Metal Injection Molding tolerance

MIM Tolerance:

  Nominal dimensions (mm) General tolerance±mm Special tolerance±mm
Dimensional tolerance ≤10 0.10 0.03
10<L≤20 0.15 0.10
20<L≤30 0.20 0.15
30<L≤50 0.30 0.20
50<L 0.5% 0.4%
Angle General tolerance(±’) Special tolerance(±’)
0.5′ 0.3′
Surface roughness Rmax <12S About 6S
Injector mark 0.05 – 0.1mm
Parting line 0.05 – 0.1mm

The values vary depending on material and shape.