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Sustarin C Acetal Copolymer

SUSTARIN C (Acetal) is a general-purpose copolymer acetal that is porosity free. Sustarin® C copolymer has a number of benefits, including strength, tenacity, and toughness in a temperature range of 50-120°C. As a dedicated engineering material, it is now used in applications that were once the domain of metals.

Sustarin® C meets EU and FDA requirements for food contact applications except where foods have 15% or more alcohol content. Due to its highly crystalline nature, Sustarin® C, has excellent machining qualities (especially in wet or moist environments) resulting in close tolerance parts and excellent bright surface finish. Sustarin® C can be used in hot water applications up to 60°C without any hydrolysis effect.


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Technical Information

Stock Products Properties Applications Advantages Downloads

Stock Products

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.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.054
Water Absorption, 24 hrs % D570 0.2
Mechanical PropertiesUnitsASTMResults
Tensile Strength @ yield psi D638 10
Tensile Modulus psi D638 400
Tensile Elongation @Break % D638 30
Flexural Strength psi D790 12
Flexural Modulus psi D790 400
Compressive Strength psi D695 15
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 1.6
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


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


  • High dimensional stability
  • Excellent wear resistance
  • Very good strength, stiffness
  • Good heat resistance
  • High abrasion resistance
  • Excellent chemical resistance
  • Low creep tendency


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