Fiberglass Composite Laminates G10 G11 Fr4 3240 Yellow Epoxy Glass Fiber Sheet

ITEM

UNIT

VALUE

3240

3240-1

Density

g/cm³

1.70~1.90

1.70~1.95

Martens heat resistance (LW)≥

200

200

Flexural strength≥
Perpendicular to lamination
parallel to lamination

MPa

400
300

360
270

Tensile strength≥
Perpendicular to lamination
parallel to lamination

MPa

350
250

320
230

Adhesion force≥

N

5680

5600

Impact strength≥
Perpendicular to lamination
parallel to lamination

kJ/m²

150
100

130
120

Surface resistivity≥
Under normal condition
After impregnated in water

Ω

1×10^13
1×1011

-
-

Volume resistivity≥
Under normal condition
After impregnated in water

Ω.cm

1×10^13
1×1011

-
-

Insulation resistance parallel to lamination≥
Under normal condition
After impregnated in water

Ω

1×10^10
1×108

-
-

Loss tangent, 50Hz≤

-

0.05

-

Pressing strength≥
Perpendicular to lamination
Parallel to lamination

MPa

250
150

-
-

Voltage breakdown perpendicular to lamination in transformer oil at 90±2≥
Thickness:0.5~1mm
Thickness:1.1~2mm
Thickness:2.1~3mm

kV/mm

22
20
18

-
-
15

Voltage breakdown parallel to lamination in transformer oil at 90±2≥

kV

30

28

Area of the sheets

mm

980×1980,1020×2040