Polypropylene Block Copolymer
PP block copolymer is a grade of PP copolymer. It has the lowest strength compared to the other variants of PP copolymer. The graph bars on the material properties cards below compare PP block copolymer 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
Elastic (Young's, Tensile) Modulus
1.1 GPa 0.16 x 106 psi
Elongation at Break
12 %
Flexural Modulus
1.3 GPa 0.18 x 106 psi
Flexural Strength
31 MPa 4.5 x 103 psi
Tensile Strength: Ultimate (UTS)
23 MPa 3.3 x 103 psi
Other Material Properties
Density
0.9 g/cm3 56 lb/ft3
Heat Deflection Temperature At 1.82 MPa (264 psi)
100 °C 210 °F
Maximum Temperature: Mechanical
80 °C 180 °F
Melting Onset (Solidus)
150 °C 300 °F
Common Calculations
Stiffness to Weight: Axial
0.68 points
Stiffness to Weight: Bending
38 points
Strength to Weight: Axial
7.1 points
Strength to Weight: Bending
20 points
Followup Questions
Further Reading
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
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012