Lightning Strike Protection

Common MicroGrid® Materials

Below are charts of commonly processed materials for lightning strike protection in composite aircraft structures. Other alloys, metals, thicknesses and pattern sizes are available. Please consult with our sales engineers for specific material characteristics in regard to your particular aircraft structure.

Aluminum Material Specifications

Dexmet Product Code	2AL8-075F	2AL8-080	4AL8-080F	5AL10-080
Weight –LBS/SF (±10%)	0.013	0.016	0.016	0.028
Weight – GMS/SM (±10%)	66.00	78.12	78.12	136.7
Base Metal Thickness (±10%)	0.002 inch 0.051 mm	0.004 inch 0.102 mm	0.004 inch 0.102 mm	0.005 inch 0.127 mm
LWD (±5%)	0.075 inch 1.905 mm	0.080 inch 2.032 mm	0.080 inch 2.032 mm	0.080 inch 2.032 mm
Overall Thickness (±.001 inch/±.025 mm)	0.002 inch 0.051 mm	0.006 inch 0.152 mm	0.004 inch 0.102 mm	0.006 inch 0.152 mm
Open Area (±5%)	52%	71%	71%	60%

 

Copper Material Specifications

Dexmet Product Code	2CU4-100A	2CU6-100A	3CU7-125A	3CU7-100A
Weight – LBS/SF (±10%)	0.015	0.022	0.029	0.040
Weight – GMS/SM (±10%)	73.3	107.4	141.6	195.3
Base Metal Thickness (±10%)	0.002 inch 0.051 mm	0.002 inch 0.051 mm	0.003 inch 0.076 mm	0.003 inch 0.076 mm
LWD (±5%)	0.100 inch 2.54 mm	0.100 inch 2.54 mm	0.125 inch 3.175 mm	0.100 inch 2.54 mm
Overall Thickness (±.001 inch/±.025 mm)	0.004 inch 0.102 mm	0.005 inch 0.127 mm	0.005 inch 0.127 mm	0.005 inch 0.127 mm
Open Area (±5%)	84%	76%	79%	70%

 

Flattenned Copper Material Specifications

Dexmet Product Code	2CU4-100FA	2CU6-100FA	3CU7-125FA	3CU7-100FA
Weight – LBS/SF (±10%)	0.015	0.022	0.029	0.040
Weight – GMS/SM (±10%)	73.3	107.4	141.6	195.3
Base Metal Thickness (±10%)	0.002 inch 0.051 mm	0.002 inch 0.051 mm	0.003 inch 0.076 mm	0.003 inch 0.076 mm
LWD (±5%)	0.100 inch 2.54 mm	0.100 inch 2.54 mm	0.125 inch 3.175 mm	0.100 inch 2.54 mm
Overall Thickness (±.001 inch/±.025mm)	0.002 inch 0.051 mm	0.002 inch 0.051 mm	0.003 inch 0.076 mm	0.003 inch 0.076 mm
Open Area (±5%)	84%	76%	79%	70%

Explanation of Product Code:

Example: 2CU4 - 100FA

First number represents nominal original thickness
2 = 0.002" (0.051 mm)

Letters are chemical symbol for material
CU = Copper

Number immediately following letters represents strand width
4 = 0.004" (0.102 mm)

Last number indicates the long way of the diamond
100 = 0.100" (2.54 mm)

Any letters following the code stand for post-production processes
F = Flattened
A = Annealed