This table is meant only as a guide. For any specific application the ideal method of determining the coefficient of friction is by trials.
Surface A Surface B Coefficient of Static Friction μs Coefficient of Kinetic Friction μk
Aluminium Aluminuim 1.05-1.35 1.40
Aluminium Mild Steel 0.61 0.47
Cast iron Cast iron 1.10 0.15
Copper Mild Steel 0.53 0.36
Glass Glass 0.9-1.00 1.00
Graphite Graphite 0.10 0.10
Mild steel Brass 0.51 0.44
Mild Steel Mild Steel 0.74 0.57
Rubber Conrete 1.0 0.80
Teflon Teflon 0.04 0.04