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Design guide

Sheet metal gauge thickness chart.

Gauge numbers mean different thicknesses for steel, stainless, aluminum and galvanized. Here is the chart we use.

GaugeSteel (in)Stainless (in)Aluminum (in)Galvanized (in)
10.1345.1406.1019.1382
11.1196.1250.0907.1233
12.1046.1094.0808.1084
14.0747.0781.0641.0785
16.0598.0625.0508.0635
18.0478.0500.0403.0516
20.0359.0375.0320.0396
22.0299.0312.0253.0336

How to read it

Thicknesses are nominal, in inches. Actual sheet varies slightly within mill tolerance, so put the decimal thickness on your drawing for critical parts.

These are general guidelines. FoxQuote checks every part against our actual machines and tooling, and tells you exactly what to change.

So, what do you want to build?

Send a model, a drawing or a napkin sketch. We'll price the part, the program or the whole product.