Damn you, sheet metal gods! Why did you create such a stupid system where a “gauge” of one type of metal is a different thickness than the same “gauge” of another metal? The sheet metal gauge chart will help you with your struggle to pick a ‘standard’ size sheet metal whey you are working on a sheet metal design.
All Dimensions in Inches
| Gauge # | Sheet Steel | Strip & Tubing | Aluminum | Stainless Steel |
| 6/0 5/0 4/0 3/0 2/0 |
—- —- —- —- —- |
—- .500 .454 .425 .380 |
.5800 .5165 .4600 .4096 .3648 |
.4687 .4375 .4062 .3750 .3437 |
| 0 1 2 3 4 5 |
—- —- —- .2391 .2242 .2092 |
.340 .300 .284 .259 .238 .220 |
.3249 .2893 .2576 .2294 .2043 .1819 |
.3125 .2812 .2656 .2500 .2344 .2187 |
| 6 7 8 9 10 11 |
.1943 .1793 .1644 .1495 .1345 .1196 |
.203 .180 .165 .148 .134 .120 |
.1620 .1443 .1285 .1144 .1019 .0907 |
.2031 .1875 .1719 .1562 .1406 .1250 |
| 12 13 14 15 16 17 |
.1046 .0897 .0747 .0673 .0598 .0538 |
.109 .095 .083 .072 .065 .058 |
.0808 .0720 .0641 .0571 .0508 .0453 |
.1094 .0937 .0781 .0703 .0625 .0562 |
| 18 19 20 21 22 23 |
.0478 .0418 .0359 .0329 .0299 .0269 |
.049 .042 .035 .032 .028 .025 |
.0403 .0359 .0320 .0285 .0253 .0226 |
.0500 .0437 .0375 .0344 .0312 .0281 |
| 24 25 26 27 28 29 |
.0239 .0209 .0179 .0164 .0149 .0135 |
.022 .020 .018 .016 .014 .013 |
.0201 .0179 .0159 .0142 .0126 .0113 |
.0250 .0219 .0187 .0172 .0156 .0141 |
| 30 31 32 33 34 35 36 37 38 |
.0120 .0105 .0097 .0090 .0082 .0075 .0067 .0064 .0060 |
.012 .010 .009 .008 .007 .005 .004 —- —- |
.0100 .0089 .0080 .0071 .0063 .0056 .0050 .0045 .0040 |
.0125 .0109 .0102 .0094 .0086 .0078 .0070 .0066 .0062 |
Remember, mechanical engineers, if you ever serve on a standards or specifications committee, don’t make up stupid rules and specifications just to be different. Try to make things common so you don’t need extra tools like this sheet metal gauge chart which should be totally unnecessary.