Sheet metal gauge chart
Sheet metal gauge chart: nominal thickness in inches and millimeters for mild steel, galvanized, stainless and aluminum, 7 through 26 gauge.
Sheet metal gauge chart
The chart taped to every brake in Ohio. Steel is Manufacturers' Standard Gauge; aluminum follows the Brown & Sharpe series.
Units
| Gauge | Steel | Galvanized | Stainless | Aluminum |
|---|---|---|---|---|
| 7 | 0.1793 | — | 0.1875 | 0.1443 |
| 8 | 0.1644 | 0.1681 | 0.1719 | 0.1285 |
| 9 | 0.1495 | 0.1532 | 0.1563 | 0.1144 |
| 10 | 0.1345 | 0.1382 | 0.1406 | 0.1019 |
| 11 | 0.1196 | 0.1233 | 0.1250 | 0.0907 |
| 12 | 0.1046 | 0.1084 | 0.1094 | 0.0808 |
| 13 | 0.0897 | 0.0934 | 0.0938 | 0.0720 |
| 14 | 0.0747 | 0.0785 | 0.0781 | 0.0641 |
| 15 | 0.0673 | 0.0710 | 0.0703 | 0.0571 |
| 16 | 0.0598 | 0.0635 | 0.0625 | 0.0508 |
| 17 | 0.0538 | 0.0575 | 0.0563 | 0.0453 |
| 18 | 0.0478 | 0.0516 | 0.0500 | 0.0403 |
| 19 | 0.0418 | 0.0456 | 0.0438 | 0.0359 |
| 20 | 0.0359 | 0.0396 | 0.0375 | 0.0320 |
| 22 | 0.0299 | 0.0336 | 0.0313 | 0.0253 |
| 24 | 0.0239 | 0.0276 | 0.0250 | 0.0201 |
| 26 | 0.0179 | 0.0217 | 0.0188 | 0.0159 |
Nominal values. Mill tolerance on thickness is typically ±10%, so spec the decimal thickness on the drawing, not the gauge number, and let the supplier pick the stock.
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