P.O. Box 127 Lenni, PA.
1·800·999·1700    1·610·459·1000
Fax: 610·459·1084		 West Coast Office
1·800·440·0597    1·714·632·7944
Fax: 714·632·7945
 
 
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Pomalux® SD-A
(Static-dissipative acetal copolymer) 		Download Product Brochure (60kb - pdf) 

Non-carbon-filled, permanently staticdissipative 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.

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

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

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

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

 

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.