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UHMWPE (Ultra High Molecular Weight Polyethylene) is a very tough material, with the highest impact strength of any thermoplastic presently made.
Why using UHMWPE as the perfect material of chain guide rail?
Very high impact strength
Exceptionally low friction and high abrasion resistance
Low water absorption, almost zero
Excellent chemical and oil resistance
High operating temperature, best character for high speed
Lower cost than steel
Processing Equipment:
CNC cutting machine
CNC planing machine
CNC engraving machine
CNC machine tool
| Material Properties | Standard | Unit | Value |
| Average molecular weight | g /mol | Approx 4.5*106 | |
| Density | ISO1183 | Kg/m3 | 922-942 |
| Water absorption at 23℃until saturation | ISO62 | % | <0.01 |
| Material Properties | Standard | Unit | Value |
| Tensile stress at yeild (tensile strength) | ISO527 | MPa | ≥17 |
| Enlongation at break | ISO527 | % | ≥300 |
| Tensile modulus | ISO527 | MPa | ≥700 |
| Impact strength (Charpy)at 23℃ | ISO179 | Kj/m2 | No break |
| Notched impact strength (Charpy)at 23℃ | ISO11542-2 | Kj/m2 | ≥80 |
| Ball indentation hardness | ISO2039-1 | N/mm2 | 30-35 |
| Shore-Hardness D,15 s value | ISO868 | 60-65 | |
| Coefficient of friction | Approx.0.2 | ||
| Abrasion(Sand-Slurry) | 80 | ||
| Themal properties | Standard | Unit | Value |
| Melting point DSC ,10k/min | ISO3146 | ℃ | 135-138 |
| Vicat softening point | ISO306 | ℃ | 80 |
| Coefficient of linear themal expansion Between 23 and 80℃ | ISO11359 | K-1 | approx 2*10-4 |
| Themal conductivity | ISO52612 | W/[m*k] | approx 0.4 |
| Use Temperature (max.) | ℃ | 80 | |
| Use Temperature (briefly) | ℃ | 90 | |
| Use Temperature (min.) | ℃ | -200 | |
| Electrical properties | Standard | Unit | Value |
| Relative permitivity at 100 Hz | IEC 60250 | - | 2.1 |
| Dissipation factor at 100 Hz | IEC60250 | - | 3.9*10-4 |
| Volume resistivity | IEC60093 | Ohm*m | >1012 |
| Surface resistivity | IEC60093 | Ohm | >1012 |
| Dielectric strength | IEC60243 | KV/mm | 45 |