It is imperative that the plate is smooth on both sides, has a very low bending and is not metallic (so as to allow a magnetic field to pass through).
Hello
As colleagues say, the choice of materials depends mainly on the specifications (type of application, friction, temperature, environment, etc.), all these parameters must already be defined before making a choice. For the most part, what we know is that you are looking for a cheap material that does not flex (only under its weight?), magnetic and electrical insulator, and that you would like a clean surface finish with a correct flatness. First of all, the lower the roughness, the more expensive it is, as well as for the flatness tolerance. With a PEEK or fiberglass filled PTFE you could have a plate that does not bend according to these dimensions, a Ra of 1.6, and a flatness achievable at +/- 0.05 safe.
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According to a retired engineer who answered me on another forum, the Polyrey compact reysipur (http://www.polyrey.com/compact/reysipur-stratifi%C3%A9-hpl-compact-fra-fr) would have a maximum bending of 0.12mm at the thickness of 5mm (considering it as a composite).
The problem is that this material is only available in thicknesses 4 and 6mm, so I would like to know precisely the deflection for these two thicknesses. Would anyone know how to do it for me?
See the ISO 178 note
http://plasturgiejp.free.fr/Laboratoire/Comportement%20m%E9canique/Flexion/Cours-flexion%20iso178.pdf
and the result on the type of part in your previous link
http://static.wilsonart.com.cdnga.net/sites/polyrey/files/resources/FT_FR_Reysipur_15032013.pdf
and now what do you think about it knowing that you want to keep 5 mm thick ;-)
and that you only have 4 or 6 mm
@+ ;-)
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