Smiths Metal Centres High Density PE
- Chemical Family
- PolyethylenesPolyolefins
Smiths Metal Centers High Density PE is a high-quality general purpose engineering plastic materials. Its chemical name is polyethylene. It’s available in a range of grades and forms to suit many applications.
Properties
- Physical Form
- Bars, Rods, Sheets
- Bars
- Rods
- Sheets
- 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.
Other characteristics
- Color
- Black, Natural
- Black
- Natural
- Density
- 950.0 - 950.0 kg/m³
- Features
Abrasion Resistant, Chemical Resistant, Dimensional Stability, Food Contact Acceptable, Good Impact Strength, Good Machinability, Good Toughness, Good UV Resistance, Low Moisture Absorption
- Polymer Name
- High Density Polyethylene (HDPE)
- Tensile Modulus
- 1150.0 - 1150.0 MPa
- Markets
- Building & Construction
- Consumer Goods
- Electrical & Electronics
- Healthcare & Pharma
- Industrial
- Flame Rating
- UL 94 HB
- Technology
- Plastics
- 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.
- Labeling Claims
- Food Contact Acceptable
- Product Families
- Plastics — Parts, Shapes & Films
- Material Features
- Abrasion Resistant
- Chemical Resistant
- Dimensional Stability
- Food Contact Acceptable
- Good Impact Strength
- Good Machinability
- Good Toughness
- Good 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.
- Availability
* Sizes not stocked are available on relatively short delivery time. 1, 2 or 3m lengths supplied or cut to customer requirements.
Technical data
Table 1 of 5
10 rows| Characteristic | Value | Unit |
|---|---|---|
| Density (20°C) | 0.95 | g/cm^³ |
| Tensile Strength at Yield | 27.0 | MPa |
| Tensile Strength at Break | 35.0 | MPa |
| Elongation at Yield | 9.0 | % |
| Elongation at Break | min. 700 | % |
| Tensile Modulus of Elasticity | 1150.0 | MPa |
| Flexural Strength | 22.0 | MPa |
| Impact Strength | No break | kJ/m^² |
| Notched Impact Strength | 29.0 | kJ/m^² |
| Hardness | 64.0 | Shore D |
Table 2 of 5
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Vicat Softening Point | 80.0 | ºC | VST/B/50 |
| Vicat Softening Point | 129.0 | ºC | VST/A/50 |
| Heat Deflection Temperature | 69.0 | ºC | Method B |
| Coefficient of Thermal Expansion | 1.5 | 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 | -50.0 | ºC | — |
Table 3 of 5
2 rows| Characteristic | Value | Method |
|---|---|---|
| Moisture Absorption | 0.01 | ISO 62 |
| Friction Co-efficient | 0.3 | — |
Table 4 of 5
5 rows| Characteristic | Value | Unit |
|---|---|---|
| Volume Resistivity | min. 10^¹⁵ | ohm-cm |
| Surface Resistivity | min. 10^¹⁶ | ohm |
| Dielectric Constant (1 MHz) | 2.35 | — |
| Dielectric Loss Factor (1 MHz) | 0.0003 | — |
| Dielectric Strength | 17.0 | kV/mm |
Table 5 of 5
1 row| Characteristic | Value | Method |
|---|---|---|
| Flammability | HB | UL94 |
