Teflon® (Polytetrafluoroethylene, PTFE)
Teflon® is considered to be the most slippery material that exists. It withstands extreme temperatures, is an excellent insulator and is resistant to nearly all industrial chemicals and solvents. Because it has a low coefficient of friction, it is a superb choice for applications in which materials will slide against one another and is often used for products that need an antistick surface.
Teflon has outstanding dielectric properties that remain stable with frequency and temperature. It resists ignition and does not promote the spread of flames. Teflon has a uniquely high bulk density.
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|Density||2.14e3 - 2.2e3||kg/m^3||0.0773 - 0.0795||lb/ft^3|
|Yield Strength||1.97e7 - 2.17e7||Pa||2.86 - 3.15||ksi|
|Tensile Strength||2.07e7 - 3.45e7||Pa||5-Mar||ksi|
|Elongation||2.0 - 4.0||% strain||200 - 400||% strain|
|Hardness (Vickers)||5.79e7 - 7e6||Pa||5.9 - 6.5||HV|
|Impact Strength (notched)||1.5e4 - 1.7e4||J/m^2||7.14 - 8.09||ft.lbf/in^2|
|Fracture Toughness||1.32e6 - 1.8e6||Pa/m^0.5||1.2 - 1.64||ksi/in^0.5|
|Young's Modulus||4e8 - 5.52e8||Pa||0.058 - 0.0801||10^6 psi|
|Max Service Temperature||250 - 271||°C||482 - 520||°F|
|Melting Temperature||315 - 339||°C||599 - 642||°F|
|Insulator or Conductor||Insulator||Insulator|
|Specific Heat Capability||970 - 1.09e3||J/kg °C||0.232 - 0.26||BTU/lb. °F|
|Thermal Expansion Coefficent||1.2e-4 - 1.7e-4||strain/°C||66.7 - 94.4||µstrain/°F|
|CO2 Footprint||7.06 - 7.8||kg/kg||7.06 - 7.8||lb/lb|
∗ The information on this page is intended as general guidance only and is only accurate at the time of posting (see date below). Specific material properties vary by manufacturer. Please contact a Dielectric application engineer for help in choosing the optimal material for your application and budget.
Posting Date: August 16, 2012