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G-11
Machining G-11 insulating Parts:

JY machinery is the professional manufacturer of electrical insulating parts G-11.
Precision further processing and stability guarantee of material have made us became the solver of electric insulation technology project.
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G-11 & FR-5 epoxy glass fiber cloth laminates (glass fabric reinforced laminates), which is made of a continuous filament glass cloth material with high temperature epoxy resin.


The features of G11:
-Elevated temperatures to 180°C
-Fire retardant(UL 94V-0)
-Excellence mechanical strength
-Excellent voltage resistance (electric strength≥16Kv/mm)
-Excellent electrical performance


NEMA Grade G11 glass epoxy laminate properties:

No.

Test Item

Test condition

 Unit

Standard Value

Testing Result

1

Density

ASTM D-792

 g/cm3

‐‐

1.8

2

Moisture Absorption (0.125”)

ASTM D-570

 %

0.25 max

0.01

3

Breakdown Voltage              Condition A
(0.062”)                               Condition D-48/50

ASTM D-149

 kV

45 min
40 min

>50
>50

4

Permittivity (0.187'')             Condition A
                                             Condition D-24/30

ASTM D-150

‐‐

5.20
5.40

4.7
4.8

5

IZOD Impact Strength ((0.125”)        Length-Wise
                                                           Cross-Wise

ASTM D-256

 ft-lb/in
Notched

7.0 min
5.5 min

11
10

6

Flexural Strength                            Length-Wise
                                                        Cross-Wise

ASTM D-790

 psi

‐‐

80,000
70,000

7

Flexural Modulus                           Length-Wise
                                                       Cross-Wise

ASTM D-790

 psi

‐‐

3,000
2,700

8

Tensile Strength                             Length-Wise
                                                       Cross-Wise

ASTM D-638

 psi

‐‐

43,000
37,000

9

Compressive Strength

ASTM D-695

 psi

‐‐

63,000

10

Hardness Rockwell M

ASTM D-785

 ‐‐

‐‐

M112

11

Bonding Strength (0.500”)                               Condition A
                                                                          Condition D-48/50

ASTM D-229

 Lb (kg)

1,600 min
1,500 min

2,200 (998)
2,000 (907)

12

Max Operating Temp

‐‐

 °F/℃

‐‐

329 / 165

13

Coefficient of Linear Thermal Expansion            Length-wise
                                                                              Cross-wise

ASTM D-696

 X 10-5  in./in./°F

‐‐

0.72
0.83

14

Flammability Rating

UL94

 Class

HB

VO3

15

Dissipation Factor @ 1 MHz                           Condition A
 (0.187”)                                                            Condition D-24/30

ASTM D-150

 ‐‐

0.025 max
0.035 max

0.014
0.017

16

Dielectric Strength (V/mil) short time, 1/8" thick

ASTM D-149

 V/mil

‐‐

900

17

Arc Resistance

ASTM D-495

 Sec

‐‐

120

18

Comparative Tracking Index (0.125”)

ASTM D-3638

 V

‐‐

180



Standard Size:1020x1220mm,1020x2040mm


Popular Applications:
-Military Industry
-Transformer
-New Energy
-Generation Equipment
-Medical apparatus and instruments
-transmission & Distribution
-Switchgear
-Frequency Converter
-Circuit Breaker

-Motor


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