POM + PTFE

POM – Polyacetal

POM + PTFE

POM + PTFE is a mixed POM-H to which polytetrafluoroethylene (PTFE) has been added. This gives it excellent sliding characteristics.

Physical properties
  Value Unit Test method
Specific gravity 1.49 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 poor
Combustibility HB UL 94 DIN EN ISO 527-2
Food safety no
Mechanical properties
  Value Unit Test method
Modulus of elasticity 3,000 MPa DIN EN ISO 527-2
Tensile strength 53 MPa DIN EN ISO 527-2
Elongation at break 8 % DIN EN ISO 527-2
Tensile strength at break 8 % DIN EN ISO 527-2
Flexural modulus 3,000 MPa DIN EN ISO 178
Flexural strength 85 MPa DIN EN ISO 178
Compressive modulus 2,400 MPa EN ISO 604
Compressive strength, 1%/2% 19/33 MPa EN ISO 604
Impact strength (Charpy) does not break kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) 25 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 166 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 179 °C DIN 53765
Operating temperature (instantaneous) +150 °C
Operating temperature (continuous) 110 °C
Operating temperature (minimum) N/A
Thermal expansion coefficient, 23–60 °C 12 10-5 K-1 DIN EN ISO 11359-1;2
Thermal expansion coefficient, 23–100 °C 13 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity 1.3 J/(g×K) ISO 22007-4:2008
Thermal conductivity 0.46 W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity 1014 DIN IEC 60093
Resistivity N/A
Dielectric strength N/A
CTI value N/A
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
Specific gravity 1.49 g/cm3
Service temperature N/A … 110 °C
Price category €€€ (€26–50/kg)

Special properties

  • excellent wear-resistance
  • low coefficient of friction
  • excellent machinability
  • extremely low water absorption

Applications

slide bearings exposed to humidity, slide and chain applications, conveyor tracker rollers and other demanding slide and guide applications

Standard colours

dark grey

Premade pieces

enquire

Commonly known brands

CENTRODAL® TF, Ertacetal® H-TF, SUSTARIN® H AF, TECAFORM® AD AF, ZELLAMID® 900 XAF