20% Glass Fiber (20 GF) PC
20 GF PC is a grade of PC. The graph bars on the material properties cards below compare 20 GF PC to: otherwise unclassified thermoplastics (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
Elastic (Young's, Tensile) Modulus
5.9 GPa 0.86 x 106 psi
Elongation at Break
5.5 %
Fatigue Strength
34 MPa 5.0 x 103 psi
Flexural Modulus
5.7 GPa 0.82 x 106 psi
Flexural Strength
130 MPa 19 x 103 psi
Impact Strength: Notched Izod
140 J/m 2.7 ft-lb/in
Rockwell M Hardness
91
Tensile Strength: Ultimate (UTS)
110 MPa 16 x 103 psi
Thermal Properties
Glass Transition Temperature
150 °C 300 °F
Heat Deflection Temperature At 1.82 MPa (264 psi)
150 °C 290 °F
Heat Deflection Temperature At 455 kPa (66 psi)
150 °C 300 °F
Specific Heat Capacity
1090 J/kg-K 0.26 BTU/lb-°F
Thermal Conductivity
0.21 W/m-K 0.12 BTU/h-ft-°F
Electrical Properties
Dielectric Strength (Breakdown Potential)
19 kV/mm 0.74 V/mil
Electrical Resistivity Order of Magnitude
16 10x Ω-m
Otherwise Unclassified Properties
Density
1.3 g/cm3 84 lb/ft3
Water Absorption After 24 Hours
0.16 %
Water Absorption At Saturation
0.19 %
Common Calculations
Stiffness to Weight: Axial
2.4 points
Stiffness to Weight: Bending
45 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
38 points
Thermal Diffusivity
0.14 mm2/s
Followup Questions
Further Reading
ASTM D883: Standard Terminology Relating to Plastics
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