Polyphenylsulfone (PPSU) exhibits impact resistance and chemical resistance more than PEI (ULTEM). It can operate in temperatures up to 180°C. This makes it an excellent choice for under-hood automotive applications and medical devices requiring steam sterilisation. The hydrolysis resistance is excellent compared to other amorphous thermoplastics. Besides that, it also resists common acids and bases over a broad range of temperatures.
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