Gauge Size Chart For Metal
The standard gauges provide thickness for stainless steel, aluminum ,standard steel, galvanized steel.
The size of a gauge (or gage) is a number indicating the thickness of a metal plate, with a larger number indicating a thinner metal plate. The equivalent thickness of each specification size standard is different, and these standards are formulated based on the weight of the given materials board.
The following figure can be used to determine the equivalent plate thickness of the gauge number in the selected gauge size standard, in inches or millimeters.
Stainless Steel
| Gauge | Stainless Steel | Stainless Steel |
| (Ga.) | (inch) | (mm) |
| 1 | 0.2813 | 7.145 |
| 2 | 0.2656 | 6.746 |
| 3 | 0.25 | 6.35 |
| 4 | 0.2344 | 5.954 |
| 5 | 0.2187 | 5.555 |
| 6 | 0.2031 | 5.159 |
| 7 | 0.1875 | 4.763 |
| 8 | 0.1719 | 4.366 |
| 9 | 0.1562 | 3.967 |
| 10 | 0.1406 | 3.571 |
| 11 | 0.125 | 3.175 |
| 12 | 0.1094 | 2.779 |
| 13 | 0.0937 | 2.38 |
| 14 | 0.0781 | 1.984 |
| 15 | 0.0703 | 1.786 |
| 16 | 0.0625 | 1.588 |
| 17 | 0.0562 | 1.427 |
| 18 | 0.05 | 1.27 |
| 19 | 0.0437 | 1.11 |
| 20 | 0.0375 | 0.953 |
| 21 | 0.0344 | 0.874 |
| 22 | 0.0312 | 0.792 |
| 23 | 0.0281 | 0.714 |
| 24 | 0.025 | 0.635 |
| 25 | 0.0219 | 0.556 |
| 26 | 0.0187 | 0.475 |
| 27 | 0.0172 | 0.437 |
| 28 | 0.0156 | 0.396 |
| 29 | 0.0141 | 0.358 |
| 30 | 0.0125 | 0.318 |
| 31 | 0.0109 | 0.277 |
| 32 | 0.0102 | 0.259 |
| 33 | 0.0094 | 0.239 |
| 34 | 0.0086 | 0.218 |
| 35 | 0.0078 | 0.198 |
| 36 | 0.007 | 0.178 |
| 37 | 0.0066 | 0.168 |
| 38 | 0.0062 | 0.157 |
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