Lapp Online Catalog: Properties of Insulation Materials

Properties of Insulation Materials

Properties	ASTM Method	PVC	Semi Rigid PVC	Polyethylene	Foamed Polyethlyene	Polypropylene
Gravity	D-792	1.15-1.68	1.37	0.90 - 1.27	0.55 - 0.61	0.895 - 0.910
Tensile Strength, psi	D-638	1500 - 4400	3900	1500 - 2150	540	2800 - 4400
Elongation %	D-412	38 - 95	240	175 - 590	165	650
Volume Resisitivity, Ohm-cm	D-257	10¹³ - 10¹⁶	10¹⁴	>10¹⁴	10¹⁵	1.5 x 10¹⁴2.8 x 10¹⁴
Dielectric Strength, Volts/mil	D-149	240 - 290	390	220 - 1400	290	440 - 830
Dielectric Constant @ 1 kHz	D-150	3.7 - 8.1	2.9	2.28 - 2.55	1.7	2.2
Power Factor (Dissipation) @ 1 kHz	D-150	.008 - 0.17	0.0038	0.00049	0.00035	0.0043
Abrasion Resistance	-	Good	Excellent	Good	Poor	Poor
Heat Resistance	-	Good	Good	Good	Poor	Good
Weatherability	-	Good	Good	Excellent	Poor	Excellent
Flame Retardancy	-	Excellent	Good	Poor	Poor	Poor
Water Resistance	-	Good	Good	Excellent	Poor	Excellent
Acid Resistance	-	Good	Good	Good	Fair	Excellent
Alkali Resistance	-	Excellent	Excellent	Good	Fair	Excellent
Aliphatic Hydrocarbon Resistance	-	Good	Good	Poor	Fair	Fair
Aromatic Hydrocarbon Resistance	-	Poor	Poor	Poor	Fair	Fair

Properties	Foamed Polypropylene	Polyurethane	HYTREL^®	NYLON	TPE	Thermoset Neoprene
Gravity	0.55 - 0.60	1.00 - 1.20	1.24	1.08	0.90 - 1.29	1.21 - 1.60
Tensile Strength, psi	250	>4800	6000	6000	1250 - 2200	1175 - 2600
Elongation %	100	530 -750	490	500	490 - 730	290 - 680
Volume Resisitivity, Ohm-cm	10¹⁴	2 x 10¹²11 x 10¹²	10¹⁰	10¹²	2 x 10¹⁶	10¹⁰ - 10¹²
Dielectric Strength, Volts/mil	290	320 - 620	450	460	700	590
Dielectric Constant @ 1 kHz	1.7	5.7 - 7.7	3.8	4.6	2.8	4.9 - 7.1
Power Factor (Dissipation) @ 1 kHz	0.0034	0.043 -0.060	0.018	0.045	0.0018	3.6
Abrasion Resistance	Poor	Excellent	Excellent	Excellent	Good	Excellent
Heat Resistance	Poor	Good	Good	Good	Good	Good
Weatherability	Poor	Good	Excellent	Good	Good	Good
Flame Retardancy	Poor	Fair	Poor	Poor	Good	Good
Water Resistance	Poor	Good	Good	Fair	Good	Excellent
Acid Resistance	Fair	Fair	Good	Good	Good	Good
Alkali Resistance	Fair	Fair	Good	Good	Good	Good
Aliphatic Hydrocarbon Resistance	Poor	Fair	Good	Good	Good	Good
Aromatic Hydrocarbon Resistance	Poor	Poor	Good	Good	Good	Fair

Properties	SBR	KYNAR^®	PFA	TEFLON^® FEP	TFE
Gravity	0.92	1.74 - 1.77	2.13 - 2.16	2.13 - 2.16	2.13 - 2.20
Tensile Strength, psi	>2800	5000 - 7400	4000 - 4200	2600 - 3000	1100 - 3300
Elongation %	>430	500	300	260 - .320	265
Volume Resisitivity, Ohm-cm	2 x 10¹⁵	2 x 10¹²	>10¹⁴	2 x 10¹⁶	>10¹⁶
Dielectric Strength, Volts/mil	400 - 500	250	480	480- 550	500
Dielectric Constant @ 1 kHz	3	7.6	2.2	2.2	2.2
Power Factor (Dissipation) @ 1 kHz	0.0035	0.019	0.00003	0.0006	0.0002
Abrasion Resistance	Good	Good	Fair	Good	Fair
Heat Resistance	Fair	Excellent	Excellent	Excellent	Excellent
Weatherability	Fair	Good	Good	Good	Excellent
Flame Retardancy	Poor	Excellent	Excellent	Excellent	Excellent
Water Resistance	Good	Good	Excellent	Good	Excellent
Acid Resistance	Fair	Excellent	Excellent	Excellent	Excellent
Alkali Resistance	Fair	Excellent	Excellent	Excellent	Excellent
Aliphatic Hydrocarbon Resistance	Poor	Excellent	Excellent	Excellent	Excellent
Aromatic Hydrocarbon Resistance	Poor	Excellent	Excellent	Excellent	Excellent

TEFLON^®is a registered trademark of DuPont

Lapp Group


© 2008 Lapp Group	Privacy	Lapp USA or the Lapp Group are not affiliated with Lapp Insulator.		Disclaimer