From: Effect of oxidation and surface roughness on the shear strength of single-lap-joint adhesively bonded metal specimens by tension loading
Alloy
a
b
c
d
AA6061
−0.4417
2.705
−4.5433
14.4
AA7075
−1.255
8056
−16.705
20.4
AISI 1080 steel
−7.2383
49.62
−97.752
78.15