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LUBMER™ LS4140 UHMWPE Granules

Grade: LUBMER™ LS4140
Formula: UHMWPE, HMPE, HPPE
Form: Granule
Material: Ultra-high-molecular-weight polyethylene (UHMWPE, HMPE)
CAS Number: 9002-88-4
Commodity: Polymers
Nominal Granule Size: 3mm
LUBMER™ LS4140 UHMWPE Granules are a polymer available in a choice of 10 variations. Made from ultra-high molecular weight polyethylene, they offer properties such as high impact strength, low friction and chemical resistance. These granules are suitable for industrial applications like chute linings, hoppers and conveyor systems. They also have scientific uses in custom polymer processing and compounding research.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good-Fair
Acids - dilute Good
Alcohols Good
Alkalis Good
Aromatic hydrocarbons Fair
Greases and Oils Good-Fair
Halogenated Hydrocarbons Fair-Poor
Halogens Fair-Poor
Ketones Good-Fair
Mechanical Properties
Element Value
Coefficient of friction 0.1-0.2
Hardness - Rockwell R50-70
Poisson's ratio 0.46
Elongation at break( % ) 500
Tensile modulus( GPa ) 0.2-1.2
Izod impact strength( J m⁻¹ ) 1000
Tensile strength( MPa ) 20-40
Electrical Properties
Element Value
Dielectric constant @1MHz 2.3
Dissipation factor @ 1MHz 1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ ) 28
Surface resistivity( Ohm/sq ) 10¹³
Volume resistivity( Ohmcm ) 10¹⁸
Physical Properties
Element Value
Flammability HB
Radiation resistance Fair
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 17
Water absorption - over 24 hours( % ) 0.01
Density( gcm⁻³ ) 0.94
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 69
Heat-deflection temperature - 1.8MPa( C ) 42
Upper working temperature( C ) 55-95
Specific heat( J K⁻¹ kg⁻¹ ) 1900
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.42-0.51@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 130-200

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