Cutting processes - tolerance and surface roughness

by GarethW

Here's a useful table of tolerance and surface roughness achievable with cutting and machining process (collectively termed "material removal processes"

This information has been collated personally by myself from a variety of sources. If you have any suggestions of processes to include in this table please leave a comment and they will be added.

	Tolerance (mm)		Surface roughness (µm)
Process name	min	max	min	max
Electro- discharge wire cutting	0.01	0.125	0.1	30
Band sawing	0.8	3	0.8	45
Circular sawing	0.2	3	0.8	45
Cropping/guillotining	0.2	2	0,1	12.5
Sheet metal	0.01	1	0,1	12.5
Sheet metal (non-tooled)	0.01	1	0,1	12.5
Water jet cutting	0.1	0.25	3.2	27
Oxyfuel gas cutting	0.8	2	6.3	71
Plasma arc cutting	0.5	2.54	12	128

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