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DuPont™ Kevlar® 49 Aramid Fiber
Categories: Other Engineering Material; Composite Fibers; Polymer; Thermoset; Aramid
Material Notes: 1140 Denier; 768 Filaments. Kevlar® 49 is a high-modulus type used primarily in fiber optic cable, textile processing, plastic reinforcement, ropes, cables, and composites for marine sporting goods and aerospace applications.

General KEVLAR Information: DuPont Kevlar® poly-para-phenylene terephthalamide (aramid) has a unique combination of high strength, high modulus, toughness, and thermal stability. It was developed for demanding industrial and advanced-technology applications. It is chemically stable under a wide variety of exposure conditions; however, certain strong aqueous acids, bases, and sodium hypochlorite can cause degradation, particularly over long periods of time and at elevated temperatures.

Information provided by DuPont.
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Physical PropertiesMetricEnglishComments
Density 1.44 g/cc0.0520 lb/in³
Water Absorption 3.50 %3.50 %As shipped; Typical moisture levels on yarn as shipped; they reflect values reached at normal, moderate temperature and humidity levels following fiber production, which is a wet process.
Moisture Absorption at Equilibrium 3.50 %3.50 %Equilibrium from Bone-Dry Yarn; Equilibrium values are determined by bone drying the fiber and condition at 75°F (24°C), 55% RH.
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 3000 MPa435000 psiBreaking Tenacity
 3620 MPa525000 psiEpoxy-impregnated strands, ASTM D2343
Tenacity 2.08 N/tex23.6 g/denier
Elongation at Break 2.40 %2.40 %
Tensile Modulus 112 GPa16300 ksi
Poissons Ratio 0.3600.360
 
Thermal PropertiesMetricEnglishComments
Specific Heat Capacity 0.340 J/g-°C
@Temperature 25.0 °C		0.0813 BTU/lb-°F
@Temperature 77.0 °F
Thermal Conductivity 0.0400 W/m-K0.278 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 149 - 177 °C300 - 351 °FFor long-term use
Shrinkage <= 0.100 %<= 0.100 %In water at 212°F (100°C) and in air at 351°F (177°C)

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistant format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's disclaimer and terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PDUKEV29 / 33416




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