Insulation/Jacket Materials: Physical Properties Chart

Material	Abv.	VDE Symbol	Cenelec Symbol	Dielectric Constant (K) @ 1Mhz	Breakdown Voltage KV/mm	Radiation Resist- cJ/kg (= rad)
Polyvinylchloride	PVC	Y	V	4.0	10	8•107
Polyvinylchloride heat resistant	PVC	Y	V2	3.5	20	1•108
Polyethylene LD	LDPE	2Y	E	2.3	75	1•107
Polyethylene HD	HDPE	2Y	E2	2.3	100	7•106
Polystyrene	PS	3Y	Q3	2.5	30	5•106
Polyamide	PA	4Y	Q4	4.0	25	1•107
Polytetrafluoroethylene	PTFE	5Y	E4	2.1	25	1•105
Fluorine-Ethylene-Propylene	FEP	6Y		2.1	20	3•105
Ethylene tetrafluoroethylene	ETFE	7Y	E6	2.6	30	1•107
Polypropylene	PP	9Y	E7	2.3	35	1•105
Polyurethane	PUR	11Y	Q	6	20	5•107
Polyethylene-Terephthalate	PET	12Y	Q2	3.3	30	1•107
Natural Rubber	NR	G	R	4	20	8•107
Styrene-Rubber	SBR	G	R	4	20	2•107
Silicone-Rubber	SIR	2G	S	3.2	20	2•107
Ethylene-Propylene-Rubber	EPR/EPDM	3G	B	3.5	20	1•108
Ethylene-Vinyl-Acetate	EVA	4G	G	5	30	1•107
Polychloroprene	CR	5G	N	8	20	2•107
Cross-linked Polyethylene	XLPE	2X	X	2.4	50	1•107

Material	Abv.	Dens. g/cm3	Flex	Tensile Strength N/mm2	Breaking Elong. %	Water Absorp. %	Water Vapor Perm.	Weather Resist.	Flam
Polyvinylchloride	PVC	1.35	+	15	250	0.4	o	+	s.v.
Polyvinylchloride heat resistant	PVC	1.35	+	18	200	0.4	o	+	s.v.
Polyethylene LD	LDPE	0.9	o	10	400	0.03	–	+	e.
Polyethylene HD	HDPE	0.9	–	20	500	0.03	–	+	e.
Polystyrene	PS	1.06	o	55	30	1	–	+	e.
Polyamide	PA	1.1	o	50	200	2	o	+	s.v.
Polytetraflouroethylene	PTFE	2.17	–	40	350	0.01	—	++	n.e.
Fluorine-Ethylene-Propylene	FEP	2.15		20	250	0.01	—	++	n.e.
Ethylene tetrafluoroethylene	ETFE	1.70	o	45	200	0.01	—	++	n.e.
Polypropylene	PP	0.91	o	30	500	0.1	–	+	e.
Polyurethane	PUR	1.20	+	30	400	5	–	++	s.v.
Polyethylene-Terephthalate	PET	1.40	–	100	50	0.3	–	+	n.e.
Natural Rubber	NR	1.6	++	10	350	0.1	–	+	e.
Styrene-Rubber	SBR	1.6	++	5	250	0.1	–	+	e.
Silicone-Rubber	SIR	1.25	++	5	200	1	—	+	s.e.
Ethylene-Propylene-Rubber	EPR/EPDM	1.45	++	5	200	0.2	–	+	e.
Ethylene-Vinyl-Acetate	EVA	1.40	++	6	300	0.1	o	+	e.
Polychloroprene	CR	1.55	+	15	300	1	o	++	s.v.
Cross-linked Polyethylene	XLPE	0.92	o	22	300	0.03	–	+	e.

Key to symbols:
++	very good
+	good
o	average
–	low
—	very low
n.e.	non-flammable
s.e.	flame-retardant
s.v.	self-extinguishing
e.	flammable

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