An amorphous, transparent and pale amber high performance thermoplastic, similar to PES. It offers very good radiation resistance, good chemical and hydrolysis resistance and low ionic impurity levels. It has slightly lower temperature resistance than PES, but does offer lower moisture absorption levels than PES, although drying is still essential before thermoforming. It has poor fatigue characteristics and is prone to environmental stress cracking but has good long term thermal ageing resistance. Its chemical resistance is also very similar to PES.
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1.24 g/cm³ at 20 °C
Limiting oxygen indexLOI
30 % at 20 °C
Water absorption, equilibriumcwater,equib
0.4 % at 20 °C
Coefficient of thermal expansionα
5.6E-5 1/K at 20 °C
UL 94 - HB
Heat deflection temperature, 1.80 MPaHDT1.8,MPa
Max service temperatureTmax
150 - 180 °C
Dielectric constant, 1MHzεr,1MHz
3.1 [-] at 20 °C
17 kV/mm at 20 °C
Dissipation factor, 1MHzε''1MHz
5E-3 [-] at 20 °C
5.00E+14 Ω·m at 20 °C
Applications include use in food processing equipment such as milking machines, pumps, valves, filtration plates, heat exchangers and various medical components requiring repeated steam sterilisation.
Chemical Resistance: Acids (concentrated) Fair, Acids (dilute) Good, Alcohols Good, Alkalis Good, Aromatic hydrocarbons Fair, Greases and Oils Good, Halogens Good, Ketones Poor
This material data has been provided by Goodfellow.