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Gauge (ga) Standard Steel Thickness (inches) Galvanized Steel Thickness (inches) Aluminum Thickness (inches)
3 0.2391 0.2294
4 0.2242 0.2043
5 0.2092 0.1819
6 0.1943 0.1620
7 0.1793 0.1443
8 0.1644 0.1285
9 0.1495 0.1532 0.1144
10 0.1345 0.1382 0.1019
11 0.1196 0.1233 0.0907
12 0.1046 0.1084 0.0808
13 0.0897 0.0934 0.0720
14 0.0747 0.0785 0.0641
15 0.0673 0.0710 0.0571
16 0.0598 0.0635 0.0508
17 0.0538 0.0575 0.0453
18 0.0478 0.0516 0.0403
19 0.0418 0.0456 0.0359
20 0.0359 0.0396 0.0320
21 0.0329 0.0366 0.0285
22 0.0299 0.0336 0.0253
23 0.0269 0.0306 0.0226
24 0.0239 0.0276 0.0201
25 0.0209 0.0247 0.0179
26 0.0179 0.0217 0.0159
27 0.0164 0.0202 0.0142
28 0.0149 0.0187 0.0126
29 0.0135 0.0172 0.0113
30 0.0120 0.0157 0.0100
31 0.0105 0.0142 0.0089
32 0.0097 0.0134 0.0080
33 0.0090 0.0071
34 0.0082 0.0063
35 0.0075 0.0056
36 0.0067
GAUGE no. Non-Ferrous Brown & Sharp Steel Sheets Strip & Tubing Birmingham or Stubs
lbs./Sq. ft. 1100,6061 Aluminum Gauge Decimal lbs./Sq. ft. Alloy 260 Brass Gauge Decimal lbs./Sq. ft. Steel Strip Gauge Decimal lbs./Sq. ft. Steel Strip
000000  –   .5800 – – – – –
00000 –   .5165 – – –   .500   20.40
0000 –   .4600 – – –   .454   18.52
000 –   .4096 – – –   .425   17.34
00 –   .3648 – – –   .380   15.50
0 –   .3249 – – –   .340   13.87
1 –   .2893 – – –   .300   12.24
2 –   .2576 – – –   .284   11.59
3 –   .2294 – .2391 9.754   .259   10.57
4 –   .2043 – .2242 9.146   .238   9.710
5 –   .1819 – .2092 8.534   .220   8.975
6   2.286   .1620   7.185 .1943 7.926   .203   8.281
7   2.036   .1443   6.400 .1793 7.315   .180   7.343
8   1.813   .1285   5.699 .1644 6.707   .165   6.731
9   1.614   .1144   5.074 .1495 6.099   .148   6.038
10   1.438   .1019   4.520 .1345 5.487   .134   5.467
11   1.280   .0907   4.023 .1196 4.879   .120   4.895
12   1.140   .0808   3.584 .1046 4.267   .109   4.447
13   1.016   .0720   3.193 .0897 3.659   .095   3.876
14   .905   .0641   2.843 .0747 3.047   .083   3.386
15   .806   .0571   2.532 .0673 2.746   .072   2.937
16   .717   .0508   2.253 .0598 2.440   .065   2.652
17   .639   .0453   2.009 .0538 2.195   .058   2.366
18   .569   .0403   1.787 .0478 1.950   .049   1.999
19   .507   .0359   1.592 .0418 1.705   .042   1.713
20   .452   .0320   1.419 .0359 1.465   .035   1.428
21   .402   .0285   1.264 .0329 1.342   .032   1.305
22   .357   .0253   1.122 .0299 1.220   .028   1.142
23   .319   .0226   1.002 .0269 1.097   .025   1.020
24   .284   .0201   .892 .0239 .975   .022   .898
25   .253   .0179   .794 .0209 .853   .020   .816
26   .224   .0159   .705 .0179 .730   .018   .734
27   .200   .0142   .630 .0164 .669