Materials Friction

MaterialsFrictional Coefficient (μ)
CleanLubricated
AluminumAluminum1.05- 1.350.3
AluminumSteel0.6
BrassSteel0.350.19
CarbonSteel0.140.11- 0.14
NylonNylon0.15- 0.25
RubberRubber1.16
RubberSteel0.4
SteelSteel0.5- 0.80.16
Polytetrafluoroethylene (PTFE)Polytetrafluoroethylene (PTFE)0.040.04- 0.04
Polytetrafluoroethylene (PTFE)Steel0.05- 0.2
Polyoxymethylene
(POM)
Polyoxymethylene
(POM)
0.2 – 0.35
Polyoxymethylene
(POM)
Steel0.04