| Vertec
5025 is a proprietary,
bearing grade PEEK (polyetheretherketone) material,
reinforced with carbon fibers and internally lubricated
with different proprietary lubricants to improve dry
running capabilities. Tribological evaluations under
dry running conditions have shown its friction coefficient
and wear rate to be much lower than other bearing
grade composite materials available in the market.
Its extremely low wear rate along with low coefficient
of thermal expansion properties make this material
an ideal candidate for replacing metal wear components.
This material is especially
suited to centrifugal pump components such as impeller/case
wear rings, throat bushings, and line shaft bearings.
In addition to improved reliability and increased
MTBR (mean time between repair), these features allow
for 50% tighter clearance gaps than API recommended
values, thereby increasing pump efficiency resulting
in substantial savings.
Physical
Properties |
ASTM Method |
Typical Values |
|
|
| Specific
Gravity |
D792 |
1.42 gr/cm
3 |
|
|
| Water
Absorbtion (24 hrs. @73.4° F) |
D570 |
.15% |
|
|
| Color |
N/A |
Black |
|
|
|
|
Mechanical
Properties |
|
|
|
|
| Tensile
Strength |
D1708/D638 |
18,900 psi |
|
|
| Tensile
Elongation |
D1708/D638 |
3.5% |
|
|
| Flexural
Strength |
D790 |
25,000 psi |
|
|
| Flexural
Modulus |
D790 |
1.3 10 6
psi |
|
|
| Compressive
Strength |
D695 |
25,000 psi |
|
|
| Compressive
Modulus |
D695 |
540,000 psi |
|
|
| Impact
Strength (Izod, notched) |
D256 |
|
|
|
| Hardness |
Shore D |
88 |
|
|
|
|
|
|
Tribological
Properties |
|
|
|
|
| Coefficient
of Friction |
|
|
|
|
| Static |
D3702 |
.12 |
|
|
| Dynamic |
D3702 |
.14 |
|
|
| Wear
Rate (PV: 20,000 psi-fpm) |
D3702 |
.80 µin/min |
|
|
|
|
|
|
Thermal
Properties |
|
|
|
|
| Coefficient
of Linear Thermal Expansion (78-400° F) |
D696 |
25 10 -6/°
F |
|
|
| Heat
Deflection Temperature (@264 psi) |
D648 |
450°
F |
|
|
| Glass
Transition Temperature (Tg) |
D3418 |
|
|
|
| Continuous
Service Temperature (Max @ no load) |
|
480°
F |
|
|
| Melting
Point |
|
644°
F |
|
|
|
|
|
|
Electrical
Properties |
|
|
|
|
| Volume
Resistivity |
D257 |
10 16 ohm-cm |
|
|
| Dielectric
Strength |
D149 |
KV/mm |
|
|
| Delectric
Constant |
D150 |
50Hz, 200°
C |
|
|
|
|
|
|
| Note:
Property values should
be interpreted as typical rather than minimum
value. All technical information and recommendations
are presented in good faith, and based upon
labratory and real-world tests believe to be
reliable and practical. However, Vertec Polymers,
Inc. cannot guarantee the accuracy or completenss
of this information, and it is the customers
responsibility to determine product suitability
to any given application.
Revision
Date 05/2004 |
|
Call 866.283.7832
