Amorf. thermoplastic with low humid absorption; when foamed well known as EPS (‘Expanded Polystyrene’); rarely re-enforced with glas fibers.

Specific properties
Mass: 1,05 g/cm3

Mechanical properties:
Stiff, hard, brittle. Low Charpy and impact resistance.

Thermal properties:
Applicable up to +70ºC.
Burns very well with sooty flame without dripping.

Glass clear transparent.
Can be coloured in almost any colour be it transparent or opaque; with high surface gloss.
Yellowing occur in UV-light

Well injection mouldable;
Well gluable with solvent glues (mostly based on Toluol, DiChlormethane, Butylacetate in which 2% PS is solved) ;
Gluable to other materials by 2-k glues.
Good weldable through different weld techniques;
Can be mechanically processed (milling, turning, drilling…)
Printable (tampon, film, silk screen printing)
Metallising through vacuum

- High gloss transparent packaging for cosmetics, pen’s, cd’s and dvd’s, d-i-y articles, desk accessories …
- Lights in all sorts for interior lighting …
- displays in electronics …
- Simple toys, model kits …,
- disposable dinnerware (aerospace), storage aids, combs, toothbrushes, …


Young's modulus 3250 MPa
Shear modulus 750 MPa
Tensile strength 46 MPa
Elongation 3.4 %
Fatigue 20 MPa
Bending strength 75 MPa
Hardness 72.5 Rockwell
Impact strength 5 J/cm
Yield strength 0 MPa
Thermal expansion 70 E-6/K
Thermal conductivity 0.15 W/m*K
Specific heat 1300 J/kg*K
Vicat 100 °C
Melting temperature Amorphou °C
Glass temperature 89 °C
Minimum service temperature -10 °C
Maximum service temperature 90 °C
Density 1045 kg/m3
Resistivity 1E+22 Ohm*mm2/m
Breakdown potential 130 kV/mm
Dielectric loss factor 0.0001
Friction coefficient 0.4
Refraction index 1.585
Shrinkage 0.5 %
Water absorption 0.1 %