PES (Polyethersulfone)
Polyethersulfone — an amorphous high-performance thermoplastic from the sulfone family (PSU/PES/PPSU). Highest continuous service temperature among standard sulfones (up to 180°C), glass transition 220°C. Transparent amber color, excellent dimensional stability, hydrolytic stability even under steam sterilization (>1000 cycles). High mechanical strength maintained at elevated temperatures. Commercialized in 1972 by ICI and 3M. Typical applications: aerospace interior components, membrane filters (ultrafiltration), medical sterilizable devices, hot water fittings, battery components, electronic connectors, food service equipment.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| ISO 1043 | INT | PES | — | REF | |
| ISO 1043 | INT | PESU | — | 100% | |
| 🇺🇸 | ASTM D6262 | USA | PES | — | 100% |
Mechanical properties — Pro
Typical
| Property | Value | Unit |
|---|---|---|
| Density | ||
| Tensile Strength | ||
| Elastic Modulus | ||
| Elongation | ||
| Glass Transition Temp (Tg) | ||
| hdt_1.8mpa | ||
| impact_kv | ||
| Water Absorption (24h) |
Service Range
| Property | Value | Unit |
|---|---|---|
| Continuous Use Temp |
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