The material: 'Polysulphone' you were looking for has been superseded by the one below.

Polysulfone (PSU)

Alternative and trade names
Udel®, Ultrason®
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It keeps stiffness and dimensional stability even when used at very high temperatures. It is used for molding high-quality engineering parts and highly stressed mass-produced articles. It is a rigid, high-strength, semi-tough, transparent plastic that offers higher heat resistance and better hydrolytic stability than polycarbonate. It retains its good mechanical properties when exposed to steam and other sterilization techniques.

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.

Ashby charts

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1.24 - 1.25 g/cm³

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Elastic modulus

2.5 - 2.8 GPa

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25.0 - 30.0 %

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Impact strength, Charpy notched

3.5 - 7.0 kJ/m²

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Tensile strength

70.0 - 90.0 MPa

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at 6-22% strain

Impact strength, Charpy unnotched

no break



Coefficient of thermal expansion

5.5e-05 - 6e-05 1/K

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Specific heat capacity

1300 J/(kg·K)

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Thermal conductivity

0.15 - 0.28 W/(m·K)

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UL 94 HB-V1



Dielectric constant

3 [-]

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3.2 [-]

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Electrical resistivity

10000000000000 Ω·m

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Technological properties

Application areas

Mouth guards, switch latches, fuseholders, breaker covers, dental x-ray holders

Processing methods

Injection molding, blow molding, extrusion, thermoforming