Microwave Engineer's Handbook

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Dielectric Constant of Material

Material	Dielectric Constant	Loss Tangent
Alumina, 99.5%	9.9	0.00008
Boron Nitride	4.4	0.0003
	0
Epsilam^®-10	10.0	0.002
	1.
Gold, pure drawn	4.1
Iron, 99.8% pure	1.
Iron, gray cast	0.
Platinum	0.
Polystyrene	2.53	0.0003
Quartz (Fused Sillica)	3.78	0.0001
Nickel	1
Silver, 99.98% pure	6
Tantalum	0
Tin	0
Woven TFG	2.55	0.0015
Titanium	0
Tungsten, cold-worked	1.
Zinc	1

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