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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 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%
130° C 130° C  140° C  125° C  125° C 125 C 125° C 140° C
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 --  --  -- 
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/ 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%
130° C 140° C / 170 C 130° C / 140 C 130 C° / 140 C 170 C° / 180 C 170° C / 220 C 190° C    
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

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