STD Copper Foil Specifications
No Item Unit Specification Value TestMethod
1 Nominal Thickness µm 10 12 18 35 70 103 IPC-TM-650
OZ 3/10 3/8 1/2 1 2 3
2 Area Weight g/m2 80.3±10% 107.0±10% 152.5±10% 305±10% 610±10% 915±10%
OZ/ft2 0.3 0.35 0.5 1 2 3
g/in2 15 18 25 50 100 150
3 Purity(including silver) % 99.8 99.8 99.8 99.8 99.8 99.8
4 Tensile Strength At 23°C MPa / / > 205 > 275 > 275 > 275
5 Elongation At 23°C % / / > 2 > 3 > 3 > 3
6 Peel strength(FR-4) N/mm > 0.9 > 1.0 > 1.3 > 1.7 > 1.9 > 2.1
lb/in > 5.0 >5.6 > 7.3 > 9.5 > 10.6 > 13.0
7 Roughness of shiny side(Ra) µm < 0.43 < 0.43 < 0.43 < 0.43 < 0.43 < 0.43
8 Roughness of matte side(Rz) µm < 5 < 5 < 5 < 8 < 10 < 12
9 Weight Electrical Resistance(No treatment) .g.m2 < 0.171 < 0.170 < 0.166 < 0.162 < 0.162 < 0.162
10 Anti-oxidation 200°C 1 hour 
11 SurfaceDefect Pinhole number < 5/100 m2 < 5/1000 m2
Other item / Agreement IPC-4562
12 Roll Standard Roll width mm 1295;1280;1270;1260;1120;1060;630 /
inch 51", 50", 44", 41", 25" /
Roll Leight accept request of consumer /
13 other Provide copper foil with adhesive /