Density g/cm³

1.05

1.02-1.1

0.91

1.15-1.2

1.2-1.4

0.89-1.0

Breakdown Voltage KV/mm (20^oC)

30

30

75

20

40

30

Specific Volume Resistivity Ω cm (20^oC)

10¹⁶

10¹⁵

10¹⁶

10¹⁰-10¹²

>10¹⁰

>10¹⁴

Dielectric Constant 50 Hz (20^oC)

2.5

4

2.3-2.4

4-7

3.7-5.1

2.7-3.6

Dielectric Loss Factor (tan δ)

1 x 10^-4

2 x 10^-2 to 1 x 10^-3

4 x 10^-4

2.3 x 10^-2

1.8 x 10^-2

1.8 x 10^-2

Working 
Temperature

Permanent ^oC

-50 +80

-60 +05

-10 +100

-55 +80

-50 +100

-50 +100

Short Time ^oC

+100

+125

+140

+100

+140

+130

Melt  Temperature +^oC

>120

210

160

150

190

150

Flame Resistance

Flammable

Flammable

Flammable

Flammable

Flammable

Flammable

Oxygen Index LOI (% O2)

≤22

≤22

≤22

≤22

≤29

≤25

Heating Value H₀ MJ.kg^-1

40-43

27-31

42-44

20-26

20-25

23-28

Thermal Conductivity W.K^-1.m^-1

0.25

0.23

0.19

0.25

0.5

1.5

Corrosive Gases In Case Of Fire

No

No

No

No

No

No

Radiation Resistance max Mrad

80

10

10

100

10

10

Tensile Strength N/mm²

55-65

50-60

20-35

30-45

30

20

Elongation At Break %

300-400

50-170

300

500-700

>300

>300

Shore Hardness

35-50 (D)

-

55-60 (D)

70-100 (A)

85 (A), 70 (D)

55 (A), 70 (D)

Abrasion Resistance

Good

Very Good

Medium

Very Good

Good

Good

Water Absorption %

0.4

1.0-1.5

0.1

1.5

1.5

1.5

Halogen Free

Yes

Yes

Yes

Yes

Yes

Yes

Weather Resistance

Medium - Good

Good

Moderate

Very Good

Very Good

Very Good

Cold Resistance

Moderate - Good

Good

Good

Very Good

Very Good

Very Good