DuPont™ Kevlar® 29 Aramid Fiber

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DuPont™ Kevlar® 29 Aramid Fiber
Categories:	Other Engineering Material; Composite Fibers; Polymer; Thermoset; Aramid
Material Notes:	1500 Denier; 1000 Filaments. Kevlar® 29 yarns are used in ballistic applications, ropes and cables, protective apparel such as cut-resistant gloves, in life protection uses such as helmets, vehicular armoring and plates, and as rubber reinforcement in tires and automotive hoses. 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 Properties	Original Value	Comments

Density	1.44 g/cc
Moisture Absorption at Equilibrium	4.5 %	Bone drying the fiber then condition at 75°F (24°C), 55% RH.
	7.0 %	yarn as shipped

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	424000 psi	Breaking Tenacity
	525000 psi	Epoxy-impregnated strands, ASTM D2343
Elongation at Break	3.6 %
Tensile Modulus	1.02e+7 psi
Tenacity	23.0 g/denier

Thermal Properties	Original Value	Comments
Specific Heat Capacity	1.42 J/g-°C @Temperature 25.0 °C
Thermal Conductivity	0.0400 W/m-K
Maximum Service Temperature, Air	149 - 177 °C	For long-term use
Shrinkage	<= 0.10 %	In water at 212°F (100°C) and in air at 351°F (177°C)

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PDUKEV49 / 33417

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