Surface Finish · As-Machined

As-Machined

The baseline finish: straight off the machine, fastest and cheapest.

Process specifications

Parameter	Value
Process group	As-Machined
Coating thickness	No coating — surface is the bare machined material at Ra 1.6–3.2 µm default (finer on request).
Tolerance impact	None — this is the reference state. All drawing dimensions and tolerances apply directly to the delivered surface.
Corrosion rating	Depends entirely on the base material — from hours for bare carbon steel to inherent resistance for stainless, titanium and plastics.
Appearance	Bare metal or plastic with visible, slightly directional tool marks; milled and turned features read differently.

⚠ Not suitable for

Bare carbon and alloy steels in humid or outdoor service (they rust within days without protection); cosmetic consumer-facing surfaces where tool marks are objectionable; food, medical or marine stainless applications that require passivation to remove embedded free iron.