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Polyethylenes offer excellent chemical resistance. good fatigue. wear and moisture resistance. Differences in the length of the polymer chain yields a wide range of properties. Polyethylenes are easy to distinguish from other plastics because they float in water.

Representing the largest portion of the polyethylene applications. HDPE offers excellent impact resistance. light weight. low moisture absorption. and high tensile strength. These physical properties in addition to its ability to be easily machined. thermoformed. and welded have led to the wide use of HDPE on food processing. packaging. and conveying equipment. HDPE is also non-toxic and non-staining and is often chosen because of its FDA approval and food contact suitability and its excellent machineability.

HDPE is actually a very popular engineering plastic and is sometimes confused with other similar materials. HDPE comes in several different grades. which delineate the purposes that the HDPE is best suited for. Normally available in two grades. 300 grade and 500 grade. the higher number denotes the density of the material and can improve on performance. The majority of HDPE is available in either black or white although 500 grade sheet is available in a range of colors. which can sometimes help with food preperation or process identification.

Brand Names

  • HiTec®
  • Playboard™
  • King Colorboard®
  • Densetec® 100
  • Densetec® 200
  • King PlastiBal 
  • Polystone® G
  • Polystone® G
  • King ColorCore®
  • Densetec® 600

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.

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At a Glance

Generic Name
High Density Polyethylene

Available In

FDA, USDA, RoHS Compliant

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet 1/4” – 3/4” 48” x 96”, 60″x96″ CTS White, Black, Colors
Other Playground Systems, Partition Board

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density g/cm^3 D792 29.4 – 28.7
Water Absorption. 24 hrs % D570 <0.01
Mechanical PropertiesUnitsASTMResults
Flexural Modulus psi D790 400000
Hardness, Shore D D785 D69
Tensile Elongation @Break % D638 20 – 1.000
IZOD Impact Strength Notched ft-lb/in D256 3
Thermal PropertiesUnitsASTMResults
Coeffcient of Linear Thermal Expansion (x 10^-5 in./in./°F) D256 6.1 – 7.2
Heat Deflection Temp at 66 psi °F D648 140 – 190
Heat Deflection Temp at 264 psi °F 110 – 130
Melting Temperature °F D3418 260
Max Operating Temp °F 180
Thermal Conductivity BTU-in/ft2-hr-°F C177 11.0 – 12.4
Electrical PropertiesUnitsASTMResults
Dielectric Strength V/mil D149 450 – 500
Dielectric Constant D150 2.30 – 2.35@1 kHz
Dissipation Factor D150 0.0003 @1 khz
Volume Resistivity. 50% RH ohm-cm D257 10^5
Arc Resistance sec D495 200 – 250
Optical PropertiesUnitsASTMResults
3mm Transparent Clear Transmittance. Total (%) % D1003 1.54
Refractive Index % D542 18537

NOTE: The property values presented above 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.


  • Pipe fittings
  • Wear plates
  • Food cutting boards
  • Hinges
  • Tanks and sinks
  • Guides and Wear plates
  • Roll stand bearings
  • Tanks and vessels
  • Restroom partitions
  • Boat accessories


  • Self Lubricating and Low Co-Efficient of Friction
  • High Chemical Resistance
  • FDA compliant
  • Low Specific Gravity (Floats in Water)
  • Good impact resistance
  • Light weight
  • Very low moister absorption
  • High Tensile strength
  • Good abrasion resistance
  • Low coefficient of friction



  • HDPE Marine Grade
  • HDPE FDA Approved Grade
  • HDPE Pipe Grade
  • UHMWPE (ultra high molecular weight PE)
  • HMWPE (high molecular weight polyethylene)
  • HDXLPE (high density cross-linked PE
  • PEX (cross-linked PE)
  • MDPE (medium density PE)
  • LDPE (linear low density PE)
  • VLDPE (very low density PE)

NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-435-8544.

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