See the following document..
Surface Roughness and Static Surface Friction Coefficient
How to calculate the co-efficient of friction value for a given surface finish of a surface.
Any formula available to calculate the co-efficient of friction. For example : Calculating the co-efficient of friction value (Mu) for ground component surface or Milled component surface or turned component surface.
Hemandhakumar
See the following document..
Surface Roughness and Static Surface Friction Coefficient
Tell me and I forget. Teach me and I remember. Involve me and I learn.