame retardant. | Aerospace cable supports, precision structural parts. |
| PPS | Chemical resistant, excellent dimensional stability, low water absorption. | EV power connectors, sensor housings. |
| PPA | High-temperature polyamide, good strength above 150 °C. | Automotive under-hood and e-mobility parts. |
| PPSU | Hydrolysis resistant, steam-sterilizable, high impact. | Medical devices, water-treatment components. |
| PSU / PES | Transparent high-temperature sulfones with good hydrolytic stability. | Sterilizable housings, fluid-handling parts. |
| LCP | Very low shrinkage and excellent high-frequency performance. | 5G and semiconductor connectors. |
| PTFE / PCTFE | Extreme chemical inertness and low friction. | Corrosive-media and sealing components. |
| PPO / PBI | Dimensionally stable engineering blends; PBI for the highest temperature duty. | Supporting grades for demanding thermal environments. |
Every high-temperature resin here is hygroscopic. Drying is specified per grade and verified, not guessed.
Oil temperature control with mold-face uniformity within ±2 °C, on independent circuits for core and cavity.
High-temperature melts release aggressive compounds. We specify corrosion-resistant steel and surface treatment as standard.
For each project we evaluate the international brand grade and a domestic alternative in parallel, and we tell you what the difference actually buys:
Send STEP / UG / STP files by email or WeChat — you get material analysis, gating proposal, cycle estimate and mold price in one reply.
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