40% Glass Fiber (40 GF) PC
40 GF PC is a grade of PC. It has the highest strength and lowest ductility compared to the other variants of PC. The graph bars on the material properties cards below compare 40 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
Elongation at Break
3.5 %
Flexural Modulus
10 GPa 1.5 x 106 psi
Flexural Strength
93 MPa 13 x 103 psi
Impact Strength: Notched Izod
150 J/m 2.8 ft-lb/in
Rockwell M Hardness
120
Tensile Strength: Ultimate (UTS)
160 MPa 22 x 103 psi
Thermal Properties
Glass Transition Temperature
150 °C 300 °F
Heat Deflection Temperature At 1.82 MPa (264 psi)
140 °C 290 °F
Specific Heat Capacity
1000 J/kg-K 0.24 BTU/lb-°F
Thermal Expansion
10 µm/m-K
Otherwise Unclassified Properties
Density
1.4 g/cm3 90 lb/ft3
Water Absorption At Saturation
0.16 %
Common Calculations
Strength to Weight: Axial
30 points
Strength to Weight: Bending
45 points
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