Cyclic Olefin Copolymer (COC)
COC is an otherwise-unclassified thermoplastic material. It has a moderately low ductility and a moderately low density among thermoplastics. The graph bars on the material properties cards below compare COC 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
3.0 GPa 0.44 x 106 psi
Elongation at Break
2.5 %
Tensile Strength: Ultimate (UTS)
60 MPa 8.7 x 103 psi
Thermal Properties
Heat Deflection Temperature At 455 kPa (66 psi)
130 °C 270 °F
Thermal Expansion
60 µm/m-K
Other Material Properties
Density
1.0 g/cm3 62 lb/ft3
Electrical Resistivity Order of Magnitude
14 10x Ω-m
Refractive Index
1.5
Water Absorption After 24 Hours
0 %
Common Calculations
Stiffness to Weight: Axial
1.7 points
Stiffness to Weight: Bending
48 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
34 points
Thermal Shock Resistance
24 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