POM – Polyacetal
POM ELS
Polyacetal (POM-C) is modified with added carbon to make it electrically conductive. The material is extremely strong and hard, and it has excellent properties related to resistance to wear, chemicals, UV radiation and weather. Because of its excellent wear-resistance properties, it is ideal for slider applications. We deliver POM-ELS as plastic sheets and bars.
- Physical properties
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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) 0.2 % DIN EN ISO 62 Weather-resistance good Combustibility HB UL 94 DIN EN ISO 527-2 Food safety no - Mechanical properties
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Value Unit Test method Modulus of elasticity 1800 MPa DIN EN ISO 527-2 Tensile strength 42 MPa DIN EN ISO 527-2 Elongation at break 11 % DIN EN ISO 527-2 Tensile strength at break 11 % DIN EN ISO 527-2 Flexural modulus 1500 MPa DIN EN ISO 178 Flexural strength 56 MPa DIN EN ISO 178 Compressive modulus 1500 MPa EN ISO 604 Compressive strength, 1%/2% 16/25/45 MPa EN ISO 604 Impact strength (Charpy) 74 kJ/m2 DIN EN ISO 179-1eU Notch impact strength (Charpy) N/A Notch impact strength (Izod) – kJ/m2 DIN EN ISO 180/2A Toughness (ball pressure) 96 MPa ISO 2039-1 Toughness (Shore D) N/A Wear-resistance N/A Coefficient of friction (against steel) N/A - Thermal properties
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Value Unit Test method Glass-transition temperature -60 °C DIN 53765 Melting point 169 °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 1.3 J/(g×K) ISO 22007-4:2008 Thermal conductivity 0.46 W/(m×K) ISO 22007-4:2008 - Electrical properties
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Value Unit Test method Surface resistivity 102 – 104 Ω DIN IEC 60093 Resistivity 103 – 105 Ω×cm DIN IEC 60093 Dielectric strength N/A CTI value N/A - Optical properties
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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 | plastic sheets, plastic rods |
|---|---|
| Specific gravity | 1.41 g/cm3 |
| Service temperature | N/A … 100 °C |
| Price category |
Special properties
- electrical conductivity
- low coefficient of friction
- extremely good dimensional accuracy
- excellent machinability
- broad service temperature range
- good mechanical strength, rigidity, and hardness
- good UV and weather resistance
- high chemical resistance
Applications
chemical industry, electronics industry, mechanical engineering, vehicle-manufacturing industry
Standard colours
black