G-5 and G-9 Glass Melamine Laminate
What is G-9 Material?
G-5 and G-9 Composite laminate is a continuous filament glass cloth with heat resistant melamine resin binder. G9 glass melamine laminate is a very hard, flame resistant grade that has excellent arc resistance and electric strength properties even under Humid or wet conditions. G-5 and G-9 laminate sheet has high mechanical strength and machines well. This product also has good dimensional stability.
What is G-5 Material?
NEMA G-5 laminate is an older designation that has been mostly replaced some years ago by the NEMA G-9 designation, and still may appear on older drawings, but otherwise is interchangeable.
G-5 and G-9 material is especially suited for applications requiring arc and flame resistance as well as stiffness and high mechanical strength.
What Is Micarta G9 Laminate?
Micarda G-9 was the trade name given to G-9 laminates made by Westinghouse that meet the NEMA G-9 type GSG specifications.
Properties, Applications and Availabilities for the G-5/G-9 Sheet
| Properties | Applications | Availabilities |
|---|---|---|
| Excellent electrical properties | Flare bases | Rod: .062″ to 2.000″ |
| Excellent mechanical properties | Yokes | Sheet: .015″ to 1.000″ |
| Heat resistant | Motor wedges | Tubing: Special order, minimums apply |
| Outstanding arc resistance | Terminal boards | Standard Color: Gray |
| Strength under wet conditions | Mounts for switches | |
| Good dimensional stability | Armature end insulation | |
| Hardest laminate grade | Navy switch panels | |
| Stiffest laminate grade |
Specifications
| NEMA GRADE | FED. SPEC. L-L-31 | MIL | MIL SPEC TYPE | JAN-P-13 TYPE LTS | ARMY SPEC. | ASTM D-709 TYPE | NAVY SPEC. |
|---|---|---|---|---|---|---|---|
| G-5 | GRADE: G-5 | MIL-I-24768/8 | GMG | MG-1 | N/A | IV | GMG |
| TYPE IV | MIL-P-15037 | ||||||
| G-9 | GRADE: N/A | MIL-I-24768/1 | GME | N/A | N/A | IV | GME |
| TYPE IV | MIL-P-15037 | ||||||