Plastic Polycarbonate

Plastic Polycarbonate (PC) strength, stiffness, density and thermal properties, with their source.

A bracket in Plastic Polycarbonate, smooth finish.

Mechanical
Process	Bulk polymer (molded or machined)
Yield strength	65MPasourcetypical, tensile yield
Ultimate tensile strength	65MPasourcetypical, stress at break
Flexural strength	97MPasourcetypical, flexural strength
Elongation at break	125%sourcetypical, strain at break
Young's modulus (stiffness)	2.4GPasourcetypical
Density	1,200kg/m³sourcetypical
Strength to weight	54.2kN·m/kg
Stiffness to weight	2MN·m/kg
Poisson's ratio	0.38sourcetypical, polycarbonate family (Covestro Part and Mold Design guide, Table 3-1)
Shear modulus	0.87GPa
Bulk modulus	3.33GPa
Speed of sound	1,414m/s
Thermal
Thermal conductivity	0.2W/m·Ksourcetypical, through-plane, 23 C
Thermal expansion	65µm/m·Ksourcetypical, 23-55 C, parallel and normal
100 mm part over a 50 °C swing	325µm growth
Specific heat	1,172J/kg·Ksourcetypical (guide value), Bayer ASTM datasheet for Makrolon 2405, ASTM D 2766
Heats up and cools (diffusivity)	0.142mm²/s
Thermal shock resistance	51.7W/m
Glass transition	144°Csourcetypical, DSC 10 C/min
Max service temperature	125°CsourceUL 746B RTI, tensile strength, 1.5 mm
Values for	Covestro Makrolon 2405 general-purpose PC (MVR 19), Covestro technical datasheet version 2026-09-28, typical values

Among 59 materials

Stiffness against density

Strength against density