San Diego Plastics
2220 McKinley Avenue
National City  CA  91950
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UHMW POLYETHYLENE

PHYSICAL PROPERTIES

Physical Properties Polystone M (UHMW-PE)
Property Units ASTM
Test
Natural XL Cross
linked
MPG Glass
filled
Reprocessed
Density gm/cm D792 .930 .932 .96 .935
Tensile strength at yield 73F psi D638 3100 2900 2700 3000
Elongation 73F % D638 350 330 265 290
* Relative volumetric abrasion loss

*

*

100 85 75 90
Coefficient of friction 73F
on steel

-

-

Static        .15-.20
Dynamic   .10-.20
.15-.20
.08-.18
.15-.20
.10-.20
.17-.20
.10-.20
IZOD impact strength 73F KJ/m2 D4020-96 125 120 110 96
Hardness 73F

-

D785 Shore      D 62-66 D 62-66 D 63-67 D 63-69
Melting point F D789 275-280 275-280 275-280 275-280
Coefficient of linear thermal expansion 1/K D696 2.0 x 10-4 1.0 x 10-4 1.0 x 10-4 1.9 x 10-4
Continuous service temperature in air (max) F

-

180 180 180 180
Volume resistivity Ohm/cm D257 >1015 >1015 >1015 >1015
Dielectric constant (10 Hz)

-

D150 2.3 2.3 2.3

-

Dielectric strength KV/mm D149 900 900 900 900



* Industry standard testing method using slurry of 60% aluminum 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.

The information listed herein is stated to the best of our knowledge and is intended to provide a general guideline for Polystone M and its uses. The values given are based on laboratory testing backed with global industry experience. All properties in this table have performed equal or better in laboratory testing. However, the data should not be considered as guaranteed specific properties. Suggested applications are provided for information only and are not specific recommendations.

 


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