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Sustarin® Acetal (PolyOxy-Methylene) Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


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Sustarin Acetal Material (c) Boedeker Plastics 2009 Acetal is the common name for a family of thermoplastics with the chemical name "PolyOxy-Methylene". Acetal is a general-purpose plastic material suitable for a wide range of mechanical and engineering applications.

Sustarin ® C Acetal Copolymer exhibits high-strength characteristics and excellent thermal properties. This material has very low moisture absorption and thermal expansion, combined with good performance at moderate temperatures.

Sustarin ® H Acetal Homopolymer is a tough, very strong product exhibiting extremely low cold flow and thermal properties. Good dimensional stability make this material suitable for a wide range of applications.

Sustarin acetal materials are available from stock in  NATURAL . and  BLACK  colors.

• Bearings • Bushings • Gears • Valves • Valve Seats, • Couplings • Rollers • Seals • Washers • Clamps • Pump Components • Snap Connectors

( see also General Purpose Acetal and Sustarin C MDT Metal-Detectable Acetal Datasheet Specifications. )

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ASTM or UL test Property Sustarin C
Sustarin H
D792 Density (lb/in³)
D570 Water Absorption, 24 hrs (%) 0.2 0.2
D638 Tensile Strength (psi) 9,800 10,400
D638 Tensile Modulus (psi) 440,000 455,000
D638 Tensile Elongation at Break (%) 30-60 25-60
D790 Flexural Strength (psi) 13,800 13,950
D790 Flexural Modulus (psi) 397,000 380,000
D785 Hardness, Rockwell R119-R122 R120
D256 IZOD Impact Notched (ft-lb/in) 1.5 1.5
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
5.8 5.80
D648 Heat Deflection Temp (°F / °C)
at 264 psi

320 / 160

322 / 161
- Max Operating Temp (°F / °C) 194 / 90 212 / 100
C177 Thermal Conductivity
(x 10-4 cal/cm-sec-°C)


UL94 Flammability Rating HB HB
D149 Dielectric Strength (V/mil) short time, 1/8" thick 1600 2000
D150 Dielectric Constant at 1 MHz 3.8 3.8
D150 Dissipation Factor at 1 MHz 0.002 0.005
D257 Volume Resistivity (ohm-cm) at 50% RH 1015 1015

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.
SUSTARIN is a registered trademark of Röchling Sustaplast.
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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:

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