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

Pomalux®
(acetal copolymer)
Download Product Brochure (47kb - pdf) 

Pomalux is a high-performance acetal copolymer that has excellent mechanical, electrical, and wear properties. It is engineered to provide outstanding dimensional stability, even when machining parts with complex geometries. Pomalux is an excellent choice for many bearing and wear applications since it has low coefficient of friction and wears well in both wet and dry environments. It is widely used for assembly jigs and fixtures because of its inherent dimensional stability and excellent wear properties. Pomalux is often specified for electrical applications when low moisture absorption and high dielectric strength are required. Both natural (white) and black Pomalux are FDA compliant for use in food processing machinery.

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

 
Mechanical Properties
  Units ASTM Test Unfilled 25% GF
Flexural Modulus psi D790 370,000 1,050,000
Hardness-Rockwell - D785 M80 M84
Izod Impact Strength Notched @-40°F ft•lbs/in D256 1.2 0.7
Izod Impact Strength Notched @73°F ft•lbs/in D256 1.5 1.1
Tensile Elongation @break @ -40°F % D638 - 2.0
Tensile Elongation @break @ 73°F % D638 - 3.5
Tensile Elongation @break @ 160°F % D638 - 5.0
Tensile Modulus psi D638 380,000 1,200,000
Tensile Strength @yield @ 73°F % D638 - 16,000
Tensile Strength @yield @ -40°F % D638 8600 23,100
Tensile Strength @yield @ 160°F % D638 - 10,000

 
Thermal Properties
  Units ASTM Test Unfilled 25% GF
Continuous Use Temp. °F D794 212 -
Coefficient of Thermal Expansion in/in/°F D696 - 2.2x10-5
Flam. Rating-UL94 @ .060" - - HB -
Heat Deflection Temp. @ 66 psi °F D648 315 331
Heat Deflection Temp. @ 264 psi °F D648 219 325

 
Other Properties
  Units ASTM Test Unfilled 25% GF
Specific Gravity - D792 1.40 1.62
Water Absorption @ 24 hrs % D570 0.20 0.27
Dielectric Constant 1e+006 Hz D150 3.80 -
 

 
Applications Include:
• Jigs and fixtures
• Pump and valve parts
• Bushings
• Bearings
• Gears
• Wear pads
• Electrical components

 
Advantages of Pomalux®:
• High strength and stiffness
• Low friction
• Easy to machine
• Good dimensional stability
• Low moisture absorption
• Resists abrasive wear in both wet and dry environments
• Good chemical resistance
• Excellent electrical properties
• FDA compliant

Manufacturing Capabilities:
Rod: 1/8” to 8” diameter
Sheet: .030” to 4” thick
Film: .002” to .029” thick

 
Color/Grades:
Natural (white) FDA
Black FDA
Glass-filled
PTFE-filled (Dielux)
Non-standard colors are available on a custom basis

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

 
Pomalux® is a Registered Trademark of Westlake Plastics Co.

 


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