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Materials

Thermoplastics

UHMW is a high-performance plastic that is a good choice for fabricated parts to be used in industrial applications

UHMW (Ultra-High-Molecular-Weight Polyethylene)

  • Non-toxic
  • Low coefficient of friction
  • Corrosion, abrasion, wear and impact resistant
  • Extremely low water absorption
  • FDA and USDA approved

Characteristics

UHMW offers a combination of exceptional properties. It is tough with superior impact strength. It is corrosion-resistant and exhibits virtually no water absorption. It is also wear-resistant, non-sticking and self-lubricating.

UHMW is an excellent choice for many industrial applications. It reduces noise and vibration, is chemical-resistant and non-toxic and offers excellent mechanical properties even in cryogenic conditions.

Applications

  • Chute linings
  • Food processing parts
  • Chemical tanks
  • Conveyor guides
  • Wear pads

Questions?

Our application engineers can help. With decades of experience in plastic material selection, we'll help you choose the optimal plastic for your application and budget.

To compare
the cost of this material to other thermoplastics, click here.

General Material Properties

Property   Metric units   English units
General    
Density   931 - 949 kg/m^3   0.0336 - 0.0343 lb/ft^3
Mechanical    
Yield Strength   2.14e7 - 2.76e7 Pa   3.1 - 4.0 ksi
Tensile Strength   3.86e7 - 4.83e7 Pa   5.6 - 7.01 ksi
Elongation   3.5 -5.25 % strain   350 - 525 % strain
Hardness (Vickers)   6.28e7 - 8.14e7 Pa   6.4 - 8.3 HV
Impact Strength (notched)   9.52e4 - 1.05e5 J/m^2   45.3 - 50 ft.lbf/in^2
Fracture Toughness   1.72e6 - 5.16e6 Pa/m^0.5   1.56 - 4.69 ksi/in^0.5
Young's Modulus   8.94e8 - 9.63e8 Pa   0.13 - 0.14 10^6 psi
Thermal    
Max Service Temperature   110 - 130 °C   230 -266 °F
Melting Temperature   125 - 138 °C   257 - 280 °F
Insulator or Conductor   Insulator   Insulator
Specific Heat Capability   1.75e3 - 1.81e3 J/kg °C   0.418 - 0.432 BTU/lb. °F
Thermal Expansion Coefficent   2.34e-4 - 3.6e-4 strain/°C   130 - 200 µstrain/°F
Eco    
CO2 Footprint   3.16 - 3.49 kg/kg   3.16 - 3.49 lb/lb
Recycleable   Yes   Yes

The information on this page is intended as general guidance only and is only accurate at the time of posting (see date below). Specific material properties vary by manufacturer. Please contact a Dielectric application engineer for help in choosing the optimal material for your application and budget.

Posting Date: August 16, 2012