Friction Coeffiicient for Teflon and Aluminum

General Magnaplate gives 0.24 for a 6061-T6 aluminum plate on top of a virgin white Teflon plate.

Tom

Just google: "friction coefficients of teflon" and you will get a whole table of coefficients of most engineering matierials. But you must remember that there are different alloys of aluminium and that there are the so- called filled PTFEs. The latter have a much less coefficient that plain teflon. Here are two filled PTFEs that are in common use; Rulon D and Rulon C. Spencer.

Several other factors to consider. The aluminum surface finish will affect the coefficient. A rough finish will give a higher reading than a polished one. Also , there is a big differece between the dynamic coefficient and the static one. Once you get the sliding action going , the coefficient drops.

Another thing that happens with two very smooth surfaces...you will observe a "decal" effect where the two surfaces want to stick together. This is prevented by using a textured teflon surface such as a teflon coated fabric

The lowest coefficient you can expect is about 0.2

One other point of information...Teflon is a trade name owned by DuPont. The generic term for Teflon is PTFE.....polytetrafluoroethylene