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Acetron® is a general purpose copolymer acetal and is the only porosity-free acetal product available today. Investments in process technology now provide the performance and machinability of acetal without center core porosity. The in-line photometric quality procedure assures every sheet and rod is porosity-free as measured by the dye penetrant test making it the preferred acetal for food contact and medical applications. Acetron GP ® natural is FDA, USDA, NSF, Canada AG, and 3A-Dairy compliant.

Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi-crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties — especially in wet environments.

Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon 4 to 1. Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents.

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At a Glance

Generic Name
Polyoxymethylene

Available In
Sheet, Rod, Tube, Film

Certifications
ITAR Registered

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Technical Information

Stock Products Properties Applications Advantages Downloads

Stock Products

TypeSizeLengthColor
Sheet 060 – 6” 24” x 48’, 12” x 48”, 48” x 96” Natural & Black
Rod 1/8” – 12” 96”, 120” Natural & Black
Tube ½” – 4” ID 120” Natural
Film .010 – .060 Natural & Black

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.

Properties

Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.05
Water Absorption, 24 hrs & D570 0.2

 

Mechanical PropertiesUnitsASTMResults
Tensile Strength @ yield psi D638 10
Tensile Modulus psi D638 9500
Tensile Elongation @Break % D638 30
Flexural Strength psi D790 12
Flexural Modulus psi D790 400
Compressive Strength psi D695 15000
Compressive Modulus psi D695 400
Hardness, Rockwell R D785 120
IZOD Impact Strength Notched ft-lb/in D256 1
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion (x 10^-5 in./in./°F) 5.4
Heat Deflection Temp at 264 psi °F 220
Melting Temperature °F 335
Max Operating Temp. °F 180
Thermal Conductivity BTU-in/ft²-hr-°F .6
Flammability Rating HB
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 420
Dielectric Constant @1 MHz 3.8
Dissipation Factor@1 MHz D150 3.8
Volume Resistivity, 50% RH ohm-cm D257 1015

Applications

  • Bearing
  • Bushings
  • Electrical Components
  • Gears
  • Rollers
  • Structural Keels

Advantages

  • Excellent wear resistance
  • Very good strength, stiffness
  • Good heat resistance
  • Excellent chemical resistance
  • Opaque
  • No centerline porosity

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