PA 6Polyamide 6

Polyamide 6 (PA 6) is the best known extruded polyamide and offers a combination of all typical polyamide material properties. Compared to the cast varieties however, this variety displays higher water absorption, is less wear resistant and has less dimensional stability. Furthermore, because of the manufacturing process, only a limited size range and unit weight can be produced. This restricts the design possibilities of the user.

Main properties:

  • Good mechanical stability
  • High impact resistance
  • Good damping properties

Typical applications are:

  • Gears and sprockets
  • Hammer heads
  • Impact and shock resistant components

PA 66Polyamide 66

PA 66 is used in smaller dimensioned applications and offers higher rigidity and wear resistance compared to PA 6. Compared to the cast varieties, this material also has higher water absorption. Regarding the other properties, PA 66 is comparable to the standard cast type PA 6 G, however it is much more costly.

As in the case of PA 6, the manufacturing process limits the size and unit weight which can be produced, and this restricts the design possibilities of the user. Therefore PA 66 in practical application is replaced to a large extent by the more economical PA 6 G, which can also be produced in almost unlimited sizes.

Main properties:

  • Good mechanical stability
  • High impact resistance
  • Good damping properties
  • Good wear resistance

Typical applications are:

  • Friction bearings
  • Slide plates
  • Gears and sprockets

POMPolyacetal

Polyacetal is a high crystalline thermoplastic with a high level of stability and rigidity as well as good sliding properties and wear resistance with a low level of moisture absorption. Its good dimensional stability, exceptional fatigue resistance and excellent machining properties make Polyacetal a versatile design material also for complex components. It satisfies high surface finish requirements.

There is a difference between homopolymers (POM-H) and copolymers (POM-C), whereby the homopolymers have a somewhat higher degree of density, hardness and stability. Copolymers, however, have a higher impact toughness, greater wear resistance and thermal / chemical resistance.

The Polyacetal semi-finished products that we offer – from which we also manufacture finished products – are produced from POM-C in an extrusion process.

Main properties:

  • High stability
  • High rigidity
  • High hardness
  • Good impact resistance, also at low temperatures
  • Low level of moisture absorption (at saturation 0.8 %)
  • Good creep resistance
  • High dimensional stability
  • Physiologically safe

Typical applications are:

  • Federelemente
  • Spring elements
  • Bushes
  • Gears
  • Sliding elements
  • Insulators
  • Pump components
  • Casing parts
  • Valves and valve bodies
  • Counter parts
  • Precision parts

PETPolyethylenterephthalate

The molecular structure of polyethyleneterephthalate can be produced either as an amorphous or semi-crystalline thermoplastic. The amorphous type is crystal clear with lower mechanical stability and inferior sliding properties. The semi-crystalline types, on the other hand, have a high level of hardness, rigidity and stability with excellent sliding properties and low sliding abrasion.

Because of its good creep resistance, low level of moisture absorption and excellent dimensional stability, the material is ideally suited for complex parts with the highest demands on dimensional stability and surface finish. For the reasons mentioned above, only the semi-crystalline type is suitable for sliding applications.

The wear resistance and sliding properties of PET-GL have been improved compared to pure PET by adding a special, homogeneously distributed solid lubricating agent.

The polyethylene terephthalate semi-finished products that we offer – and from which we also manufacture all finished products – are manufactured from semi-crystalline types in an extrusion process.

Main properties:

  • High stability
  • High rigidity
  • High hardness
  • Low moisture absorption (at saturation 0.5 %)
  • Very good creep resistance
  • Very high dimensional stability
  • Constantly low sliding friction
  • Very little sliding abrasion

Typical applications are:

  • Ratchet wheels
  • Bushes
  • Gearwheels
  • Sliding elements
  • Insulators
  • Casing parts
  • Counter components
  • Precision bearings
  • Cam disks

PEEKPolyetheretherketone

Polyetheretherketone is a semi-crystalline thermoplastic with excellent sliding properties, very good mechanical properties, even under thermal load and has excellent resistance to chemicals. The high continuous working temperature rounds out the profile of this high-performance plastic and makes it a virtually universally useable design material for highly stressed parts.

The polyetheretherketone semi-finished products that we offer – from which we also manufacture finished parts – are produced in extrusion or press processes.

Main properties:

  • High continuous working temperature (+ 250 °C in air)
  • High mechanical strength
  • High rigidity
  • High creep resistance, also at high temperatures
  • Good sliding properties
  • High wear resistance
  • High dimensional stability
  • Excellent chemical resistance
  • Hydrolysis resistant
  • Good electrical insulator
  • Radiation resistant
  • Physiologically safe
  • Fire resistant (UL 94 V 0)

Typical applications are:

  • Gears
  • Friction bearings
  • Spools
  • Fittings (e.g. housings for hot water meters)
  • Valves
  • Piston rings
  • Parts for car engines (e.g. bearing cages)