HMWPE 500

High Molecular Weight Polyethylene

Industrial plastic High Molecular Weight Polyethylene (HMWPE) is an unfilled high molecular weight polyethylene offering high abrasion and wear resistant material.

In comparison to HDPE 300, it offers superior wear resistance and impact strength. As well as its excellent chemical resistance, low temperature resistance and low moisture absorption, this material is extremely strong.
 

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Unique features

  • Good mechanical properties
  • Very wear, cutting and scratch resistant
  • Physiologically safe

Applications

  • Beverage and goods industry
  • Food processing industry
  • Harbour construction
  • Materials handling industry
  • Mechanical engineering
  • Packaging industry

Machining options

  • Machining (routing, milling, turning)
  • Welding
  • Waterjet cutting
  • Laser beam cutting
  • Warm bending
  • Gluing
  • Thermoforming
  • Yes
  • Not in all cases
  • No

What are the main technical properties of HMWPE 500?

HMWPE is normally a black, natural or coloured plastic.  It is often calendered and pressed which will leave lines on the top and bottom of the sheet.

It is a stiff material which can be bent and may take time to return to its original shape. It is also light and will float in water.

If you burn a sample of HMWPE it is non self extinguishing and will give off molten droplets which ususally go out when they reach the bench or floor. The flame will be blue with a yellow tip and just a little smoke and the smell will be that from a candle or paraffin.

How do you identify HMWPE 500

HMWPE 500 is a high molecular weight polyetheylene that is moisture repellent and has good abrasion and impact resistance. Because of this HMWPE is often used for abrasion resistant components in the conveyor and materials handling industries. Its moisture resistance also means it is regularly used in food preparation systems and for chopping boards, although this will require specific food contact grades for direct food contact.

HMWPE is a popular construction material for containers for liquids and food, due to its good ductility, good chemical resistance, food-safety and the fact it can be easily welded.

Technical information

  • General
    Description Norm Unit Value
    Density DIN EN ISO 1183-1 g/cm³ 0.95
    Water absorption DIN EN ISO 62 % <0.01
    Flammability UL 94   HB
  • Mechanical
    Definition Norm Unit Value
    Yield stress DIN EN ISO 527 MPa >27
    Elongation at break DIN EN ISO 527 % >50
    Tensile modulus of elasticity DIN EN ISO 527 MPa >1200
    Shore hardness DIN EN ISO 868 scale D 65
  • Electrical
    Definition Norm Unit Value
    Dielectric constant IEC 60250   2.3
    Dielectric dissipation factor (106 Hz) IEC 60250   0.0002
    Volume resistivity DIN EN 62631-3-1 Ω* cm >1014
    Surface resistivity DIN EN 62631-3-2 Ω >1014
    Comparative tracking index IEC 60112   600
    Dielectric strength IEC 60243 kV/mm >40
  • Thermal
    Definition Norm Unit Value
    Melting temperature ISO 11357-3 °C 130 ... 135
    Thermal conductivity DIN 52612-1 W/(m*K) 0.40
    Thermal capacity DIN 52612 kJ/(kg*K) 1.90
    Coefficient of linear thermal expansion DIN 53752 10-6/K 150 ... 230
    Service temperature, long-term Average °C -100 ... 80
    Service temperature, short-term Average °C 80
    Vicat softening temperature DIN EN ISO 306, Vicat B °C 79