PES (Polyethersulfone) is a high-performance engineering thermoplastic known for its excellent thermal stability, mechanical strength, and chemical resistance.
As an amorphous, transparent polymer, PES offers outstanding dimensional stability and can maintain its physical properties over a wide temperature range.
The PES Raw Material, also known as PES Plastic Resin or Polyethersulfone, is widely used in industries that demand high strength, reliability, and resistance to harsh conditions — including electronics, medical devices, automotive, and aerospace sectors.
Key Features of PES Material
High Heat Resistance
Continuous service temperature up to 180°C, with a glass transition temperature (Tg) around 220°C.
Maintains rigidity and stability even under high heat conditions.
Excellent Mechanical Strength
High tensile and flexural strength, providing exceptional structural integrity.
Superior Chemical Resistance
Resistant to acids, bases, and hydrolysis, suitable for use in demanding chemical environments.
Outstanding Dimensional Stability
Minimal creep and warpage under long-term stress and temperature exposure.
Good Electrical Properties
Excellent dielectric strength and insulation performance, even at elevated temperatures.
Transparency and Aesthetic Appearance
Naturally amber-transparent, allowing visibility of internal components, ideal for precision devices.
Hydrolysis and Steam Resistance
Capable of withstanding repeated sterilization cycles, ideal for medical and food contact applications.
Technical Specifications
| Property | Unit | Typical Value |
|---|---|---|
| Material Type | – | Polyethersulfone (PES) |
| Density | g/cm³ | 1.37 |
| Tensile Strength | MPa | 100 |
| Flexural Strength | MPa | 160 |
| Elongation at Break | % | 30 |
| Heat Deflection Temperature (1.8 MPa) | °C | 200 |
| Glass Transition Temperature (Tg) | °C | 220 |
| Flame Rating | – | UL94 V-0 |
| Dielectric Strength | kV/mm | 17 |
| Continuous Use Temperature | °C | -50°C ~ +180°C |
| Color | – | Amber Transparent / Custom |
| Form | – | Granules / Pellets |
Applications of PES Plastic Resin
Thanks to its unique balance of thermal stability, toughness, and resistance, PES Polyethersulfone is widely used in many industries:
Electrical and Electronics
Connectors, switches, and relay components
Insulators, sockets, and coil bobbins
Medical and Laboratory Equipment
Surgical and dental instrument handles
Sterilizable components and housings
Membrane filters and tubing
Aerospace and Automotive
Aircraft interior fittings and lighting components
Automotive headlamp housings and fuel system parts
Industrial and Mechanical
Pump impellers and compressor components
Precision mechanical parts and valve bodies
Food and Beverage Industry
Hot water and steam components
Food contact-grade filtration and dispensing equipment
Advantages of Using PES Material
High heat resistance and dimensional stability
Excellent transparency with attractive amber appearance
Resistant to hot water, steam, and repeated sterilization
Excellent electrical insulation at high temperatures
Chemical and hydrolysis resistant for long-term use
Suitable for injection molding, extrusion, and machining
Environmentally safe, halogen-free, and RoHS compliant
