Hydlar is a thermoplastic composite reinforced with Kevlar® aramid
fiber. There are two grades available:
Hydlar Z (nylon/Kevlar composite) and Hydlar G (PPS/Kevlar composite.
Hydlar's top features offer:
• Superior wear resistance
• Virtually no abrasion to counter surfaces
• High use temperature
• Greatly improved mechanical properties
• Outstanding machinability
• High P.V. limit
Hydlar possesses a combination of physical properties that cannot
be found in any other commercially available product. Using
Hydlar composites, design engineers have created a new family of
superior wear and abrasion resistant thermoplastics to choose from.
Ordinary thermoplastic composites attain low wear rates by using
reinforcement that adds to their strength and/or stiffness. But
most, however, also show correspondingly high abrasiveness to counter
surface. Hydlar thermoplastic composites are the exception. Hydlar's
tough, strong reinforcing material makes the end product extremely
wear resistant without excessive galling to mating wear surface.
In addition Hydlar improves mechanical properties and increases
surface temperature capabilities.
Properties
Hydlar
Z
Test
Units
Injection
Molded & Extruded
Molded
Only
Extruded
& Molded
Nylon*
6/6
Nylon***6
Nylon*6/6
Hydlar
Z6/6
Fiber
-
None
Glass
Glass
Glass
Nylon/Kevlar
Content
%
-0-
10%
13%
33%
N/A
Tensile Strength
PSI x 103
12.0
14.0
15.0
27.0
16.0
Tensile Modulus
PSI x 106
--
.9
--
--
1.3
Elongation
%
60.0
3.2
2.0
3.0
4.0
Flexural Strength
PSI x 103
--
18.0
--
--
23.0
Flexural Modulus
PSI x 106
.41
.6
.7
1.3
.9
Notched Izod Impact
Ft.-lb./in.
1.0
1.1
.9
2.0
2.7
Compressive Strength
PSI x 103
13.0
14.5
--
24.0
19.3
Test Distortion Temp @
264 PSI
F
194A
370
470
480
280 to 320¹
Coefficient of Linear
Thermal Expansion
in/in/F
4.0x10-5
--
1.5x10-5
1.3x10-5
1.6x10-5
Specific Gravity
gr/cm3
1.14
1.21
1.22
1.38
1.16
Water Absorption 24 hrs
Immersion 73°F
%
1.2
--
--
.7
.8
Saturation 73°F
%
8.5
--
7.1
5.4
6.3
Wear Factor
-
867 to1105
149-Melting
of Nylon 6
N/A
424
128 to 79
Galling of Mating Test
Surface
-
Minor
Heavy
--
Severe
None
¹Depending on PV* DuPont Zytel Property Charts except wear **
RTP Test Data except wear *** ASTM Thrust Washer Text: PV =
2,500 P=250 PSI V=10 f.p.m.