Glass Epoxy Laminates
Machining Services, NEMA G-10, FR-4, G-11
FR-5
Glass-Epoxy Laminates are continuous
woven glass fabric impregnated with epoxy
resin. These materials exhibit outstanding
electrical characteristics and dimensional
stability primarily because water absorption
is virtually non-existent. The FR Grades
contain bromine to make them fire-retardant,
while G-10 and G-11 do not. Therefore, FR-4
can be substitutes for G-10 in most cases,
but G-10 cannot be safely substituted for
FR-4. (Many suppliers have gotten into the
bad habit of referencing material as
G-10/FR-4, where it is technically FR-4.
G-10 is not normally a stock item.) G-11 and
FR-5 have higher operating temperature and
improved strength at higher temperatures
than G-10 and FR-4. These materials are
normally light green in color and come as
sheets, tubes and rods. Glass-Epoxy
Laminates Properties
| Properties |
NEMA
grade
reinforcement~
resin binder |
FR4
glass~
epoxies |
FR5
glass~
epoxy HT |
| |
| lengthwise,
PSI |
40,000 |
40,000 |
| crosswise,
PSI |
35,000 |
35,000 |
| flatwise,
PSI |
35,000 |
35,000 |
| edgewise,
PSI |
60,000 |
60,000 |
| lengthwise,
PSI |
55,000 |
55,000 |
| crosswise,
PSI |
45,000 |
45,000 |
| lengthwise,
PSI x 106 |
2.7 |
2.7 |
| crosswise,
PSI x 106 |
.2. |
2.2 |
| Shear
Strength, PSI |
19,000 |
19,000 |
| flatwise,
ft lb per inch of notch |
7 |
7 |
| edgewise,
ft lb per inch of notch |
5.5 |
5.5 |
| Rockwell
Hardness M scale |
110 |
110 |
| Specific
Gravity |
1.82 |
1.82 |
| cm/cm/
deg C x 10 -5 |
.9 |
.9 |
| .062"
thick, % per 24 hrs |
0.25 |
0.25 |
| .125"
thick, % per 24 hrs |
0.15 |
0.15 |
| .500"
thick, % per 24 hrs |
0.10 |
0.10 |
| .062"
thick |
500 |
500 |
| .125"
thick |
400 |
400 |
| condition
A, 1 megacycle |
0.025 |
0.025 |
| condition
A, 1 megacycle |
5.2 |
5.2 |
Condition:
96 hours at 90%
relative humidity
(in mega ohms) |
200,000 |
200,000 |
| Underwriter
Labs, Classification |
94V-0 |
94V-0 |
| Bond
Strength, in lbs |
2,000 |
1,600 |
| Approximate
degrees F |
285 |
300 |
sheet
mil spec:
Mil-I-24768 / _ _ |
27 |
28 |
| types |
GEE-F |
GEB-F * |
The above information is provided for
informational purposes only. Plastic
Products Inc. believes this data to be
reliable but disclaims any liability for
damages or injury which results from the use
of this data and nothing contained herein
shall constitute a guarantee, warranty
(including warranty of merchantability) or
representation (including freedom from
patent liability) by Plastic Products
Inc. with respect to the data, the
products described, or their use for any
particular purpose, even if that purpose is
known to Plastic Products Inc. |
