Delrin	Vulcanized Fibre	Glass Epoxy G10	Glass Melamine G9
Dielectric Strength/v/mill (short time)		400-465	150-250	400	350
Dielectric Constant @ 1000 kc		3.7	4-7	5.4	7.5
Power Factor @ 1000 kc		—	0.03-0.08	0.015	0.08
Tensile Strength (psi)		10,000	6,000-12,000	35,000	37,000
Shear Strength (psi)		—	11,000-15,000	19,000	—
Compressive Strength (psi)		18,000	20,000-30,000	55,000(flat)	65,000(flat)
Elongation (%)		30	—	—	—
Flexural Strength (psi)		14,000	12,000-20,000	80,000(flat)	65,000(flat)
Modules of Elasticity (psi)		350,000	750,000	2,200,000	2,300,000
Hardness		R118	R60-100	M 100	M 120
Specific Gravity		1.42	1.0-1.5	1.8	1.9
Thermal Conductivity       (BTU/hr/ft²/°F/ft)		—	0.25	0.17	0.29
Specific Heat (BTU/lb/°F)		—	0.37	—	0.26
Resistance to Continuous Heat °F		212	212	280	300
Water Absorbtion %		0.12	15-25	0.15	0.2

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		Glass SIlicone G7	Kapton	PCTFE	Mica
Dielectric Strength/v/mill (short time)		350-400	7,000	530	3,000-6,000
Dielectric Constant @ 1000 kc		4.2	3.5	2.4	6.5-8.7
Power Factor @ 1000 kc		—	—	—	0.0005
Tensile Strength (psi)		18,000-23,000	25,000	4,600-5,700	—
Shear Strength (psi)		17,000	—	5,800	—
Compressive Strength (psi)		245,000	—	32,000-80,000	—
Elongation (%)		—	70	150	—
Flexural Strength (psi)		20,000-23,000	—	8,200	—
Modules of Elasticity (psi)		1,200,000	—	180,000	25,000,000
Hardness		M 100	—	R113	80-150 SDH
Specific Gravity		1.7	1.42	2.1	2.6-3.2
Thermal Conductivity       (BTU/hr/ft²/°F/ft)		0.17	0.09	0.15	—
Specific Heat (BTU/lb/°F)		—	0.26	0.22	0.207
Resistance to Continuous Heat °F		460	750	390	1,050
Water Absorbtion %		0.2-0.3	2.9	0.005	4.5

		Mylar	Neoprene	Nylon
				Pure (1)	Moly-Sulfide (M)
Dielectric Strength/v/mill (short time)		4,000	—	385	356
Dielectric Constant @ 1000 kc		3	—	3.4	—
Power Factor @ 1000 kc		0.016	—	0.04	—
Tensile Strength (psi)		20,000	1,500	10,500	12,300
Shear Strength (psi)		—	—	9,600	—
Compressive Strength (psi)		—	—	13,000	—
Elongation (%)		75	300	90	5-150
Flexural Strength (psi)		—	—	13,800	18,000
Modules of Elasticity (psi)		—	—	400,000	575,000
Hardness		—	50-70 SHA	R115	R115
Specific Gravity		1.38	1.23	1.14	1.16
Thermal Conductivity       (BTU/hr/ft²/°F/ft)		0.09	—	0.14	—
Specific Heat (BTU/lb/°F)		—	—	0.4	—
Resistance to Continuous Heat °F		300	175	300	400
Water Absorbtion %		<0.5	—	1.5	1.5

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		Phenolic
		LE	CE	XXXP
Dielectric Strength/v/mill (short time)		225	225	325
Dielectric Constant @ 1000 kc		—	—	4.30 Avg.
Power Factor @ 1000 kc		5.2	5.5	3.2
Tensile Strength (psi)		10,000-14,000	9,000-12,000	13,500
Shear Strength (psi)		11,000-15,000	11,000-15,000	7,000
Compressive Strength (psi)		37,000(flat)	37,000(flat)	36,000(flat)
Elongation (%)		—	—	—
Flexural Strength (psi)		20,000(flat)	16,000(flat)	19,000(flat)
Modules of Elasticity (psi)		1,000,000	1,000,000	1,000,000
Hardness		M 113	M 108	M 110
Specific Gravity		1.33	1.36	1.35
Thermal Conductivity       (BTU/hr/ft²/°F/ft)		0.17	0.17	0.17
Specific Heat (BTU/lb/°F)		0.4	0.4	—
Resistance to Continuous Heat °F		250	250	250
Water Absorbtion %		1.3	1.6	0.8

		Polyethylene (High-Density)	PVC	Santoprene	PTFE
Dielectric Strength/v/mill (short time)		460	425	—	480
Dielectric Constant @ 1000 kc		2.3	3.4	—	2
Power Factor @ 1000 kc		<.0005	—	—	<.0005
Tensile Strength (psi)		3,100-5,500	5,900-7,500	640	800
Shear Strength (psi)		—	—	—	—
Compressive Strength (psi)		2,500	10,000	—	1,700
Elongation (%)		15-100	2.0-4.0	330	110
Flexural Strength (psi)		4,000	13,000	—	—
Modules of Elasticity (psi)		150,000	600,000	—	58,000
Hardness		60-70 SDH	65-85 SDH	55 SDH	50-70 SDH
Specific Gravity		.941-.965	1.46	0.99	2.1-2.3
Thermal Conductivity       (BTU/hr/ft²/°F/ft)		—	—	—	0.15
Specific Heat (BTU/lb/°F)		—	—	—	0.25
Resistance to Continuous Heat °F		250	160	212	500
Water Absorbtion %		<0.015	0.07-0.4	—	0.005

This data has been obtained from numerous sources. While it is believed to be correct,
we cannot assume responsibility for its use.

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