PSU

polymer

Polysulfone (PSU) is an amorphous high-performance engineering thermoplastic characterized by aromatic sulfone linkages that provide thermal stability and rigidity. It is widely used in demanding applications requiring sustained performance at elevated temperatures, including aerospace components, medical devices, automotive underbody parts, and transparent or opaque industrial equipment where creep resistance and chemical durability are critical. Engineers select PSU over commodity plastics when superior heat resistance, dimensional stability, and long-term mechanical retention under load are required, though it is typically reserved for applications where the cost premium versus standard thermoplastics is justified by performance or regulatory requirements.

aerospace structural componentsmedical device housings and tubingautomotive under-hood partstransparent industrial windows and covershigh-temperature electrical insulatorschemical processing equipment

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Elongation at Break(εf)
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Hardness (Vickers)(HV)
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HV——
Ultimate Tensile Strength(σUTS)
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ksi——
Young's Modulus(E)
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ksi——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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°F——
Melting Point / Solidus(Tm)
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°F——
Maximum Service Temperature(Tmax)
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°F——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Refractive Index(n)
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-——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.