Introducing PES (Polyether sulfone), an engineering plastic from Sumitomo Chemical Co., Ltd.

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PES (Polyether sulfone)

Outline of material

Sumika Excel PES is a transparent, amorphous polymer that is amber in color. It offers the highest level of heat resistance among transparent plastics, and features excellent practical and mechanical characteristics. It is also one of the top thermoplastics, with a flexural modulus in the range of 100 to 150°C and creep resistance of up to 180°C.

Characteristics

Heat characteristics

  • Continuous service temperature of  180°C
  • Deflection temperature under load (1.82 MPa) of  203°C
  • Withstands hot water and steam of up to 160°C
  • Does not hydrolyze
  • Has a low coefficient of linear thermal expansion and is not greatly reliant on temperature

Mechanical characteristics

  • Creep resistance of up to 180°C puts PES among the top thermoplastics
  • Flexural modulus of between 100 to 150°C is among the highest of all thermoplastic materials, and there is little change within the range of -100 to 200°C.
  • Tensile strength similar to that of polycarbonate

Chemical characteristics

  • Withstands oil, grease, and cleaning solvents
  • The best amorphous polymer in terms of stress and crack resistance
  • Dimensional change is limited even in water
  • FDA-approved for food hygiene standards
  • Low flammability (V-0 rated at 0.043 mm) and very low smoke emissions when burning

Mechanical workability

  • Machinable
  • Bendable

to Table of physical properties

Example uses

  • Sockets for BGAs and CSPs
  • Parts for medical equipment
  • Parts for hot-water piping equipment
  • Relays and connectors
  • Valve sheets
  • Observation windows
  • Coil bobbins, and more...

Grades

  • 4100G Natural (Non-reinforced)
  • 4101GL30 (Glass fiber reinforced)

About standard sizes

Unit: mm　*As of May 2008

4100G

Sheets:
Length Width Thickness
1000 500 5, 10, 15, 20
Rods
Length Diameter
1000 10, 20,30

4101GL30

Sheets
Length Width Thickness
－ － －
Rods
Length Diameter
1000 10, 20, 30, 50

Table of physical properties

The properties indicated below are typical values, and are not guaranteed. These values are provided for reference purposes only.

Property ASTM test method Unit 4100G 4101GL30
Specific gravity D792 － 1.37 1.60
Water absorption 23°C/24 hr D570 ％ 0.43 0.36
Tensile strength (at 23°C) D638 MPa 84 140
Tensile strength (at 150°C) D638 MPa 55 100
Flexural strength D790 MPa 129 190

Flexural modulus (at 23°C)

 D790 MPa 2599 8404

Flexural modulus (at 150°C)

 D790 MPa 2500 8208
Compressive strength (10% strain) D695 MPa 110 187
Izod impact strength
(notched) (6.4t)		 D256 J/m 85 81
Izod impact strength
(un-notched) (6.4t)		 D256 J/m Not destroyed 539
Rockwell hardness D785 － R120 R134
Deflection temperature under load (1.82 MPa) D648 ℃ 203 216
Continuous service temperature － ℃ 180 190
Coefficient of linear thermal expansion D696 10-5/K 5.5 2.3
Volume resistivity D257 Ω・m 1015 108

Download table of physical properties (PDF)

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