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Acetal Characteristics
Acetal is an easy-to-machine, general purpose engineering plastic that has excellent dimensional stability. It is rigid, strong and has a low coefficient of friction against metals, other acetals and plastics. Its superior creep resistance makes acetal a good choice when dimensional stability is needed. Delrin® is a trade name of a homopolymer acetal. (A homopolymer is a polymer made from many copies of a single repeating unit.)
See the chart below for details of acetal’s material properties.
Acetal’s other benefits include low water absorption, good electrical properties, resistance to fatigue and organic solvents, and outstanding wear characteristics.
Several grades of Acetal are FDA-approved for use with foods.
Acetal’s characteristics include:
- Strong, rigid and tough
- Excellent mechanical stability
- Excellent creep, moisture and fatigue resistance
- Low coefficient of friction
- Easily machined and fabricated
- Low water absorption
- FDA approved
- Good electrical properties
Applications for Acetal – Delrin®
- Mechanical gears and valves
- Bearings
- Industrial and automotive parts
- Food processing parts
- Medical devices
- Packaging equipment components
- Plumbing parts
- Fixtures
Contact a Dielectric Manufacturing knowledge expert to discuss the use of acetal for fabrication of your thermoplastic parts. Call 800-367-9122 or email sales@dielectricmfg.com.
We also are a distributor of Delrin® acetal. Contact us to discuss how we can fulfill your material needs.
Acetal Material Properties
Dielectric Manufacturing, Richfield, Wisconsin USA dielectricmfg.com Acetal Material Properties Provided By Dielectric Manufacturing, Richfield, Wisconsin
Property Metric Units English Units
Density 1.39e3 - 1.43e3 kg/m^3 86.8 - 89.3 lb/ft^3
Mechanical
Yield Strength 2.86e7 - 7.24e7 Pa 7.05 - 10.5 ksi
Tensile Strength 6e7 - 8.96e7 Pa 8.7 - 13 ksi
Elongation 0.1 - 0.75 % strain 10.0 - 75.0 % strain
Hardness (Vickers) 1.43e8 - 2.43e8 Pa 14.6 - 24.8 HV
Fracture Toughness 1.71e6 - 4.2e6 Pa/m^0.5 1.55 - 3.82 ksi/in^0.5
Young's Modulus 2.5e9 - 5e9 Pa 0.363e6 - 0.725e6 10^6 psi
Thermal
Max Service Temperature 76.9 - 96.9 °C 170 - 206 °F
Melting Temperature 160 - 184 °C 320 - 363 °F
Insulator or Conductor Insulator Insulator
Specific Heat Capability 1.36e3 - 1.43e3 J/kg °C 0.326 - 0.342 BTU/lb. °F
Thermal Expansion Co-efficient 7.57e-5 - 2.02e-4 strain/°C 42.1 - 112 µstrain/°F
Eco
CO2 Footprint 3.8 - 4.2 kg/kg 3.8 - 4.2 lb/lb
Recyclable Yes Yes
