Acetal Polyoxymethylen Copolymer - POM 2% silicone lubricated

Polymer Type

Thermoplastic

Advantages

Extremely low coefficient of friction. Good rigidity, creep resistance and toughness. Excellent resistance to most solvents.

Disadvantages

Those normally associated with unmodified copolymer, i.e. high mould shrinkage, poor resistance to UV radiation, acids and bases.

Typical Properties

Property

Value

Density (g/cm3)

1.40

Surface Hardness

RR112

Tensile Strength (MPa)

55

Flexural Modulus (GPa)

2.1

Notched Izod (kJ/m)

0.085

Linear Expansion  (/°C x 10-5)

11

Elongation at Break (%)

50

Strain at Yield (%)

8

Max. Operating Temp. (°C)

90

Water Absorption (%)

0.18

Oxygen Index (%)

15

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

20

Dissipation Factor 1kHz

0.0015

Dielectric Constant  1kHz

3.7

HDT @ 0.45 MPa (°C)

148

HDT @ 1.80 MPa (°C)

110

Material. Drying  hrs @ (°C)

2 @ 90

Melting Temp. Range (°C)

190 - 210

Mould Shrinkage (%)

1.8

Mould Temp. Range (°C)

60 - 120

Applications

Gears, bearings, sprockets, conveyor belt components, drive chains, bearing bushes, snap fit components, pulley wheels and spring studs.

 

Source : Abstracted from Plascams

For more information on Plascams please visit The Rubber and Plastics Research Association

 

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