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PTFE POLYFLON TFE

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Properties of PTFE MOLDING POWDERS

Item Unit Filler contant(wt%) Glass fiber
(15%)		 Glass fiber
(25%)		 Graphite
(15%)		 Graphite
(20%)		 Graphite
(30%)		 Bronze
(40%)		 Bronze
(60%)
Mechanical propertles
Tensile strength		 MPa ASTM D638   ⊥ 19.6 15 16.6 15 12 17.2 13.8
Elongation % ASTM D638   ⊥ 250 200 150 140 130 175 140
Compressive strength MPa 0.2%off set
1% strain
25% strain		 24℃
24℃
24℃		 //
//
//		 7.7
7.0
28.0		 8.6
8.3
28.9		 10.2
7.5
31.9		 10.3
7.7
33.9		 10.5
8.6
39.7		 10.5
9.0
40.0		 11.6
10.2
43.1
Compressive modulus MPa 24℃   // 785 940 790 800 830 1060 1100
Compressive creep %
ASTM

D-621

 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 8.8

4.4		 8.4

3.8		 5.6

3.1		 5.1

2.8		 3.3

1.8		 3.9

1.9		 3.1

2.1
Total deformation % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 15.0

10.5		 14.0

8.5		 7.0

5.4		 6.7

5.5		 5.9

5.6		 7.0

4.8		 6.6

6.1
Compression set % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//		 9.0

3.8		 8.8

3.5		 3.8

3.0		 3.5

2.7		 2.5

1.6		 3.8

1.7		 2.3

1.8
Hardness DurometerD Shore, 25℃   // 53~63 55~65 53~63 53~64 55~65 60~70 62~72
Coefficient of friction
(Static)
(Dynamic)		        

0.065
0.24

0.085
0.26

0.053
0.23

0.053
0.23

0.065
0.25

-
0.25

0.062
0.24
Wear factor mm/km
MPa		       1.2X10⁻⁴ 1.0X10⁻⁴ 6.7X10⁻⁴ 4.4X10⁻⁴ 2.0X10⁻⁴ 1.5X10⁻⁴ 0.7X10⁻⁴
Physical properties
Specific gravity		   ASTM
792		     2.15~2.25 2.18~2.26 2.14~2.19 2.12~2.18 2.13 2.9~3.2 3.8~4.0
Coefficient of linear
hermal expansion		 10⁻5X1/℃ 25~100℃

25~150℃

25~200℃

25~200℃

   //
⊥
//
⊥
//
⊥
//
⊥		 11.8
7.8
12.9
8.7
14.1
9.9
15.4
11.1		 9.3
6.7
10.7
7.2
12.0
7.7
14.0
9.3		 10.7
8.7
11.6
9.2
12.8
10.0
14.7
11.5		 10.0
8.0
11.0
8.6
12.1
9.4
13.9
10.8		 7.8
5.6
8.9
6.7
10.1
7.4
11.5
8.8		   9.8
7.6
10.3
8.5
10.7
9.1
12.5
10.7
Coefficient of thermal
conductivlty		 kcal/
m·h·℃		       0.29 0.34 0.34   0.95   0.42
Electrical properties
Dielectric strength		 kv/mm JISD 2120(oil),25℃    
17.4
13.7
4.1		  
1.5
-
-
Dielectric constant   JISD
6911,23℃		 10³Hz
106Hz		   2.64
2.80		 2.94
2.89		 -
-		 -
-		 -
-		 -
-		 -
-
Dielectric loss
trangent		   JISD
6911,23℃		 10³Hz
106Hz		   0.145
0.0015		 0.533
0.0014		 -
-		 -
-		 -
-		 -
-		 -
-
Volume resistivity Ω-cm ASTM D257     3X1015 7X1015 9X1015 - 2X1015 - -

 

Item Unit Filler contant(wt%) Bronze(40%)
MoS2(5%)		 Carbon/
Graphite
(25%)		 Carbon/
Graphite
(35%)		 Carbon fiber
(10%)		 Carbon fiber
(15%)		 Carbon fiber
(25%)
Mechanical propertles
Tensile strength		 MPa ASTM D638   ⊥ 14 11.0 6.9 2.0 20.2 16.7
Elongation % ASTM D638   ⊥ 180 80 50 200 120 30
Compressive strength MPa 0.2%off set
1% strain
25% strain		 24℃
24℃
24℃		 //
//
//		 10.5
9.0
40.0		 10.0
8.7
38.5		 10.6
9.4
39.5		 9.3
8.3
31.0		 10.8
8.5
39.7		 11.3
10.0
39.8
Compressive modulus MPa 24℃   // 1060 960 1090 850 915 1000
Compressive creep % ASTM

