Polyetheersulfone (PES) is a high-performance engineering thermoplastic known for its excellent thermal stability, chemical resistance, and mechanical strength across a wide temperature range. It is widely used in demanding applications requiring durability in harsh chemical or thermal environments, including aerospace components, medical devices, automotive under-hood parts, and industrial filtration systems. Engineers select PES when standard commodity plastics (like polycarbonate or acrylic) cannot withstand sustained heat or chemical exposure, or when dimensional stability and low creep are critical performance requirements.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 28.09 | ksi | — | ||
Elongation at Break(εf) | 40.87 | - | — | ||
Flexural Strength (MOR)(σf) | 15.64 | ksi | — | ||
Hardness (Vickers)(HV) | 55.95 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 3.487 | ksi | — | ||
Young's Modulus(E) | 182.9 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 414.2 | °F | — | ||
Melting Point / Solidus(Tm) | 228.8 | °F | — | ||
Maximum Service Temperature(Tmax) | 772.4 | °F | — | ||
Thermal Conductivity(k) | 0.5742 | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.292 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.644 | - | — |