40% Glass Fiber (40 GF) PP Homopolymer
40 GF PP homopolymer is a grade of PP homopolymer. It has the highest strength and lowest ductility compared to the other variants of PP homopolymer. The graph bars on the material properties cards below compare 40 GF PP homopolymer to: polypropylene plastics (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
64 MPa 9.3 x 103 psi
Elongation at Break
3.0 %
Flexural Modulus
7.0 GPa 1.0 x 106 psi
Flexural Strength
100 MPa 15 x 103 psi
Impact Strength: Notched Izod
95 J/m 1.8 ft-lb/in
Rockwell R Hardness
110
Tensile Strength: Ultimate (UTS)
93 MPa 13 x 103 psi
Thermal Properties
Glass Transition Temperature
170 °C 340 °F
Heat Deflection Temperature At 1.82 MPa (264 psi)
160 °C 320 °F
Maximum Temperature: Mechanical
120 °C 250 °F
Specific Heat Capacity
1230 J/kg-K 0.29 BTU/lb-°F
Thermal Expansion
30 µm/m-K
Otherwise Unclassified Properties
Density
1.2 g/cm3 76 lb/ft3
Water Absorption At Saturation
0.090 %
Common Calculations
Strength to Weight: Axial
21 points
Strength to Weight: Bending
37 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
Plastics Materials, 7th ed., J. A. Brydson, 1999