30% Carbon Fiber (30 CF) PTFE
30 CF PTFE is a grade of PTFE. It has the lowest strength and lowest ductility compared to the other variants of PTFE. The graph bars on the material properties cards below compare 30 CF PTFE to: fluoroplastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Compressive (Crushing) Strength
12 MPa 1.7 x 103 psi
Elongation at Break
75 %
Flexural Modulus
1.1 GPa 0.16 x 106 psi
Flexural Strength
16 MPa 2.3 x 103 psi
Tensile Strength: Ultimate (UTS)
13 MPa 1.9 x 103 psi
Thermal Properties
Heat Deflection Temperature At 1.82 MPa (264 psi)
66 °C 150 °F
Maximum Temperature: Mechanical
260 °C 500 °F
Melting Onset (Solidus)
340 °C 640 °F
Thermal Conductivity
0.65 W/m-K 0.38 BTU/h-ft-°F
Thermal Expansion
110 µm/m-K
Other Material Properties
Density
2.1 g/cm3 130 lb/ft3
Electrical Resistivity Order of Magnitude
2.0 10x Ω-m
Limiting Oxygen Index (LOI)
90 %
Water Absorption After 24 Hours
0.050 %
Common Calculations
Strength to Weight: Axial
1.7 points
Strength to Weight: Bending
5.9 points
Followup Questions
Further Reading
Fluoroplastics: Volume 2 - Melt Processable Fluoropolymers, Sina Ebnesajjad, 2003
Reinforced Plastics Durability, Geoffrey Pritchard (editor), 1999
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999