Surface Finish · Mechanical Finishes

Bead Blasting

The uniform matte look: erases tool marks, hides fingerprints, preps perfect anodizing.

Process specifications

Parameter	Value
Process group	Mechanical Finishes
Coating thickness	No coating — removes <5 µm and leaves a uniform, non-directional matte at Ra 0.8–1.6 µm. A texture change, not a layer.
Tolerance impact	Practically none — removal stays under 5 µm, within almost all machining tolerances. We still mask precision bores, threads and sealing faces by default: the texture change (not the size change) can affect function there.
Corrosion rating	Unchanged — no coating is added, so corrosion behavior stays that of the base material. Pair with anodizing or plating for protection.
Appearance	Uniform, non-directional satin matte that erases machining witness and evens out milled vs turned features; fine media gives silk, coarse media a pronounced matte.

⚠ Not suitable for

Mirror or low-roughness specs of Ra ≤0.4 µm (blasting raises roughness — that is polishing territory); unmasked sealing faces, precision bores and threads where surface texture is functional; thin delicate features that could distort under media impact.