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Table 2 Average surface roughness (Ra) values of the alloys ground with the corresponding SiC type emery papers

From: Effect of oxidation and surface roughness on the shear strength of single-lap-joint adhesively bonded metal specimens by tension loading

Surface treatment Ra (μm) Alloy
Grinding 60 grit SiC 1.88 ± 0.52 AA6061
1.88 ± 0.52 AA7075
1.45 ± 0.52 AISI 1080
Grinding 120 grit SiC 1.01 ± 0.15 AA6061
1.01 ± 0.15 AA7075
0.86 ± 0.07 AISI 1080
Grinding 240 grit SiC 0.83 ± 0.05 AA6061
0.83 ± 0.05 AA7075
0.62 ± 0.09 AISI 1080
Grinding 320 grit SiC 0.6 ± 0.07 AA6061
0.6 ± 0.07 AA7075
0.47 ± 0.05 AISI 1080