Surface Roughness Sample Card

In manufacturing, you can benefit from the surface roughness sample card to approximately check the Ra value used to define the surface roughness of parts.

Kaynak: https://proleantech.com/surface-roughness-everything-you-need-to-know/

Ra 0,1 μm: ultra-smooth, polished surface

Ra 0,2-0,5 μm: mirror-like finish

Ra 1,0-2,0 μm: satin finish

Ra 3,2 μm: standart industrial finish

Ra 6,3 μm: rough, as-cast surface

Ra 12,5 μm: highly rough, blasted surface