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I'm looking for examples of frictional materials that have a coefficient of kinetic friction that is as close to equal to their coefficient of static friction as possible.

What is an example of that kind of material (on Earth)? Is there a database of real-world materials that can tell me about this?

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  • $\begingroup$ Many books have lists of material characteristics - worth looking, $\endgroup$
    – Solar Mike
    Commented Jan 15, 2022 at 22:27
  • $\begingroup$ most materials have the kinetic friction close to static friction. Do you have an absolute threshold or relative difference in mind? $\endgroup$
    – NMech
    Commented Jan 15, 2022 at 22:48
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    $\begingroup$ coefficients of friction are for pairs of materials, not just one. Try PTFE (teflon) on PTFE (teflon), perhaps $\endgroup$
    – Pete W
    Commented Jan 16, 2022 at 0:55
  • $\begingroup$ @NMech I don't, but if there's any particularly notable material pairings or a ranked order of those kinds of materials (the least difference possible) that would be what I'm looking for. $\endgroup$
    – Prithvi Boinpally
    Commented Jan 16, 2022 at 5:45

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Steel/Teflon - $\mu_s = \mu_k = 0.27$

Glass/Teflon - $\mu_s = \mu_k = 0.1$

Ice/Ice - $\mu_s = \mu_k = 0.01$

See table here.

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