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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. Homopolymer acetal is most commonly recognized as Delrin, resins that are currently made by the DuPont Company under the trade name Delrin® AF. Homopolymers have slightly higher mechanical and thermal properties than Copolymers. Homopolymer, Unfilled Delrin® natural and black are FDA, USDA, NSF, Canada AG and 3A-Dairy compliant.
Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.
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|Sheet||3/8″ – 2″ TH||12″ x 48″, 24″ x 48″, 48″ x 96″||Natural, Black|
|Rod||1/4″ – 6″ DIA||96″, 120″||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.
|Water Absorption. 24 hrs||%||D570||20|
|Tensile Strength @yield||psi||D638||9500|
|Tensile Elongation @Break||%||D638||30|
|Hardness. Rockwell R||D785||120|
|IZOD Impact Strength Notched||ft-lb/in||D256||1|
|Coefficient of Linear Thermal Expansion||Expansion (x 10-5 in./in./°F)||D256||4.7|
|Heat Deflection Temp at 264 psi||°F||D648||220|
|Max Operating Temp||°F||180|
|Volume Resistivity. 50% RH||ohm-cm||D257||10^15|
NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.
NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-434-7432.