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Westlake Plastics

Westlake Plastics Pomalux® Acetal Copolymer
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes: Pomalux® POMC Polyoxymethylene is a high-performance acetal copolymer. Pomalux® POMC is a 100% recyclable, semi-crystalline engineering thermoplastic most commonly used for a wide range of engineering applications. Pomalux® POMC has excellent mechanical, electrical, and wear properties. It is engineered to provide outstanding dimensional stability, even when machining parts with complex geometries. Pomalux® POMC is an excellent choice for many bearing and wear applications since it has low coefficient of friction and wears well in both wet and dry environments. It is widely used for assembly jigs and fixtures because of its inherent dimensional stability and excellent wear properties. These include automotive, electrical & electronics, industrial, and drug delivery applications, gears, bearings, snap fittings, and many other engineering components. Pomalux® POMC is often specified for electrical applications when low moisture absorption and high dielectric strength are required. Both natural (white) and black Pomalux® POMC are FDA compliant for use in food processing machinery. Westlake Plastics manufactures all Acetal extruded & compression molded sheets, plates, and rods in accordance with ASTM D6100. This specification covers requirement and test methods for the material, dimensions, workmanship and the properties of extruded and compression molded sheets, plates and rods.

Industry: Chemical Process; Engineering; Semiconductor and ESD

Colors Available: Black, Natural

Attributes: Chemical Resistance; Dielectric Properties; Wear Resistance; Food Contact

Shapes: Extruded Slab; Compression Sheet; Extruded Sheet; Extruded Rod

Information provided by Westlake Plastics Co.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.41 g/cc1.41 g/ccASTM D792
Water Absorption 0.20 %
@Time 86400 sec
0.20 %
@Time 24.0 hour
ASTM D570
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 7878ASTM D785
Tensile Strength, Yield  60.7 MPa
@Temperature 22.8 °C
8800 psi
@Temperature 73.0 °F
ASTM D638
 94.5 MPa
@Temperature -40.0 °C
13700 psi
@Temperature -40.0 °F
ASTM D638
Elongation at Break  30 %
@Temperature -40.0 °C
30 %
@Temperature -40.0 °F
ASTM D638
 75 %
@Temperature 22.8 °C
75 %
@Temperature 73.0 °F
ASTM D638
Tensile Modulus 2.46 GPa357 ksiASTM D638
Flexural Modulus 2.59 GPa375 ksiASTM D790
Compressive Strength 110 MPa16000 psi10% deflection; ASTM D695
Izod Impact, Notched  0.641 J/cm
@Temperature -40.0 °C
1.20 ft-lb/in
@Temperature -40.0 °F
ASTM D256
 0.801 J/cm
@Temperature 22.8 °C
1.50 ft-lb/in
@Temperature 73.0 °F
ASTM D256
 
Thermal PropertiesMetricEnglishComments
CTE, linear 216 µm/m-°C120 µin/in-°FASTM D696
Deflection Temperature at 1.8 MPa (264 psi) 110 °C230 °FASTM D648
Flammability, UL94 HBHB
 
Descriptive Properties
ColorNatural (white) FDA

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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