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PE Insulation

 

2Y

2Y

2X

O2Y

LDPE

HDPE

VPE

 

Low density 
Polyethylene

High density 
Polyethylene

Cross Linked 
Polyethylene

Foamed 
Polyethylene

Density g/cm3

0.92-0.94

0.94-0.98

0.92

≈0.65

Breakdown Voltage KV/mm (20oC)

70

85

50

30

Specific Volume Resistivity Ω cm (20oC)

1017

1017

1012-1016

1017

Dielectric Constant 50 Hz (20oC)

2.3

2.3

4-6

≈1.55

Dielectric Loss Factor (tan δ)

2 x 10-4

3 x 10-4

2x 10-3

5 x 10-4

Working 
Temperature

Permanent oC

-50 +70

-50 +00

-35 +90

-40 +70

Short Time oC

+100

+120

+100

+100

Melt  Temperature +oC

105-110

130

-

105

Flame Resistance

Flammable

Flammable

Flammable

Flammable

Oxygen Index LOI (% O2)

≤22

≤22

≤22

18-30

Heating Value H0 MJ.kg-1

42-44

42-44

42-44

42-44

Thermal Conductivity W.K-1.m-1

0.3

0.4

0.3

0.25

Corrosive Gases In Case Of Fire

No

No

No

No

Radiation Resistance max Mrad

100

100

100

100

Tensile Strength N/mm2

10-20

20-30

12.5-20

8-12

Elongation At Break %

400-600

500-1000

300-400

350-450

Shore Hardness

43-50 (D)

60-63 (D)

40-45 (D)

-

Abrasion Resistance

Medium

Good

Medium

-

Water Absorption %

0.1

0.1

0.1

-

Halogen Free

Yes

Yes

Yes

Conditional

Weather Resistance

Medium 
(Black: Good)

Medium 
(Black: Good)

Good

-

Cold Resistance

Good

Good

Good

Good

 

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