30% glass fibre greatly increases stiffness and dimensional stability for heavily loaded structural parts.
Glass-Filled PEI is a Glass-Filled grade within PEI (Ultem), widely used in industrial CNC machining due to its balanced mechanical, thermal, and machinability performance.
30% glass fiber reinforced, with significantly improved rigidity and dimensional stability, suitable for high-load structural parts.
Glass-Filled PEI grades are commonly used in the following fields and scenarios; our CNC machining services can provide custom parts for these industries.
Glass-Filled PEI demonstrates the following core advantages in CNC machining and end-use applications.
The following are key process points when machining PEI (Ultem) material, to ensure part quality and machining efficiency.
PEI is highly hygroscopic; dry at 150°C for at least 4 hours before machining to prevent hydrolysis-induced bubbles and surface defects.
Use sharp carbide tools; PEI is heat-sensitive, so avoid excessive cutting zone temperatures that cause surface discoloration.
Perform post-machining stress-relief annealing to eliminate residual stresses and prevent cracking during assembly or service.
Polishing or vibratory tumbling yields a uniform smooth surface; avoid contact with ketone and halogenated hydrocarbon solvents.
Besides Glass Filled PEI, PEI (Ultem) offers several other grades with different characteristics. Click to view details.
Send your STEP / DWG / PDF drawing and get a detailed quote with free DFM analysis and process recommendations within 2 hours. No minimum order — from 1 piece.
