519-218-9525

Sheet metal gauge chart

Gauge to thickness for the sheet we cut, form and weld.

A gauge number means a different thickness for each material, so a 14 gauge steel part and a 14 gauge aluminum part are not the same thickness. Put the thickness on your drawing, in inches or millimetres, and we will match it to the sheet that is available.

Gauge to thickness

GaugeMild steelGalvanized steelStainless steelAluminum
70.1793 in
4.55 mm		–0.1875 in
4.76 mm		–
80.1644 in
4.18 mm		0.1681 in
4.27 mm		0.1719 in
4.37 mm		0.1285 in
3.26 mm
100.1345 in
3.42 mm		0.1382 in
3.51 mm		0.1406 in
3.57 mm		0.1019 in
2.59 mm
110.1196 in
3.04 mm		0.1233 in
3.13 mm		0.1250 in
3.17 mm		0.0907 in
2.30 mm
120.1046 in
2.66 mm		0.1084 in
2.75 mm		0.1094 in
2.78 mm		0.0808 in
2.05 mm
140.0747 in
1.90 mm		0.0785 in
1.99 mm		0.0781 in
1.98 mm		0.0641 in
1.63 mm
160.0598 in
1.52 mm		0.0635 in
1.61 mm		0.0625 in
1.59 mm		0.0508 in
1.29 mm
180.0478 in
1.21 mm		0.0516 in
1.31 mm		0.0500 in
1.27 mm		0.0403 in
1.02 mm
200.0359 in
0.91 mm		0.0396 in
1.01 mm		0.0375 in
0.95 mm		0.0320 in
0.81 mm
220.0299 in
0.76 mm		0.0336 in
0.85 mm		0.0312 in
0.79 mm		0.0253 in
0.64 mm
240.0239 in
0.61 mm		0.0276 in
0.70 mm		0.0250 in
0.64 mm		0.0201 in
0.51 mm
260.0179 in
0.45 mm		0.0217 in
0.55 mm		0.0187 in
0.47 mm		0.0159 in
0.40 mm

Mild and galvanized steel follow the Manufacturers' Standard Gauge, stainless steel the US Standard Gauge and aluminum the American Wire Gauge (Brown & Sharpe). Mills and suppliers vary slightly, so treat these as nominal thicknesses.

Thicker than 7 gauge

Above about 3/16 inch (4.8 mm), material is plate and is called by its thickness, such as 1/4 inch, 3/8 inch or 1/2 inch. We roll and form plate as well as sheet; the 316 stainless thrust collar we made for a city water main was rolled from 1/2 inch plate.

Which gauges we keep in stock: mild steel 16 to 10 gauge, 304 and 316 stainless 16 to 11 gauge, 5052 aluminum 0.063 to 0.125 inch.

What to put on your drawing

Not sure which thickness you need? Send us the load and the use, and our design and engineering team will suggest one. See bend radius and flange chart for how thickness sets the smallest bend.

Have a part in mind?

Send us your drawings, models or a sketch. We will come back with a plan and a quote. Or call 519-218-9525.

Send us your drawing