San Diego Plastics
2220 McKinley Avenue
National City  CA  91950
800/925-4855   619/477-4855   FAX 619/477-4874

Pomalux® SD-A
(Static-dissipative acetal copolymer) 		Download Product Brochure (60kb - pdf) 

Non-carbon-filled, permanently static dissipative material which is non-migratory and non-humidity dependent. With enhanced lubricity, Pomalux SD-A provides superior wear resistance and ease of machining. Its extremely low outgassing values and non-sloughing characteristics make it ideal for applications where particulate generation cannot be tolerated. Enhanced lubricity, chemically resistant, and dimensionally stable.

The following physical property information is based on typical values of the resin.

 
Mechanical Properties
  Units ASTM Test Result
Tensile Strength @yield psi D638 6,600
Tensile Elongation @break % D638 45.0
Flexural Strength psi D790 7,000
Flexural Modulus psi D790 210,000
Izod Impact Strength Notched ft·lbs/in D256 2.0
Izod Impact Strength Un-notched ft·lbs/in D256 no break
Hardness-Shore D - D2240 76

 
Thermal Properties
  Units ASTM Test Result
Heat Deflection Temp. @264 psi °F D648 141
Heat Deflection Temp. @66 psi °F D648 267
Coefficient of Thermal Expansion in/in/°F D696 6.5 x 10-5
Thermal Conductivity (BTU•in)/(hr•ft2•°F) - 2.10
Flam. Rating-UL94 - - HB

 
Electrical Properties
  Units ASTM Test Result
Surface Resistivity dry ohm/sq D257 109 - 1011
Volume Resistivity dry ohm/cm D257 109 - 1011
Static decay 15% RH seconds Mil-B-81705-B <0.3

 
Other Properties
  Units ASTM Test Result
Specific Gravity - D792 1.33
Water Absorption @24 hours % D570 2.50
 

 
Applications Include:
• Disk drive assembly fixtures
• Semiconductor/electronic components
• Telecommunication hardware
• Automotive equipment

 
Advantages of Pomalux® SD-A:
• Low outgassing
• Consistent resistivity values
• Ease of machining
• Good chemical resistance

Manufacturing Capabilities:
Rod: 1/8” to 4” diameter
Sheet: .030” to 4” thick
Film: .010” to .029” thick

 
Color/Grades:
Natural (beige)

 
*In addition to our standard capabilities, Westlake also has the ability to process custom resins in various sizes and colors with some exceptions.

See Also:
Pomalux® CN-F
Pomalux® CN-SS
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