Properties of the PTFE-based compounds F4К20, F4К15М5, F4С15, F4С15М5, F4К15UV5, F4КС2

Material

Documentation

Fillers for PTFE

PTFE

TU 6-05-810-88

-

F4К20

TU 6-05-1413-76

20% coke

F4К15М5

TU 6-05-1413-76

15% coke & 5% molybdenum disulfide

F4С15

TU 6-05-1413-76

15% glass fiber

F4С15М5

TU 6-05-1413-76

15% glass fiber & 5% molybdenum disulfide

F4К15UV5

TU 6-05-041-781-84

15% coke & 5% carbon fiber

F4КС2

TU 6-05-041-913

2% cobalt blue

Properties

F4

F4К20

F4К15М5

F4С15

F4С15М5

F4К15UV5

F4КС2

Physical and mechanical

Specific gravity, g/cm3³

2,12-2,2

2,05

2,17

2,18

2,19

2,08

2,17

Yield point, MPa

11,8

14

13,4

-

-

16,4

13

Tensile strength, MPa

14-34

12-15

13-16

18-20

18-20

17-20

22-24

Elongation, %

250-500

60-120

80-150

180-220

150-200

80-150

230-320

Modulus of elasticity, MPa

550

1200

110

900

-

1760

650

Brinell hardness, MPa

29-39

49-53

49

39-49

39-49

48-49

37-39

Viscoelastic

Tensile strain

-

6,0

6,7

9,0

9,3

3,3

8,1

Compression strain

-

7,2

7,7

8,6

8,8

3,8

9,3

Thermophysical

Thermal capacity, J/(kg С)

1,04

0,985

0,980

0,,950

0,950

0,98

0,9

Thermal conductivity, W/(m С)

0,25

0,34

0,32

0,28

0,27

0,385

0,33

Linear expansion coefficient, а*10⁵

8-25

10-12

10-12

13-15

13-15

7-9

12-14

Tribotechnical

Coefficient of friction

0,04

0,27

0,23

0,25

0,2

0,26

0,16

Wear rate, J*cubic ^10, g/hour

-

1

0,8

1,8

1,6

0,65

4

Operating temperature range, ^оС

от -250 до +260