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Physical Properties for UHMW Board Stock & Angle

UHMW

Mechanical
PropertyASTM TestUnits Metric(US)Typical Values
DensityD 792gm/cm30.926-0.934
Tensile strength @ YieldD 638MPa (psi)21(3,100)
Tensile strength @ BreakD 638MPa (psi)48(7,000)
Elongation @ BreakD 638%350
Youngs (“E”) Modulus (23°C)D 638MPa(psi X 105)690(1.0)
Youngs (“E”) Modulus (-269°C)D 638MPa(psi X 105)2,970(4.3)
Izod Impact Strength (23°C)D 256 (1)J/m(ft-lb/in notch)140(30)
Izod Impact Strength (-40°C)D 256 (1)J/m(ft-lb/in notch)100(21)
Hardness, Shore “D”D 2240-62-66
Abrasion Resistance(2)-100
Water AbsorptionD 570%Nil
Relative Solution ViscosityD 4020dl/gm2.3-3.5
  1. Izod Impact Strength: samples have two (15° ± 1/2°) notches on opposite sides to a depth of 5 mm.
  2. Abrasive wear is measured in the laboratory by a “sand/water-slurry test”, in which a sample is rotated at high velocity in a sand/water slurry for 24 hours. The following table gives an indication of the abrasion resistance of DURAVAR UHMW polymer. A value of 100 was designed for the amount of volumetric abrasion loss to UHMW specimen. The values shown for other materials are their relative loss compared to DURAVAR. The higher the figure, the greater the abrasion loss.
  • DURAVAR (UHMW-PE): 100
  • Acetal Copolymer (POM): 700
  • Stainless Steel: 160
  • Polyvinyl Chloride (PVC): 920
  • Polytetrafluoroethylene(PTFE): 530
  • Polymethylmethacrylate(PMMA): 1,800
  • PTFE(25% Glass Fiber): 570
  • Phenolic Resin (PF): 2,500
  • Low Density polyethylene (LDPE): 600
  • Beechwood: 2,700
  • Polypropylene (PP): 660
  • Epoxy Resin (EP): 3,400
Thermal
PropertyASTM TestUnits Metric(US)Typical Values
Crystalline Melting Range, PowderPolarized Microscope°C(°F)138-142(280-289)
Coefficient of Linear Expansion
20 to 100°CD696K-1~2 X 10-4
-200 to -100°CD696K-1~0.5 X 10-4
Electrical
PropertyASTM TestUnits Metric(US)Typical Values
Volume ResistivityD 257O cm>5 X 1016
Dielectric StrengthD 149KV/cm (V/mil)900(2,300)
Dielectric ConstantD 150-2.30
Dissipation FactorD 150
At 50 Hz-1.9 X 10-4
103Hz-0.5 X 10-4
105Hz-2.5 X 10-4

Comparison of Dynamic Coefficient of Friction on Polished Steel

PropertyUHMW-PENylon 6Nylon 6/6Nylon/MoS2PTFEAcetal Copolymer
Dry0.10 - 0.220.15 - 0.400.15 - 0.400.12 - 0.200.04 - 0.250.15 - 0.35
Water0.05 - 0.100.14 - 0.190.14 - 0.190.10 - 0.120.04 - 0.080.10 - 0.20
Oil0.05 - 0.080.02 - 0.110.02 - 0.110.08 - 0.100.04 - 0.050.05 - 0.10

General Machining Guidelines

  • Cutting: Band Saw: 3,300 – 6,600 ft./min. circular saws: 10,000 – 13,000 ft/min.
  • Turning: Up to 2,000 ft/min.

Note: Higher cutting, turning, and drilling speeds may require compressed air, water, or cutting oil for cooling.The information herein contained is based upon data believed to be thoroughly reliable, but no guaranty or warranty with respect to accuracy or completeness or product result is implied and no liability is assumed. It is the responsibility of the user to verify suitability of the material for their particular use or purpose. In view of the many uses of this material and the different equipment and processing techniques used, we cannot guarantee results in specific instances. No statement contained herein should be construed as a recommendation or license to use our products in a manner that would constitute infringement of any patent.

Title: Physical Properties for UHMW Board Stock & Angle
Description: Physical, Mechanical, Electrical and Thermal Typical Properties.
Published: 1/27/2009
Last Edited: 1/12/2023
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