Natural Copolymer
PET (old name: PETP) is a partly crystalline thermoplastic Polyester based on Polyethylene-Terephthalate. PET features outstanding dimensional stability, as it is virtually unaffected by ambient moisture.
A low coefficient of friction and excellent wear resistance combined with low creep and high modulus make this the choice material for moving parts. Hot water resistance is low but it has better resistance to acids than Nylon or Acetal.
PET is produced without centreline porosity and is approved for contact with food (BfR, FDA). As it is more rigid than other thermoplastics, please consult our machining guidelines.
Key features
- For parts with especially high demand on precision.
Some industries using PET Natural Copolymer
- Automotive
- Electric
- Electronic and semiconductor
- Food processing
- Medical
- Logistics and transport
- Pharmaceutical
- Printing
Applications for use include
- Bushings and bearings
- Cams
- Electrical insulators
- Feeder blocks
- Filter tracks
- Food piston pumps
- Fuel pump components
- Fuel system connectors and rotors
- Gears
- Hamburger and nugget dies
- Liquid and gas proof parts
- Locating disks
- Mandrels
- Manifolds
- Wear strips
- Valves and valve bodies
- Timing screws
Properties
Property |
Unit of measure |
Value |
Tensile Strength | Mpa | 80 |
Elongation at Break | % | 20 |
Modulus of Elasticity | MPa | 3200 |
Impact Strength | kj/m² | 2 |
Compressive Strength | MPa | 100 |
Shear Strength | MPa | |
Shore Hardness | D Scale | 81 |
Co-efficient of Friction | μ | 0.25 |
Water Absorption @ 23 Deg C | % | 0.5 |
Service Temperature Intermittent | ᵒC | 170 |
Service Temperature Continuous | ᵒC | 110 |
Melting point | ᵒC | 255 |
Thermal Conductivity | W/m.ᵒC | 0.29 |
Dielectric Strength | kV/mm | 22 |
Volume Resistivity | Ω.cm | 10¹³ |
Surface Resistivity | Ω | 10¹⁴ |
Arc Resistance | Sec | |