Teflon PTFE/FEP vs. Ultem Machining

Comparison of Teflon PTFE/FEP and Ultem Property Values

Unfilled35% Glass Filled24% Carbon Filled
< 0.010.020.05
3,9002,1001,900
72,000190,000160,000
7.56.46.0
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Material
Water Absorption Rating
Tensile Strength
Flexural Modulus
Coefficient of Linear Thermal Expansion
Dielectric Strength
Ultem
0.25
16,500
500,000
3.1
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Material Properties

  • Excellent dielectric properties
  • Inertness to most chemicals
  • High heat and chemical resistance
  • Very low coeffiecient of friction
  • Excellent radiation resistance
  • Zero moisture absorption
  • Relatively insensitive to power frequency
  • Machinability
  • Extremely strong and stiff
  • FDA compliant grades available
  • High chemical resistance
  • High dielectric strength

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