No.

Properties

Unit

Normal Value

1

Flexural strength perpendicular to layer

At room temperature

MPa

≥360 (lengthwise)

≥34 (crosswise)

150±2

≥190 (lengthwise)

2

Compressive strength, perpendicular to layer

MPa

≥350

3

Impact strength parallel to layer (Charpy method)

kJ/m2

≥37 (lengthwise)

≥37 (crosswise)

4

Dielectric constant

Under 48Hz62Hz

-

under1Hz

≤5.5

5

Dissipation factor

Under 48Hz62 Hz

-

Under 1MHz.

≤0.04

6

Insulation resistance after immersing in water.

W

≥200

7

Density

g/cm3

1.72.0

8

Water absorption

%

Refer to table 3

9

Voltage resistance parallel to layer(at 90±2 oil for 1min

kV

≥45

10

Insulation resistance parallel to the layer .

At room temperature

MW

≥1.0×106

Immersing in water for 24h

≥5.0×104

Mean thickness

 mm

Normal Value

mg

Mean thickness

mm

Normal Value

mg

0.4

≤16

5

≤24

0.5

≤16

6

≤26

0.6

≤16

8

≤30

0.8

≤17

10

≤33

1.0

≤17

12

≤37

1.2

≤17

14

≤40

1.6

≤18

16

≤44

2.0

≤19

20

≤51

2.5

≤20

25

≤60

3

≤21

Processed by one side to 22.5

≤72

4

≤22