Polyethersulfone (PES)

MATERIAL DATA SHEET The information contained herein is typical and intended for REFERENCE USE ONLY. This information should NOT be used as a basis for design, manufacturing or quality assurance purposes. Please contact us for complete, manufacturer-approved material property data sheets. All values below are at 72°F (23°) unless otherwise noted.

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Polyethersulfone (PES) Specifications

Description

High resistance to heat and combustibility, low smoke emission, and transparency are the combination of properties possessed by stock shapes extruded from PES. These, coupled with light weight, good impact resistance, dimensional stability, and chemical resistance, make stock shapes extruded from PES resin useful in the electrical/electronics, aerospace/aircraft, automotive, and mass transit industries. PES stock shapes are also applicable for heat and fire safety, food service, and hospital and health care items.

Applications

Printed circuits • High intensity light bases • Safety face shields • Machine guards • Connectors

Advantages of polyethersulfone (PES)

Low smoke generation • Excellent electrical properties at elevated temperatures • Transparency • Excellent chemical resistance • Easily machined

Manufacturing Capabilities

Rod: 3/16” to 6” diameter • Sheet: .035” to 4” thick • Film: .001” to .029” thick • Slab: 1/4” to 4” thick

Color/Grades

Transparent (custom colors available)

Typical Properties of Polyethersulfone (PES)

	Units	ASTM Test	Result
Mechanical Properties
Tensile Strength @yeild	psi	D638	12,000
Tensile Strength @break	psi	D638	-
Tensile Modulus	psi	D638	385,000
Tensile Elongation @yield	%	D638	5.5
Tensile Elongation @break	%	D638	50.0 - 100.0
Flexural Strength @yield	psi	D790	16,100
Flexural Modulus	psi	D790	420,000
Compressive Strength @ yield	psi	D695	14,500
Compressive Modulus	psi	D695	388,000
Izod Impact Strength Un-notched	ft·lbs/in	D256	no break
Izod Impact Strength Notched @ 73°F	ft·lbs/in	D256	1.6
Hardness (R, M, L or D)	-	D7852	R127
Thermal Properties
Heat Deflection Temp. @66 psi	°F	D648	417
Heat Deflection Temp. @264 psi	°F	D648	399
Coefficient of Thermal Expansion	in/in/°F	D696	2.7 X 10-5
Flammability Rating-UL94 @.031"	-	-	V-0
Thermal Conductivity	(BTU•in)/(hr•ft2•°F)	C177	1.13
Limiting Oxygen Index	%	D2863	39.3
Electrical Properties
Dielectric Strength	V/mil	D149	380
Dielectric Constant @ 1kHz	-	D150	3.50
Dissipation Factor @ 1 kHz	-	D150	0.0022
Volume Resistivity	ohm•cm	D257	1.7 x 1015
Optical Properties
Haze	%	D1746	8.0
Transparency	%	D1746	76
Other Properties
Specific Gravity	-	D792	1.37
Water Absorption @24 hours	%	D570	1.85