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Westlake Plastics Pomalux® Acetal Copolymer For Medical Applications  (discontinued **)
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes: Replaced by Pomalux WM.

Medical grade Pomalux is made from acetal copolymer resin which allows machined products the ability to retain dimensional integrity, maintain stability in water and most chemicals at elevated temperatures. Pomalux products are opaque and are available in a wide array of standard colors as well as on a custom basis. Recommended sterilization techniques for Pomalux include EtO gas and steam autoclaving. Disinfectants and germicides generally have no effect on Pomalux, however, acidic solutions can degrade the polymer.

Information provided by Westlake Plastics.

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Physical PropertiesOriginal ValueComments
Density 1.41 g/ccASTM D792
Water Absorption 0.22 %ASTM D570; 24 hrs.
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 78ASTM D785
Tensile Strength, Yield 8800 psiASTM D638
Elongation at Break 75 %ASTM D638
Tensile Modulus 380000 psiASTM D638
Flexural Yield Strength 13000 psiASTM D790
Flexural Modulus 375000 psiASTM D790
Compressive Strength 4500 psi1% deflection; ASTM D695
 16000 psi10% deflection; ASTM D695
Fatigue Strength 4000 psiFatigue Endurance; ASTM D 671
Shear Strength 7700 psiASTM D732
Izod Impact, Notched 1.50 ft-lb/inASTM D256
Tensile Impact Strength 90.0 ft-lb/in²ASTM D1822
 
Thermal PropertiesOriginal ValueComments
CTE, linear 45.0 - 61.0 µin/in-°F
@Temperature 20.0 °C
ASTM D696
Thermal Conductivity 1.60 BTU-in/hr-ft²-°FASTM C177
Deflection Temperature at 0.46 MPa (66 psi) 316 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 230 °FASTM D648
Flammability, UL94 HB
@Thickness 15.2 mm

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PWEST100 / 72746

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