D-621

 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 3.9

1.9		 4.0

2.3		 3.7

1.8		 4.4

2.5		 4.0

2.0		 3.9

1.9
Total deformation % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 7.0

4.8		 8.7

5.4		 6.9

3.0		 9.0

7.0		 8.9

6.0		 6.4

5.5
Compression set % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//		 3.8

1.7		 3.8

2.1		 3.5

1.6		 4.3

2.9		 3.6

1.5		 3.1

2.0
Hardness DurometerD Shore, 25℃   // 60~70 58~68 60~70 55~60 60~65 65~75
Coefficient of friction
(Static)
(Dynamic)		        

-
0.25

-
0.24

-
0.24

-
0.27

-
0.28

-
0.29
Wear factor mm/km
MPa		       1.5X10⁻⁴ 2.1X10⁻⁴ 2.4X10⁻⁴ 1.0X10⁻⁴ 1.0X10⁻⁴ 2.0X10⁻⁴
Physical properties
Specific gravity		   ASTM
792		     2.95~3.25 1.95~2.10 1.90~2.10 2.0~2.17 1.96~2.16 1.93~2.13
Coefficient of linear
hermal expansion		 10⁻5X1/℃ 25~100℃

25~150℃

25~200℃

25~200℃

   //
⊥
//
⊥
//
⊥
//
⊥		         15.0
5.6
16.5
5.7
19.1
6.4
22.5
7.3		 10.3
4.0
11.5
4.3
13.2
4.7
15.7
5.5
Coefficient of thermal
conductivlty		 kcal/
m·h·℃		             0.39 0.40 0.40
Electrical properties
Dielectric strength		 kv/mm JISD 2120(oil),25℃    
-
-
-
-
-
-
Dielectric constant   JISD
6911,23℃		 10³Hz
106Hz		   -
-		 -
-		 -
-		 -
-		 -
-		 -
-
Dielectric loss
trangent		   JISD
6911,23℃		 10³Hz
106Hz		   -
-		 -
-		 -
-		 -
-		 -
-		 -
-
Volume resistivity Ω-cm ASTM D257     - - - - 8X104 9X102

 

Item Unit Filler contant(wt%) Grass fiber(15%)
MoS2(5%)		 Grass fiber(20%)
Graphite(5%)		 Non-filled
Mechanical propertles
Tensile strength		 MPa ASTM D638   ⊥ 17.2 16 21
Elongation % ASTM D638   ⊥ 250 200 275
Compressive strength MPa 0.2%off set
1% strain
25% strain		 24℃
24℃
24℃		 //
//
//		 10.2
8.2
34.3		 10.6
9.6
36.7		 7.6
5.4
28.0
Compressive modulus MPa 24℃   // 855 980 560
Compressive creep % ASTM

D-621

 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 5.9

3.0		 5.0

2.4		 9.5

4.8
Total deformation % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//
 9.9

8.1		 8.5

6.1		 15.2

14.5
Compression set % ASTM

D-621
 2000psi
24℃,24h
2000psi
100℃,24h		 //

//		 5.2

3.3		 4.2
2.4		 7.0

4.6
Hardness DurometerD Shore, 25℃   // 55~65 58~68 52~62
Coefficient of friction
(Static)
(Dynamic)		        

0.085
0.25
0.073
0.24
0.048
0.22
Wear factor mm/km
MPa		       1.0X10⁻⁴ 0.5X10⁻⁴ 2.0X10⁻⁴
Physical properties
Specific gravity		   ASTM
792		     2.15~2.30 2.20~2.35 2.13~2.19
Coefficient of linear
hermal expansion		 10⁻5X1/℃ 25~100℃

25~150℃

25~200℃

25~200℃

   //
⊥
//
⊥
//
⊥
//
⊥		 12.8
7.1
14.0
7.7
15.2
8.4
17.4
9.4		 11.7
6.1
12.8
6.6
13.9
7.2
15.9
8.3		 11.9
11.0
13.0
11.9
13.6
12.7
15.9
15.1
Coefficient of thermal
conductivlty		 kcal/
m·h·℃		       0.28 0.32 0.20
Electrical properties
Dielectric strength		 kv/mm JISD 2120(oil),25℃    
20.2
10.2		 46.4
Dielectric constant   JISD
6911,23℃		 10³Hz
106Hz		   3.45
3.24		 7.18
6.99		 2.06
2.06
Dielectric loss
trangent		   JISD
6911,23℃		 10³Hz
106Hz		   0.007
0.014		 0.029
0.0071		 0.0001
0.0001
Volume resistivity Ω-cm ASTM D257     3X1015 3X1014 6.5X1018
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