Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Features & Benefits
Product Attributes Customer Benefits - Range of grades available.
- Able to resist very high impact loads
- Excellent chemical resistance
- Natural product may be used in contact with foodstuffs (subject to appropriate limits)
- HDPE may be hot air welded.
- UHMWPE is resistant to extreme abrasion
- Low density - compared with other engineering plastics
- Minimal absorption of moisture
- Diameter (HD-PE)
- Product sourced from longstanding manufacturer with ISO accreditation
- Correct grade selection for each application is optimized
- Very good all-round product for diverse engineering applications
- Low cost assembly.
- Long wear life.
- Easy handling, low inertia, saving energy
- Aids dimensional stability
- Huge components are possible.
- Consistent quality ensures uniform machining & performance
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Typical Applications
Ultra-high-molecular-weight PE (UHMW-PE) - For pump & valve parts, gaskets, glide profiles, parts for the food industry.
- Machinability
The machining of polyethylene is uncomplicated provided the component tolerances allow for polyethylene’s relatively high co-efficient of thermal expansion and tensile elongation values.
Properties
- Color
- Physical Form
- Mechanical Properties
Value Units Test Method / Conditions Density (20°C) 0.93 g/cm^³ - Tensile Strength at Yield 17.0 MPa - Tensile Strength at Break 40.0 MPa - Elongation at Yield min. 20 % - Elongation at Break min. 50 % - Tensile Modulus of Elasticity 600.0 MPa - Flexural Strength 27.0 MPa - Impact Strength No break kJ/m^² - Notched Impact Strength No break kJ/m^² - Ball Indentation Hardness / Rockwell 35.0 N/mm^² - Hardness 51.0 Shore D - - Thermal Properties
Value Units Test Method / Conditions Vicat Softening Point 80.0 ºC VST/B/50 Heat Deflection Temperature 65.0 ºC Method B Heat Deflection Temperature 42.0 ºC Method A Coefficient of Thermal Expansion 2.0 10^⁻⁶ .K^⁻¹ - Thermal Conductivity (20°C) 0.42 W/(m.K) - Service Temperatures without High Mech. Load - Upper Limit 90.0 ºC - Service Temperatures without High Mech. Load - Lower Limit -150.0 ºC - - Typical Properties
Value Units Test Method / Conditions Moisture Absorption 0.001 - ISO 62 Friction Co-efficient 0.25 - - - Electrical Properties
Value Units Test Method / Conditions Volume Resistivity max. 10^¹⁴ ohm-cm - Surface Resistivity max. 10^¹² ohm - Dielectric Constant (1 MHz) 3.0 - - Dielectric Loss Factor (1 MHz) 0.0001 - - Dielectric Strength 45.0 kV/mm - Tracking Resistance KB min. 600 V IEC 60112 - Flammability
Value Units Test Method / Conditions Flammability HB - UL94
Regulatory & Compliance
- Certifications & Compliance
- Physiological Safety
The FDA (US Food & Drug Administration) has approved the raw materials used for both the HD-PE and UHMWPE grades to allow their use in contact with food – check for any specific limitations required by the FDA.
Technical Details & Test Data
- Technical Description
Grade Modification Purpose Ultra-high-molecular-weight PE (UHMW-PE or 1000 grade)
None. Colors natural black, green. Component identification. Black will have better UV resistance. - Chemical Resistance
HD-PE has extremely good resistance to aqueous solutions of acids, alkalis and salts. Also alcohol and many solvents. Slight swelling may be caused by permanent contact with grease, oil and wax, but generally not enough to limit the use of the material. Aromatics and halogenated hydrocarbons will cause a reduction in useful working life. The material has no resistance to strong oxidizing agents such as nitric or chromic acids, and halogens. The UHMWPE grade has even better chemical resistance; strong oxidizing agents only cause surface swelling.
Packaging & Availability
- Product Availability
UHMW-PE 20mm to 200mm in natural, black and green. ≤ 2m lengths * Sizes not stocked are available on relatively short delivery time. 1, 2 or 3m lengths supplied or cut to customer requirements.