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Hydlar®

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 Z

6/6
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.

Hydlar G ASTM Units Values
Tensile Strength D638 psi 12.0x103
Tensile Modulus D638 psi 1.4x106
Flexural Strength D790 psi 18.0x103
Flexural Modulus D790 psi 1.1x106
Notched Izod Impact D256 ft-lb/in 2.6
Heat Distortion @ 264 psi D648 °F 485
Specific Gravity D792 g/cm3 1.25
Coefficient of Linear Thermal Expansion D696 in/in°F 1.5x105
Water Absorption D570 % <<.08
Wear Factor Thrust washer -- 210
Coefficient of Friction Thrust washer -- .35

 

 


       
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