No

Property

Unit

Normal Value

1

Flexural strength perpendicular to layer

At room temperature

MPa

≥340

150±2

2

Apparent flexural elastic modulus

MPa

≥(24000)

3

Compressive strength, perpendicular to layer

MPa

≥350

4

Impact strength parallel to layer (Charpy method)

kJ/m2

≥33

5

Impact strength parallel to layer.(Cantilever beam method)

kJ/m

≥34

6

Shear strength, parallel to the layer

MPa

≥30

7

Tensile strength

Lengthwise

MPa

≥(300)

Crosswise

8

Electric strength,perpendicular to the layerat 90±2 oil.

MV/m

retail data see the standard

9

Breakdown voltage, perpendicular to layer direction.

kV

≥35

10

Dielectric constant

Under 48Hz62Hz

≤5.5

under1Hz

≤5.5

11

Dissipation factor

Under 48Hz62 Hz

≤0.04

Under 1MHz.

≤0.04

12

Insulation resistance after immersing in water.

W

≥5.0×108

13

Comparative tracking index.

≥200

14

Heat resistance for long time.

≥130

15

Matin`s temperature

under consideration

16

Density

g/cm3

1.71.9

17

Water absorption

%

retail data see the standard

Note: The value in the parentheses for Type 3240 is typical value. Not used as the requirement only for reference.