Technical
Product Data Sheets
|
UHMWPE
(ultrahigh
molecular weight polyethylene)
UHMWPE
is a linear, low-pressure,
Ziegler-type-catalyst,
polyethylene resin. Its
weight-average molecular weight
of 4 X 106
is approximately ten times that
of high molecular weight,
high-density polyethylene (HDPE)
resins. UHMWPE has both he
highest abrasion resistance and
highest impact strength of any
plastic. In fact, a 25mm
(1") thick slap can stop a
0.38 caliber pistol slug at 150
mm (6"). Combined
with abrasion resistance and
toughness, the low coefficient
of friction of UHMWPE yields a
self-lubricating, non-stick
surface. Static and
dynamic coefficients are
significantly lower than steel
and most plastic materials.
Typical
Values
| Physical
Properties |
ASTM
Test Method |
Units |
UHMWPE |
| Density |
D792 |
gm/cm3 |
0.926
- 0.934 |
| Water
absorption, |
D570 |
% |
Nil |
| Mechanical
Properties |
ASTM
Test Method |
Units |
UHMWPE |
| Tensile
Strength at yield |
D638 |
MPa
(ksi) |
21
(3.1) |
| Tensile
Strength at break |
D638 |
MPa
(ksi) |
48
(7.9) |
| Elongation
at break |
D638 |
% |
350 |
| Young's
Modulus
At
23°C (73°F)
At
-40°C (-450°F)
|
D638
D638 |
GPa
(106 psi)
GPa
(106 psi) |
0.69
(0.10)
0.69
(0.10) |
| Izod
Impact Strength
At
23°C (73°F)
At
-40°C (-450°F)
|
D256
(a)
D256
(a) |
kJ/m
(ft. lb/in.) Notch
kJ/m
(ft. lb/in.) Notch |
0.691.6
(30)
1.1
(21) |
| Hardness,
Shore D |
D2240 |
---- |
62
- 66 |
| Abrasion
Resistance |
---- |
---- |
100 |
| Relative
solution viscosity |
D4020 |
dL/g |
2.3
- 3.5 |
| Thermal
Properties |
ASTM
Test Method |
Units |
UHMWPE |
| Crystalline
melting range, powder |
Polarizing
Microscope |
°C
(°F) |
138
- 142
(280
- 289) |
| Coefficient
of Linear Expansion |
see
lines below |
At
20 to 100°C
(68 to 212°F) |
D696 |
10-4
/ K |
2 |
At
-200 to -100°C
(-330 to -150°F) |
D696 |
10-4
/ K |
0.5 |
| Electrical
Properties |
ASTM
Test Method |
Units |
UHMWPE |
| Volume
Resistivity |
D257 |
ohm-cm |
5
X 1014 |
| Dielectric
Strength |
D149 |
---- |
2.7 |
| Dielectric
Constant |
D150 |
---- |
0.001 |
| Dissipation
Factor |
see
lines below |
| At
50 Hz |
D150 |
X
104 |
1.9 |
| At
1 kHz |
D150 |
X
104 |
0.5 |
| At
0.1 MHz |
D150 |
X
104 |
2.5 |
| Surface
resistivity, wt % carbon
black |
see
lines below |
| 0.2%
for color |
D257 |
ohm |
1014 |
| 2.5%
for UV protection |
D257 |
ohm |
1013 |
| 6.5%
for antistatic
applications |
D257 |
ohm |
105 |
| 16.7%
for conductive
applications |
D257 |
ohm |
103 |
Material
Availability:
Rods:
Diameters 1/4" to
18" thickness
Plates:
0.10 inch to 6 inch
thickness inclusive, 48 X 120
inches
Profiles,
tubes and special sizes are
available on request
This
information is only to assist
and advise you on current
technical knowledge and is given
without obligation or liability.
All trade and patent rights
should be observed. All
rights reserved. |
|
|
