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Description
Polyethylene terephthalate:
- PET has a high tensile and mechanical strength, which makes it a very tough material with a low coefficient of friction and high dimensional stability when compared to material alternatives. PET can be used at temperatures from -20°C to +115°C and is food compliant.
- Better resistance to acids than nylon and acetal
- High mechanical strength
- Very good creep resistance and dimensional stability
- Good resistance to radiation (Gamma & X-Ray)
- More dimensionally stable than Acetal
- Food compliant
- Mechanical Engineering
- Rollers
- Medical Industry
- Conveyor industry
- Gears
- Heavy loaded bearings
- Cams
- The data sheet tells us its around 30% stronger than acetal, its also around 25% more rigid. It not also has a better working temperature but its expansion rate is much lower. Expansion due to moisture absorption is also incredibly low, some 60% better than even Acetal.
- We’re told it machines much better than the Nylons and apparently comparable with Acetal, which we know is a big reason why Acetal is very popular.
- Yes this material has an FDA approval so its compatible with food contact applications
- PET rod will certainly outlast acetal in abrasive conditions and it’s at least as good if not better than nylon in some environments
- PET rod typically has a low friction and because it is a very hard engineering plastic, its is classed as being very slippery
- Firstly the size range is a bit limited for the time being with only 10, 16, 20, 25, 30, 40, 50 & 60mm diameters available and although black can be ordered from the factory on a special order, its white only for the moment.
- The other one is price, it’s around +40% more than acetal, its also not suitable for hot water applications which reach over sixty degrees centigrade
- It machines almost as well
- It’s over 30% stronger
- It’s around 25% more rigid
- 10 degrees better short term working temperature and 30 degrees better long term
- Has a 25% lower thermal expansion rate
- 60% less moisture absorption
- Has a similar coefficient of friction
- Has a much better wear resistance
- Is approx 40% more expensive
- PET machines much better than nylon
- A similar or better surface finish
- It’s 8% stronger
- Also 10% more rigid
- Has a 10 degree advantage for the short term working temperature
- With 50% lower thermal expansion rate
- Massive 10x (ten times) less moisture absorption
- Has a similar coefficient of friction
- As good if not better wear resistance
- Is approx 50% more expensive
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