Density g/cm³

1.7-1.9

1.6-1.8

2.0-2.3

2.0-2.3

2.0-2.3

Breakdown Voltage KV/mm (20^oC)

25

36

25

25

20

Specific Volume Resistivity Ω cm (20^oC)

10¹⁴

10¹⁶

10¹⁸

10¹⁸

10¹⁸

Dielectric Constant 50 Hz (20^oC)

9-7

2.6

2.1

2.1

2.1

Dielectric Loss Factor (tan δ)

1.4 x 10^-2

8 x 10^-4

3 x 10^-4

3 x 10^-4

3 x 10^-4

Working 
Temperature

Permanent ^oC

-40 +135

-100 +150

-100 +205

-190 +260

-190 +260

Short Time ^oC

+160

+180

+230

+280

+300

Melt  Temperature +^oC

>170

>265

>225

>290

>325

Flame Resistance

Self 
Extinguishing

Self 
Extinguishing

Self 
Extinguishing

Self 
Extinguishing

Self 
Extinguishing

Oxygen Index LOI (% O2)

40-45

30-35

>95

>95

>95

Heating Value H₀ MJ.kg^-1

15

14

5

5

5

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

0.17

0.24

0.26

0.21

0.26

Corrosive Gases In Case Of Fire

Hydrofluoric

Yes

Yes

Yes

Yes

Radiation Resistance max Mrad

10

10

1

0.1

0.1

Tensile Strength N/mm²

50-80

40-50

15-25

25-30

80

Elongation At Break %

150

150

250

250

50

Shore Hardness

75-80 (D)

70-75 (D)

55-60 (D)

55-60 (D)

55-60 (D)

Abrasion Resistance

Very Good

Very Good

Very Good

Very Good

Very Good

Water Absorption %

0.01

0.02

0.01

0.01

0.01

Halogen Free

No

No

No

No

No

Weather Resistance

Very Good

Very Good

Very Good

Very Good

Very Good

Cold Resistance

Very Good

Very Good

Very Good

Very Good

Very Good