Polystyrene (PS)

Density ρ

1.04 - 1.05 g/cm³ at 20 °C

Elastic modulus E

2 - 3.3 GPa at 20 °C

Elongation A

1 - 7 % at 20 °C

Impact strength, Charpy notched I_vnot

2 - 6 kJ/m² at 20 °C

Impact strength, Charpy unnotched I_unnot

7 - 18 kJ/m² at 20 °C

Max allowed stress σ_max

20 - 60 MPa at 20 °C

at 1-7% strain

Coefficient of thermal expansion α

6E-5 - 9E-5 1/K at 20 °C

Max service temperature, long T_maxlong

60 - 80 °C

Max service temperature, short T_maxshort

75 - 90 °C

Specific heat capacity c_p

1300 J/(kg·K) at 20 °C

Thermal conductivity λ

0.16 - 0.18 W/(m·K) at 20 °C

Dielectric constant ε_r

2.4 - 2.5 [-] at 20 °C

Electrical resistivity ρ_el

1.00E+14 Ω·m at 20 °C