PK
Polyketone
PK (polyketon) is a relatively new technical plastic with excellent chemical resistance, high abrasion resistance and good mechanical strength. The material can replace PA and POM in demanding applications where chemical resistance and low water absorption are important. PK has naturally low friction and good dimensional stability in humid environments. A unique property of PK is that it is manufactured using CO as a raw material, which makes it a more environmentally friendly alternative. The material is easily processed with conventional tools.
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Products 1,24 g/cm³
Density -40 to +110 °C
Temperature Machining
Properties
Chemical resistance
Resistant to fuels, oils, lubricants, and many solvents
Resistant to fuels, oils, lubricants, and many solvents
Wear resistance
Better abrasion resistance than PA and POM
Better abrasion resistance than PA and POM
Low friction
Naturally slippery surface
Naturally slippery surface
Low water absorption
Dimensionally stable in humid environments
Dimensionally stable in humid environments
Machinability
Easy to machine with conventional tools
Easy to machine with conventional tools
Environmentally friendly
Made from CO as a raw material
Made from CO as a raw material
Technical data
| Density | 1,24 g/cm³ |
| Tensile strength | 65-70 MPa |
| E-modulus | 1 400-1 600 MPa |
| Impact strength (Charpy) | No break |
| Water absorption | 0,2 % |
| Operating temperature | -40 to +110 °C |
Typical values. Actual properties may vary depending on the manufacturer and variant.
Applications
- Gears and bearings
- Automotive industry. Fuel systems
- Conveyors and controls
- Chemical process industry