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General Polystyrene (PS)

Alternative and trade names
Styrolution®, Edistir®
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Description

Unfilled, no additives.

Properties

Electrical

Dielectric constant εr

2.4 - 2.5 [-] at 20 °C

Electrical resistivity ρel

1.00E+14 Ω·m at 20 °C

General

Density ρ

1.04 - 1.05 g/cm³ at 20 °C

Mechanical

Elastic modulus E

2 - 3.3 GPa at 20 °C

Elongation A

1 - 7 % at 20 °C

Impact strength, Charpy notched Ivnot

2 - 6 kJ/m² at 20 °C

Impact strength, Charpy unnotched Iunnot

7 - 18 kJ/m² at 20 °C

Max allowed stress σmax

20 - 60 MPa at 20 °C

at 1-7% strain

Optical

Transparency

yes

Thermal

Coefficient of thermal expansion α

6E-5 - 9E-5 1/K at 20 °C

Flammability

UL 94 HB

Max service temperature, long Tmaxlong

60 - 80 °C

Max service temperature, short Tmaxshort

75 - 90 °C

Specific heat capacity cp

1300 J/(kg·K) at 20 °C

Thermal conductivity λ

0.16 - 0.18 W/(m·K) at 20 °C

Technological properties

Application areas

Packaging food, packaging cosmetics, horticultural pots, insulation panels

Fillers

Glass fibre, carbon powder

Processing methods

Injection molding, extrusion, thermoforming, foaming

This material data has been provided by M-Base.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.