GEHR Plastics PE-UHMW Polyethylene, Ultra High Molecular Weight
Categories: Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE); UHMW PE (Ultra High Molecular Weight PE)
Material Notes: The ultra high molecular weight Polyethylene has a high abrasion resistance and a high toughness at the same time. The chemical and the crack resistance are optimized in comparison to the standard PE-HD. The operating temperature if PE-UHMW is -150°C to 90°C

Properties:

  • low density
  • high toughness
  • high elongation
  • very good electrical and dielectric properties
  • very low water absorption
  • low steam permeability
  • high chemical resistance
  • good protection against stress cracking
  • food safe
  • soft surface
  • HF welding not recommended
  • natural color is not weather resistance
Applications
  • pumping and valve parts
  • gaskets
  • glide profiles
  • food industry parts
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 0.930 g/cc0.930 g/ccISO 1183
Moisture Absorption at Equilibrium 0.010 %0.010 %ISO 62
Water Absorption at Saturation 0.50 %0.50 %ISO 62
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 63>= 63ISO 868
Ball Indentation Hardness 38.0 MPa5510 psiISO 2039
Tensile Strength at Break 40.0 MPa5800 psiISO 527
Tensile Strength, Yield 20.0 MPa2900 psiISO 527
Elongation at Break >= 50 %>= 50 %ISO 527
Elongation at Yield 20 %20 %ISO 527
Modulus of Elasticity 0.760 GPa110 ksiISO 527
Flexural Strength 27.0 MPa3920 psiISO 178
Charpy Impact Unnotched NBNBISO 179
Charpy Impact, Notched <= 14.0 J/cm²<= 66.6 ft-lb/in²ISO 179
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+13 ohm-cm>= 1.00e+13 ohm-cmIEC 60093
Surface Resistance >= 1.00e+13 ohm>= 1.00e+13 ohmIEC 60093
Dielectric Constant 3.0
@Frequency 1e+6 Hz		3.0
@Frequency 1e+6 Hz		IEC 60250
Dielectric Strength 45.0 kV/mm1140 kV/inIEC 60243-1
Dielectric Loss Index 0.0010
@Frequency 1e+6 Hz		0.0010
@Frequency 1e+6 Hz		IEC 60250
Comparative Tracking Index 600 V600 VIEC 60112
 
Thermal PropertiesMetricEnglishComments
CTE, linear 200 µm/m-°C111 µin/in-°FISO 11359
Thermal Conductivity 0.410 W/m-K
@Temperature 20.0 °C		2.85 BTU-in/hr-ft²-°F
@Temperature 68.0 °F		ISO 22007-4
Melting Point 133 °C271 °FDIN EN ISO 3146
Maximum Service Temperature, Air 90.0 °C194 °FUL 746B
Deflection Temperature at 0.46 MPa (66 psi) 65.0 °C149 °FISO 75
Deflection Temperature at 1.8 MPa (264 psi) 42.0 °C108 °FISO 75
Vicat Softening Point 80.0 °C176 °FVST/B/50; ISO 306
Minimum Service Temperature, Air -150 °C-238 °FUL 746B
Flammability, UL94 HBHBtest results without UL registration; UL 94
Oxygen Index 18 %18 %ASTM D2863
 
Compliance PropertiesMetricEnglishComments
FDA YesYesPhysiological indifference
 
Descriptive Properties
Acid Resistanceyes
Aromatic Resistancelimited
Bondabilityno
Chemical ResistanceDIN 8075
CKW Resistanceno
Colornatural
Hydrocarbonate Resistanceyes
Hydroxide Resistanceyes
Ketone Resistancelimited
Physiological indifferenceyes, EEC
Resistance Against Hot Waterlimited
UV Stabilizationno

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.