en.wikipedia.org/wiki/Friction

The coefficient of friction (COF), often symbolized by the Greek ... Rougher
surfaces tend to have higher effective values.

www.engineeringtoolbox.com/friction-coefficients-d_778.html

It is commonly thought that the static coefficients of friction are higher than the
dynamic or kinetic values. This is a very simplistic statement and quite misleading
...

www.engineersedge.com/coeffients_of_friction.htm

Table of static and dynamic friction coeffcient and friction equations given in
imperial and SI metric units.

blog.mechguru.com/machine-design/typical-coefficient-of-friction-values-for-common-materials/

Sep 2, 2011 ... The static and kinetic friction coefficient values reference table shown in this
article will be helpful for finding the COF values of commonly used ...

www.tribology-abc.com/abc/cof.htm

Friction coefficients, table. ... Coefficient of friction for a range of material
combinations ... http://www.engineershandbook.com/Tables/frictioncoefficients.
htm

www.roymech.co.uk/Useful_Tables/Tribology/co_of_frict.htm

Jan 17, 2013 ... A table below shows approximate friction coefficients for various materials. All
values are approximate and are only suitable for guidance only.

www.carbidedepot.com/formulas-frictioncoefficient.htm

Coefficient for Static Friction of Steel Chart. ... Materials and Material
Combinations, Coefficient of Friction. Clean, Lubricated. Steel, 0.74, 0.16. Copper
-lead alloy ...

peer.berkeley.edu/research/peertestbeds/UCS/Hutchison 29 Jul 2002 Friction Tests.pdf

coefficients of friction (static and kinetic) are therefore important to assist in ...
values due to the vacuum created between the rubber pad and the bench top.

engineering.nyu.edu/gk12/Information/Vault_of_Labs/Physics_Labs/static and kinetic friction.doc

Table 1[1, 2] has typical values of static and kinetic friction for different material
combinations. Note that the static coefficient of friction is higher than the kinetic ...

hypertextbook.com/facts/2005/steel.shtml

Friction is a resistive force that prevents two objects from sliding freely agaisnt
each other. The coefficient of friction (µ) is a number that is the ratio of the
resistive ...