UHMW Liners – UHMW sheet is often used for lining chutes and hoppers to protect metal surfaces and to keep solid materials like sand, wood chips, or coal moving smoothly.
UHMW Parts – Easy to fabricate, UHMW is also used for packaging, conveyor, and food processing machinery parts including star wheels, idler sprockets, and under-chain wear strips.
UHMW Wood Replacement – UHMW offers very low moisture absorption and is a popular choice for marine construction applications like dock fender pads, pile guards, and anti-skid walkways. UHMW does not corrode, rot, or splinter like wood.
UHMW Grades – Several grades of UHMW are available, including reprocessed, enhanced bearing and wear, and FDA compliant.
Tech Tip – Ultra high molecular weight polyethylene has a relatively high coefficient of thermal expansion. This may make it difficult to hold tight tolerances on UHMW parts that will be exposed to changing temperatures.
PE500 is available for many different applications, particularly in mechanical engineering and the foodstuffs industry.
| UNITS | ASTM TEST | HOMOPOLYMER ACETAL | COPOLYMER ACETAL | TECAFORM® HPV13 PTFE-FILLED ACETAL | 20% GLASS FIBER FILLED HOMOPOLYMER ACETAL | |
| Tensile strength | psi | D638 | 10,000 | 9,800 | 6,800 | 8,500 |
| Flexural modulus | psi | D790 | 420,000 | 370,000 | 350,000 | 730,000 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 1.5 | 1.0 | 0.7 | 0.8 |
| Heat deflection temperature @ 264 psi | °F | D648 | 257 | 230 | 244 | 316 |
| Maximum continuous service temperature in air | °F | 185 | 195 | 185 | 185 | |
| Water absorption (immersion 24 hours) | % | D570 | 0.25 | 0.20 | 0.22 | 0.25 |
| Coefficient of linear thermal expansion | in/in/ °Fx10-5 | D696 | 6.8 | 6.1 | 5.1 | 2.0 - 4.5 |
| Coefficient of friction (dynamic) | 0.20 | 0.21 | 0.12 | 0.35 |
