POM-C

POM – Polyacetal

POM-C

Copolymer is a semi-crystalline thermoplastic whose beneficial properties include a low coefficient of friction and good resistance to wear. The material is well suited to wet and damp-prone spaces, and it has excellent dimensional accuracy properties. The product has been approved for applications in which it comes into contact with food (it is Bar‑ and FDA‑compliant).

Physical properties
  Value Unit Test method
Specific gravity 1.41 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) 0.05/0.1 % DIN EN ISO 62
Weather-resistance moderate
Combustibility HB UL 94 DIN EN ISO 527-2
Food safety yes
Mechanical properties
  Value Unit Test method
Modulus of elasticity 2,800 MPa DIN EN ISO 527-2
Tensile strength 67 MPa DIN EN ISO 527-2
Elongation at break 9 % DIN EN ISO 527-2
Tensile strength at break 32 % DIN EN ISO 527-2
Flexural modulus 2,600 MPa DIN EN ISO 178
Flexural strength 91 MPa DIN EN ISO 178
Compressive modulus 2,300 MPa EN ISO 604
Compressive strength, 1%/2% 20/35 MPa EN ISO 604
Impact strength (Charpy) 150 kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) 6 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 165 MPa ISO 2039-1
Toughness (Shore D) N/A
Wear-resistance N/A
Coefficient of friction (against steel) N/A
Thermal properties
  Value Unit Test method
Glass-transition temperature -60 °C DIN 53765
Melting point 166 °C DIN 53765
Operating temperature (instantaneous) +140 °C
Operating temperature (continuous) 100 °C
Operating temperature (minimum) N/A
Thermal expansion coefficient, 23–60 °C 13 10-5 K-1 DIN EN ISO 11359-1;2
Thermal expansion coefficient, 23–100 °C 14 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity 1.4 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.39 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1014 DIN IEC 60093
Resistivity 1014 Ω×cm DIN IEC 60093
Dielectric strength 38 kV/mm DIN EN 60243-1
CTI value 600 V DIN EN 60112
Optical properties
  Value Unit Test method
Light transmittance N/A
Refractive index N/A
Optical errors N/A
Abrasion-resistance, 100 rotations with 500 g N/A

Additional downloads

Delivery selection sheets, bars, hollow bars
Specific gravity 1.41 g/cm3
Service temperature N/A … 100 °C
Price category €€ (€8–25/kg)

Special properties

  • low coefficient of friction
  • imperviousness to water absorption
  • extremely good dimensional accuracy
  • food-grade product
  • excellent machinability
  • wide range of use temperature
  • good mechanical strength, rigidity, and hardness

Applications

slide bearings exposed to humidity, bushings, valve seats, components for the food or electronics industry

Standard colours

black, white, blue

Special colours

upon special request

Premade pieces

enquire

Commonly known brands

CENTRODAL® C, Ertacetal® C, GEHR POM-C®, SUSTARIN® C, TECAFORM® AH, ZELLAMID® 900

Further information

Note: The product is available also in medical-grade quality.