Any idea which thermoplastics are used on car-engines? Seems like most are PA (Nylon) but are there any other?
Iam trying PC (which has 118°C rating in the datasheet).
How long will it last?
The coverings are usually a glass filled Nylon. Normal nylon like we print wouldn’t be able to withstand the temperatures.
@ThantiK yes thats why I asked. Any ideas if that PC would withstand the head like on a valvecover?
Like so
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PC should be fine for that.
PC-ABS is really common for under-hood components like air intake parts. Composite fill (glass or CF) doesn’t change the melt point but it helps prevent creep at higher temps.
Yes, PC is a good option, but note that modern “easy printing” PC blends like ePC don’t have anywhere near the temp resistance of virgin PC. (I’ve tested ePC at ~120C Tg vs virgin PC and 150C Tg.) A high glass point directly causes increased warping, so filament manufacturers often deliberately drop the heat resistance to get easier printing.