Tolerances

Our lasers have a typical cutting accuracy of within 0.5mm.

Edge Squareness

Plate Thickness (mm)Edge Squareness Tolerance (mm)
3-50mm1mm
60-150mm2mm
160-200mm3mm
225-300mm5mm

Length and Width

Tolerance up to 1500mm (add 1mm for every 1500mm)

Plate Thickness (mm)Length and Width Tolerance up to 1500mmLength and Width Tolerance extra per 1500mm
3-50mm+-2mm1mm
60-150mm+-3mm1mm
160-200mm+-5mm1mm
225-300mm+-5mm1mm

Rectangle Squareness Tolerance

Measured from corner to corner

Plate Thickness (mm)Length < 1000mmLength 1000mm to 2500mmLength 2510mm to 3500mmLength 3510mm and over
3-50mm2mm3mm4mm5mm
60-150mm3mm4mm5mm6mm
160-200mm5mm6mm7mm8mm
225-300mm5mm6mm7mm8mm

Cut Hole Tolerance

Measured from corner to corner

Hole DiameterTolerance (top)Tolerance (bottom)
3-50mm+-2mm+-2mm
60-150mm+-3mm+-2mm
160-200mm+-5mm+-2mm
225-300mm+-5mm+-2mm

Other Technical Information

Plasma Cut Holes vs Drilling

Plasma cut holes are significantly cheaper than drilled holes, however there are considerations that must be made to decide which option is best for you:

  1. Cut Hole diameters should always be 2mm larger than the plate thickness, otherwise hole shape can be out of round with a ragged finish.
  2. Cut holes can vary in diameter by some 4mm overall. OK for bolt holes as long as hole accuracy is not critical.  Should request holes to be 2mm larger than required.
  3. If the hole tolerance is critical then drilled holes should be requested.

Heat Affected Area on Quench and Temper Plate

Although a lot of care is taken when cutting Q&T there will always be a minimal heat affected zone that will have significantly lower hardness than the rest of the plate.  Jobs should not be tested after cutting or welding due to the heat used.

Bending

Different strength materials have limitations on how tight the part can be bent.  This needs to be taken into account when designing the part.