361 South Road
East Arlington VT 05252
Phone:(802) 375-0011
Fax:(802) 375-0022
E-mail Inquires:
service@keplastics.com
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 |
|---|---|---|---|
| The above information is provided for informational purposes only. K&E 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 K&E Plastics with respect to the data, the products described, or their use for any particular purpose, even if that purpose is known to K&E Plastics. | |||
| 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 * | |