NEMA Grade Laminates
Lamitex ® grade materials that meet NEMA specifications are used in over 60 markets and hundreds of applications annually.
We are able to supply small and large quantities of sheets, rods, tubes (round/square/rectangular), angles, and custom fabricated parts. Our wide range of composites make it easy for us to designate the best fit for your composite insulation or bearing requirements.
Below you will find a cross-reference table containing some of the Lamitex ® sheet materials that meet NEMA specifications.
| Grade Designation: | X | XX | XXX | C | CE | L | LE |
|---|---|---|---|---|---|---|---|
| Base weave material: | Paper | Paper | Paper | Cotton | Canvas | Linen | Linen |
| Added Fill(er): | -- | -- | -- | -- | -- | - - | -- |
| Resin [binding agent]: | Phenolic | Phenolic | Phenolic | Phenolic | Phenolic | Phenolic | Phenolic |
| Military Spec.: | 24768/ 12 - PBM | 24768/ 11 - PBG | 24768/ 10 - PBE | 24768/ 16 FBM | 24768/ 14 FBG | 24768/ 15 FBI | 24768/ 13 FBE |
| Compressive (D695): | 36,000 psi (flat)
19,000 psi (Edge) |
34,000 psi (flat) | 30,000 psi (flat) | 37,000 psi (flat)
23,500 psi (Edge) |
39,000 psi (flat)
24,500 psi (Edge) |
38,000 psi (flat)
23,500 psi (Edge) |
37,000 psi (flat)
24,500 psi (Edge) |
| Tensile (D638): | 16,000 psi (L)
13,000 psi (C) |
16,000 psi (L)
13,000 psi ( C) |
14,000 psi (L)
12,000 psi ( C) |
10,000 psi (L)
8,000 psi ( C) |
11,000 psi (L)
9,000 psi ( C) |
14,000 psi (L)
10,000 psi ( C) |
11,000 psi (L)
9,000 psi ( C) |
| Flexural (D229): | 25,000 psi (L)
22,000 psi ( C) |
15,000 psi (L)
14,000 psi ( C) |
20,000 psi (L)
15,000 psi ( C) |
17,000 psi (L)
16,000 psi ( C) |
16,500 psi (L)
14,000 psi ( C) |
16,500 psi (L)
14,500 psi ( C) |
16,000 psi (L)
14,000 psi ( C) |
| Moisture abs (D229): | 3.30% | 1.30% | 0.95% | 2.50% | 1.60% | 1.60% | 1.30% |
| Temperature Index: | 130° C (266° F) | 130° C (266° F) | 140° C (284° F) | 125° C (257° F)
|
125° C (257° F)
|
125° C (257° F)
|
125° C (257° F) |
| CTE | 20.0cm/C x 10^-6 | 20.0cm/C x 10^-6 | 20.0cm/C x 10^-6 | 20.0cm/C x 10^-6 | 20.0cm/C x 10^-6 | 18.0cm/C x 10^-6 | 20.0cm/C x 10^-6 |
| Arc Resistance (D495): | 83 sec | 31 sec | 110 sec | 15 sec | 36 sec | 54 sec | 139 sec |
| Dielectric Breakdown | 23.0 kV | 23.0 kV | 50.0 kV | 43 kV | 35.0 kV | 35 kV | 50 kV |
Key:
Tensil/Flex: (L) = Lengthwise, (C) = Crosswise - Temp Index: Electrical/Mechanical
| Grade Designation: | G5 | G9 | G3 | G10 | FR4 | G11 | G7 | G30 |
|---|---|---|---|---|---|---|---|---|
| Base weave material: | Glass | Glass | Glass | Glass | Glass | Glass | Glass | Glass |
| Added Fill(er): | -- | -- | -- | Bromine Compound | -- | -- | -- | |
| Resin [binding agent]: | Melamine | Melamine | Phenolic | Epoxy | Epoxy | Epoxy | Silicone | Polyimide |
| Military Spec.: | 24768/ 8 GMG | 24768/ 1 GME | 24768/ 18 GPG | 24768/ 2 GEE | 24768/ 27 GEE-F | 24768/ 3 GEB | 24768/ 17 GSG | |
| Compressive (D695): | 70,000 psi (flat)
25,000 psi (Edge) |
70,000 psi (flat)
25,000 psi (Edge) |
76,000 psi (flat)
25,000 psi (Edge) |
68,000 psi (flat)
35,000 psi (Edge) |
60,000 psi (flat)
35,000 psi (Edge) |
68,000 psi (flat)
35,000 psi (Edge) |
45,000 psi (flat)
14,000 psi (Edge) |
94, 276 psi (flat) |
| Tensile (D638): | 37,000 psi (L)
30,000 psi ( C) |
37,000 psi (L)
30,000 psi ( C) |
42,000 psi (L)
34,000 psi ( C) |
40,000 psi (L)
32,000 psi ( C) |
40,000 psi (L)
35,000 psi ( C) |
40,000 psi (L)
35,000 psi ( C) |
23,000 psi (L)
18,500 psi ( C) |
43,512 psi (L) |
| Flexural (D229): | 44,000 psi (L)
38,000 psi ( C) |
55,000 psi (L)
38,000 psi ( C) |
40,000 psi (L)
30,000 psi ( C) |
55,000 psi (L)
45,000 psi ( C) |
55,000 psi (L)
45,000 psi ( C) |
55,000 psi (L)
45,000 psi ( C) |
20,000 psi (L)
18,000 psi ( C) |
65,268 psi (L) |
| Moisture abs (D229): | 2.00% | 0.75% | 2.00% | 0.15% | 0.15% | 0.15% | 0.35% | 0.17% |
| Temperature Index: | 140° C (284° F)
|
140° C (284° F) |
140° C / 170° C (284° F / 338° F) |
130° C / 140° C (266° F / 284° F) |
130° C / 140° C (266° F / 284° F) |
170° C / 180° C (338° F / 356° F) |
170° C / 220° C (338° F / 428° F) |
190° C / -- (374° F / --) |
| CTE | 10.0cm/C x 10^-6 | 10.0cm/C x 10^-6 | 1.8cm/C x 10^-5 | 9.6cm/C x 10^-6 | 10.0cm/C x 10^-6 | 9.0cm/C x 10^-6 | 10.0cm/C x 10^-6 | |
| Arc Resistance (D495): | 185 sec | 195 sec | 180 sec | 120 sec | 140 sec | 120 sec | 180 sec | |
| Dielectric Breakdown | 23 kV | 77 kV | 32.0 kV | 48 kV | 65 kV | 45 kV | 32 kV |
Key:
Tensil/Flex: (L) = Lengthwise, (C) = Crosswise -
Temp Index: Electrical/Mechanical