The Xometry app works best with JavaScript enabled!
Xometry Logo
CapabilitiesIndustriesResourcesSuppliesBecome a SupplierFind Suppliers
Sign In
Cookie Policy
Xometry stores cookies on your computer to provide more personalized services to you, both on this website and through other media. By using this website, you consent to the cookies we use and our Privacy Policy.

CNC Machining in PTFE-Teflon

PTFE-Teflon is distinguished from most engineering plastics because of its very high melting point, low friction coefficient, and is chemically inert. These unusual properties have landed PTFE-Teflon coatings their well-known role in non-stick cookware and additional applications in the food and beverage, petrochemical, medical, and electrical components industries.

Placeholder MaterialPlaceholder Material

About PTFE-Teflon for CNC Machining

PTFE, or polytetrafluoroethylene, is a fluoropolymer-based thermoplastic made up entirely of carbon and fluorine atoms. It is commonly known by its DuPont trade name, Teflon. Teflon’s temperature resistance properties are among the highest of all common engineering plastics. It’s also exceptionally corrosion-resistant thanks to its fluoropolymer chemical makeup. CNC machining in PTFE-Teflon is CNC machining PTFE-Teflon is relatively easy due to its low strength and relative softness, though it may be difficult to maintain high levels of precision.

Generic PC (polycarbonate) at a Glance
ApplicationMedical implants, pipe coatings for corrosive chemicals, electrical component insulation
AdvantagesFood-safe, hydrophobic, high-temperature resistance, low friction coefficient
DisdvantagesCreates toxic fumes when overheated, poor abrasion resistance
Lead TimeLead time is generally a minimum of 3 days. However, this can increase depending on availability or if the parts are to be internationally manufactured.
Price$$
TolerancesMachining tolerances of 0.010” (0.25 mm) are achievable.
Wall ThicknessA minimum wall thickness of 0.03” (0.8 mm) is achievable. This can vary depending on the ratio of wall thickness to planar dimension.
Max Part SizeThe maximum size of the part is determined by the machines available and the complexity of the part.

Virgin PTFE-Teflon

Despite the material’s use primarily as a coating, some medical implants are manufactured via CNC machining in PTFE-Teflon. Teflon is inert and therefore medical implants made from this material are not rejected by the body. Its low friction coefficient makes it ideal for sliding-contact components like bearings.

General PTFE-Teflon Properties
Tensile Strength, Yield (MPa)Elongation at Break (%)Hardness (Shore D)Heat Deflection Temperature (°C)Melting Temperature (°C)
9-30300-40055-65115330

Finishes

Teflon is highly resistant to coatings due to its nature as a non-stick surface. Teflon tends to leave burrs on machined edges, but Xometry automatically removes these before shipping the finished product. 

  • As Machined: It is best to leave the part in its machined state. 
  • Bead Blast: For a smoother finish and to remove irregularities, parts may be bead blasted for a uniform surface smoothness.
accura clearvue

Cost-saving Design Tips

CNC machining in PTFE-Teflon can be challenging, especially if tight tolerances are required. As such, it is important to ensure that the machining process is as hassle-free and quick as possible.

  • Design features on the same axis planes: This will minimize the need for more costly 4- and 5-axis CNC machines.
  • Consistency is key: Keeping features such as internal corner radii and tapped holes consistent will also help save time and money on parts by reducing the need for tool changes. Find more design tips in our CNC Machining Design Guide.
    CNC machining design tip
    Instant Quoting Engine

    Need CNC Machined Parts in Polycarbonate (PC)?

    Quick Links

    • Contact Us

    • Help Center

    • Our Story

    • Xometry Go Green

    • Careers

    • Legal

    • Press

    • Refer a Colleague

    Locations

    • 7529 Standish Place

      Suite 200

      Derwood, MD 20855

    • 7940 Cessna Avenue
      Gaithersburg, MD 20879
      240-252-1138


    • 7315 Wisconsin Ave
      Suite 300 East
      Bethesda, MD 20814


    • 446 East High Street
      Lexington, KY 40507


    • 11777 San Vicente Blvd
      Suite 747
      Los Angeles, CA 90049


    • 117 Wright Industrial Cove
      Jackson, TN 38301


    • Ada-Lovelace-Str. 9
      85521 Ottobrunn, Germany
      +49 32 22 109 8186
      www.xometry.eu

    Xometry Go Green Initiative
    2.0M+
    LBS OF C02 OFFSET

    Xometry
    © 2021 Xometry, All Rights Reserved