Is there any engineering plastic which has high steel and impact load carrying capacity mechanical properties equal to those of aluminum or steel?
The answer strongly depends on the form of structural component.
Three main types of reinforced plastics can be considered. Firstly, the thermoplastic, chaotically reinforced by short fibers (see PA40). The ultimate strength is about 50..70 MPa. Secondly, the fiberglass with UT up to 1 GPA in fibers' direction and 40 GPA ILS. Thirdly, the carbon reinforced composite with UT up to 3 GPA in the reinforcement direction.
The second and third types are good for panels. The first type is suitable for complex forms and could be used for molding-type technology with relative complex shapes of elements.
Yes. Use fiberglass for panels and PA40 for molded parts. These materials are even less expensive than aluminium alloys.
Hallo, in my database I've found the mechanical properties of PE80 and PE100. The difference to PE40 is somewhat higher E-Modulus of PE80 (~10..15%) and ultimate stress (PE80 is ~15% higher).
The best reference on this issue for the first estimations is the SAE BOSCH AUTOMOTIVE HANDBOOK:
http://books.sae.org/bosch8/
I have only the german one. Please translate with Google Translator.
I recommend strongly the BOSCH SAE Handbook.
It is better you can go for plastic composites, instead of pure plastics.
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