High Temperature Materials

Last updated on 2018-11-30 7 mins. to read
 

10Y

7Y

6Y

5YX

5Y

PVDF

ETFE

FEP

PFA

PTFE

Polyvinylidene
Fluoride 
Kynar/Dyflor

Ethylene- 
Tetrafluorethylene

 

Fluorine Ethylene 
Propylene

Perfluoral- 
Koxypolymeric

Poly- 
Tetrafluorethylene

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 (20oC)

25

36

25

25

20

Specific Volume Resistivity Ω cm (20oC)

1014

1016

1018

1018

1018

Dielectric Constant 50 Hz (20oC)

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

 

Comments

Add comment
Harsha Durugoji Jul 14, 2022 7:12 AM
What does those 6 7Y means on the top row?
Reply
Steven McFadyen Jul 14, 2022 11:00 AM
It is the VDE code.
Reply