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Semitron® ESd 500HR
High-Resistivity Static Dissipative PTFE Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


BPI Home Page | Applications | Materials Guide | Contact Us!
Semitron Family Overview | Semitron ESd 225 | Semitron ESd 410C | Semitron ESd 420
Semitron ESd 480 | Semitron ESd 490HR | Semitron ESd 500HR | Semitron ESd 520HR
Semitron MDS 100 | Semitron MP 370 | Semitron CMP LL5 | Semitron CMP XL25 | Semitron MPR 1000

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click to resize photo Semitron® ESd 500HR is a static dissipative reinforced PTFE (PolyTetraFluoroEthylene). This material has the same general properties as unfilled PTFE, but with static dissipative properties throughout in the high-resistivity range of 1010 to 1012. It is thermally stable to temperatures of 500°F (260°C) without degradation. Semitron® ESd 500HR offers high thermal insulation and a low coefficient of friction.

This material is available in sheet and rod forms and is  WHITE  in color.
( see also Standard PTFE Specifications )

Semitron® ESd is a family of static dissipative products designed for use where electrical discharge in operation is a problem. They are commonly used for sensitive electronic components including integrated circuits, hard disk drives, and circuit boards. Semitron® products are also an excellent choice for material handling applications, and components in high speed electronic printing and reproducing equipment.

Semitron® ESd products are inherently dissipative. They do not rely on atmospheric phenomena (humidity) to activate, nor are surface treatments used to achieve dissipation. Static electicity is dissipated through these products as readily as it is dissipated along the surface.

See other available Semitron® ESd Family grades:
Semitron ESd 225 | Semitron ESd 410C | Semitron ESd 420 | Semitron ESd 480 | Semitron ESd 490HR | Semitron ESd 500HR | Semitron ESd 520HR

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ASTM or UL test Property Semitron® ESd 500HR
D792 Density (lb/in³)
D570 Water Absorption, 24 hrs (%) 0.03
D638 Tensile Strength (psi) 1,100
D638 Tensile Modulus (psi) 300,000
D638 Tensile Elongation at Yield (%) 10
D790 Flexural Strength (psi) 2,200
D790 Flexural Modulus (psi) 500,000
D695 Compressive Strength (psi) 4,000
D695 Compressive Modulus (psi) 250,000
D785 Hardness, Rockwell R50
D256 IZOD Notched Impact (ft-lb/in) 1.0
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
D648 Heat Deflection Temp (°F / °C)
at 264 psi

270 / 132
D3418 Melting Temp (°F / °C) 621 / 327
- Max Operating Temp (°F / °C) 500 / 260
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)

UL94 Flammability Rating V-0
D149 Dielectric Strength (V/mil) short time, 1/8" thick 390
D150 Dielectric Constant at 1 KHz 2.9
D150 Dissipation Factor at 1 KHz -
EOS/ESD S11.11 Surface Resistivity (ohms/square) 1010 - 1012

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
SEMITRON is a registered trademark of Quadrant Engineering Plastic Products.

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:

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