Boedeker Plastics, Inc. Logo -- boedeker plastics supply shiner
   texas tx usa boedeker plastics material supply shiner texas usa plastics
   distributor plastics sales plastics supply plastics machine shop

Semitron® ESd 225
Static Dissipative Acetal 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

blue line

click to resize photo Semitron® ESd 225 is a static dissipative acetal. This material has the same general properties as unfilled acetal, but with static dissipative properties throughout -- resistivity in the range of 1010 to 1012. It may be used to temperatures of 225°F (107°C) without degradation. Semitron® ESd 225 offers broad chemical resistance and good wear resistance. This material is available in sheet and rod forms and is  NATURAL (tan or ivory)   in color.

( see also Standard Acetal or Tecaform SD and Pomalux SD/CN Static-Dissipative Acetals )

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

blue line


ASTM or UL test Property Semitron® ESd 225
D792 Density (lb/in³)
D570 Water Absorption, 24 hrs (%) 2.0
D638 Tensile Strength (psi) 6,100
D638 Tensile Modulus (psi) 225,000
D638 Tensile Elongation at Yield (%) 10
D790 Flexural Strength (psi) 6,000
D790 Flexural Modulus (psi) 190,000
D695 Compressive Strength (psi) -
D695 Compressive Modulus (psi) -
D785 Hardness, Rockwell M74 / R109
D256 IZOD Notched Impact (ft-lb/in) 1.5
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
D648 Heat Deflection Temp (°F / °C)
at 264 psi

225 / 107
D3418 Melting Temp (°F / °C) - / -
- Max Operating Temp (°F / °C) 180 / 82
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)

UL94 Flammability Rating HB
D149 Dielectric Strength (V/mil) short time, 1/8" thick 275
D150 Dielectric Constant at 1 KHz 4.3
D150 Dissipation Factor at 1 KHz -
EOS/ESD S11.11 Surface Resistivity (ohms/square) 109 - 1010

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

blue line

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:

©     Copyright Boedeker Plastics, Inc.