|
Materials
|
Dry
|
Lubricated
|
|---|---|---|
|
Steel on steel
|
0.8
|
0.5
|
|
Aluminum on steel
|
0.6
|
0.5
|
|
Copper on steel
|
0.5
|
0.4
|
|
Brass on steel
|
0.5
|
0.4
|
|
Cast iron on steel
|
0.4
|
-
|
|
Brass on nylon
|
0.3
|
-
|
|
Steel on nylon
|
0.3
|
-
|
|
Teflon on nylon
|
0.05
|
0.04
|
|
Hard carbon on carbon
|
0.2
|
0.1
|
|
Copper on copper
|
1.3
|
0.8
|
|
Aluminum on aluminum
|
1.1
|
-
|
|
Nickel on nickel
|
0.7
|
0.3
|
|
Brass on brass
|
0.9
|
0.6
|