Ultra High Molecular Weight Polyethylene (UHMW-PE)
M.A.R.S. Marine’s products are constructed of UHMW-PE, the toughest of all plastics known! With molecular weight of 3-6 million (compared to pipe grade high-density polyethylene with a molecular weight of 60,000) it demonstrates extreme wear resistance, even better than steel (see Sand Slurry Test Results below).
M.A.R.S. SHRINK-TITE™ Piling Sleeves Sand Slurry Test
|Specification||Units||Test Standard||M.A.R.S. Value|
|Tensile strength at yield 73°F||psi||ASTM D638||3100|
|Elongation 73°F||%||ASTM D638||350|
|* Relative volumetric abrasion loss||*||*||100|
|Coefficient of friction 73°F on steel||–||–||Static: 0.15-0.20
|IZOD impact strength 73°F||KJ/m2||ASTM D4020-96||125|
|Hardness 73°F||–||ASTM D785||Shore: D62-66|
|Melting point||°F||ASTM D789||275°-280°|
|Coefficient of linear thermal expansion||1/K||ASTM D696||2.0 x 10-4|
|Continuous service temperature in air (max)||°F||–||180°|
|Volume resistivity||Ohm/cm||ASTM D257||>1015|
 Industry standard testing method, using slurry of 60% aluminium oxide and 40% water at a rotation speed of 1750 rpm for 2 hours. Results indicate the ability of each material, in relation to Natural (=100), to resist abrasion under typical UHMW-PE applications. A lower number indicates better abrasion resistance.