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Laser Cutting Tolerances

For Laser Cut Steel Parts

Thickness Tolerance

Thickness tolerance in accordance with BS EN 10051:2010.

Flatness Tolerance

Flatness tolerance in accordance with BS EN 10029:1991.

laser cut complex profiles

Laser Cutting Tolerances

Laser Tolerances for Lengths and Widths


For rectangular laser cut steel plates, where length L, is defined as the greater of the two dimensions, tolerances on length and width shall be as given in table 1.


For non-rectangular laser cut steel plates, because of the difficulty in defining length and width for non-standard shapes, tolerances will be as given in Table 1, where length L shall be assumed to be the maximum dimension of the part in question.

Circles and Rings

For laser cut steel circles and rings, length L will be understood to be the outside diameter of the part in question and tolerances will be as given in Table 1.

Table 1. – Length and Width Tolerance for Laser Cut Steel Plates
Material Thickness < 500mm 500mm to
< 1500mm
1500mm to
< 3000mm
and over
Up to 1.0mm +/-0.12mm +/-0.12mm +/-0.12mm +/-0.12mm
Over 1.0mm to
+/-0.15mm +/-0.15mm +/-0.15mm +/-0.15mm
Over 3.0mm to
+/-0.20mm +/-0.20mm +/-0.20mm +/-0.20mm
Over 6.0mm to
+/-0.25mm +/-0.25mm +/-0.25mm +/-0.25mm
Over 15.0mm to
+/-0.75mm +/-0.75mm +/-0.75mm +/-0.75mm

 Positional i.e. hole to hole centres +/-0.20mm

laser cut aluminium tolerances

Laser cut electrical steel grade laminations for motors

Laser Cut Electrical Steel Grade Laminations for Motors

Up to 900mm o/d (+/-0.10mm) x 800mm i/d (+/-0.08mm).

Tolerance on teeth and slots +/-0.10m.

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