POM LM

POM – Polyacetal

POM LM

White laser-markable POM LM (TECAFORM AH LM) is a POM-C with an additive that enables a strong contrast. In POM LM, laser markings appear in dark grey or black. The strong contrast achieved on plastics with TECAFORM AH LM’s laser marking enables the use of small fonts on smaller surfaces. Laser engraving offers a quick and cost-efficient method for marking products and making materials traceable in line with the food and pharmaceutical industry requirements. We deliver PO LM as plastic sheets and rods.

Physical properties
  Value Unit Test method
Specific gravity 1.41 g/cm3 DIN EN ISO 1183
Average molecular mass 106 g/mol
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 2700 MPa DIN EN ISO 527-2
Tensile strength 81 MPa DIN EN ISO 527-2
Elongation at break 11 % DIN EN ISO 527-2
Tensile strength at break 32 % DIN EN ISO 527-2
Flexural modulus 2400 MPa DIN EN ISO 178
Flexural strength 81 MPa DIN EN ISO 178
Compressive modulus MPa EN ISO 604
Compressive strength, 1%/2% MPa EN ISO 604
Impact strength (Charpy) 110 kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 140 MPa ISO 2039-1
Toughness (Shore D) Sh D DIN EN ISO 868
Wear-resistance % Sand-Slurry
Coefficient of friction (against steel) μ
Thermal properties
  Value Unit Test method
Glass-transition temperature -60 °C DIN 53765
Melting point 168 °C DIN 53765
Operating temperature (instantaneous) 140 °C
Operating temperature (continuous) 100 °C
Operating temperature (minimum) °C
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 J/(g×K) ISO 22007-4:2008
Thermal conductivity W/(m×K) ISO 22007-4:2008
Electrical properties
  Value Unit Test method
Surface resistivity DIN IEC 60093
Resistivity Ω×cm DIN IEC 60093
Dielectric strength kV/mm DIN EN 60243-1
CTI value V DIN EN 60112
Optical properties
  Value Unit Test method
Light transmittance
Refractive index
Optical errors DIN 52305/AS
Abrasion-resistance, 100 rotations with 500 g % haze ANSI Z26.1

Additional downloads

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

Special properties

  • low coefficient of friction
  • food-grade product
  • excellent mechanical strength
  • excellent machinability
  • laser-markable

Applications

food and drinks industry, laser technology, electronics industry, health technology and equipment, mechanical engineering, pharmaceutical industry

Standard colours

white

Special colours

upon special request

Premade pieces

enquire

Commonly known brands

TECAFORM AH LM