Sheet Metal Gauge Thickness Chart : CRCA GI Aluminum and Steel

Sheet Metal gauge chart can be used to convert sheet thickness from gauge to mm or inch. Different materials with the same gauge number have different sheet thickness in mm. 

Higher the gauge number, lower will be the sheet thickness. For example 16 gauge CRCA sheet metal measures 1.5 mm thickness. Whereas a 16 gauge aluminum sheet measures 1.3 mm. This article can help engineers in sheet gauge number to mm or inch conversion.

Sheet Metal gauges are not standardized. Several gauge systems are used by manufacturers. Therefore it is recommended to confirm sheet metal gauge number and sheet thickness in mm/inch before ordering material sheets. We suggest you also read this article on sheet metal bending operations.

Sheet Metal Gauge Chart

You can use the following table to convert sheet metal gauge number into sheet thickness in mm for CRCA, GI, Aluminum and stainless steel sheet metal materials.

Gauge NumberCRCAAluminumGalvanized SteelStainless Steel
Sheet Thickness in mm
36.075.83--
45.695.19--
55.314.62-5.55
64.944.11-5.16
74.553.67-4.76
84.183.264.274.19
93.82.93.893.97
103.42.593.513.57
1132.233.133.18
122.662.052.752.78
132.281.832.372.38
141.91.6322
151.71.451.81.79
161.51.291.611.6
171.371.151.461.43
181.21.021.311.27
191.10.911.161.1
200.90.8110.95
210.840.72o.930.87
220.760.64o.850.79
230.680.57o.780.7
240.60.51o.70.6
250.530.45o.630.56
260.450.4o.550.47
270.40.36o.80.44
280.380.32o.470.4
290.340.29o.440.36
300.30.25-0.32
310.270.233628
320.250.20.340.26
330.230.18-0.24
340.210.16-0.22
350.190.14-0.2
360.17--0.18

To sum up, Sheet metal thickness charts are used to convert gauge numbers into sheet thickness in mm or inch. It helps designers in sheet metal product design because designers design parts in mm/inch. Whereas manufacturers provide sheet metal materials in gauges.

We will keep adding more information on sheet metal gauge chart for various sheet metal materials. Please add your suggestions, comments or questions on the sheet metal thickness gauge chart in the comment box. Don’t miss this article on sheet metal deep drawing process.

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