San Diego Plastics
2220 McKinley Avenue
National City  CA  91950
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Pomalux®
(acetal copolymer)
Download Product Brochure (21kb - pdf) 

Medical grade Pomalux is made from acetal copolymer resin which allows machined products the ability to retain dimensional integrity, maintain stability in water and most chemicals at elevated temperatures. Pomalux products are opaque and are available in a wide array of standard colors as well as on a custom basis. Recommended sterilization techniques for Pomalux include EtO gas and steam autoclaving. Disinfectants and germicides generally have no effect on Pomalux, however, acidic solutions can degrade the polymer.

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

 
Mechanical Properties
  Units ASTM Test Result
Compressive Strength @ 1% deflection psi D695 4,500
Compressive Strength @ 10% deflection psi D695 16,000
Fatigue Endurance (limit @107 cycles) psi D671 4,000
Flexural Modulus psi D790 375,000
Flexural Yield Strength @5% deform. psi D790 13,000
Hardness-Rockwell - D785 M78
Izod Impact Strength Notched @ 73°F ft·lbs/in D256 1.5
Shear Strength psi D732 7.7
Tensile Elongation @break % D638 75.0
Tensile Impact ft·lbs/in2 D1822 90
Tensile Modulus psi D638 380,000
Tensile Strength @yield psi D638 8,800

 
Thermal Properties
  Units ASTM Test Result
Coefficient of Thermal Expansion in/in/°F D696 4.5 TO 6.1 X 10-5
Heat Deflection Temp. @66 psi °F D648 316
Heat Deflection Temp. @264 psi °F D648 230
Thermal Conductivity (BTU•in)/(hr•ft2•°F) C177 1.6
Flammability Rating–UL94 @0.60” - - HB

 
Other Properties
  Units ASTM Test Result
Specific Gravity - D792 1.41
Water Absorption @24 hours % D570 0.22
 

 
Applications Include:
• Provisional trials
• Instrument handles
• Medical device components

 
Advantages of Pomalux® med:
• Lot controlled and traceable
• Resin complies with FDA regulations 21 CFR 177.2470 and 21 CFR 178.3297 for colorants
• Resin meets the requirements of USP Class VI specifications
• Stress relieved
• Laser markable

Manufacturing Capabilities:
Standard:
Rod: 1” to 4” diameter-colors (1/2” increments)
1” to 4” diameter-black (1/4” increments)
Rod lengths: 1”to 2” diameter - 96”
21/2” to 4” diameter - 48”
Non-Standard:
Rod: 1/2” to 6” diameter
Sheet: .060” to 3/16” thick
Slab: 1/4” to 4” thick
Film: .002” to .029” thick

 
Color/Grades:
Standard: Black, brown, dark blue, dark green, gray, light blue, light green, red, rust and yellow.

 
*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.

Also see:
Pomalux B


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