Poly(phenylene ether) + Polystyrene (PPE+PS)

Alternative and trade names
Noryl™, Xyron®


It is a non-reinforced blend of polyphenylene ether (PPE) + high impact polystyrene (HIPS). This injection moldable grade exhibits good surface appearance, high ductility, and good impact resistance along with low moisture absorption, creep resistance, dimensional stability, and hydrolytic stability.



Density ρ

1.04 - 1.1 g/cm³ at 20 °C


Elastic modulus E

2.2 - 2.9 GPa at 20 °C

Elongation A

30 - 70 % at 20 °C

Impact strength, Charpy notched Ivnot

10 - 25 kJ/m² at 20 °C

Impact strength, Charpy unnotched Iunnot

no break

Max allowed stress σmax

30 - 80 MPa at 20 °C

at 2-10% strain


Coefficient of thermal expansion α

5E-5 - 1E-4 1/K at 20 °C


UL 94 HB

Max service temperature, long Tmaxlong

100 °C

Max service temperature, short Tmaxshort

120 °C

Specific heat capacity cp

1400 J/(kg·K) at 20 °C

Thermal conductivity λ

0.22 - 0.24 W/(m·K) at 20 °C


Dielectric constant εr

2.6 - 2.9 [-] at 20 °C

Electrical resistivity ρel

1.00E+13 - 1.00E+15 Ω·m at 20 °C




Technological properties

Application areas

Valve components, water pump housings, spoilers, medical devices

Processing methods

Injection molding, blow molding, extrusion

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.