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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