Sheet Metal Gauge Sizes

Comprehensive Sheet Metal Gauge Size Chart​

Reference this chart for part sizing in all our materials.

Before there was a way to use physical measurements, gauge size charts were used to describe the thickness of sheet metal materials. However, gauge thickness is dependent on the density of the material, which means that different materials use different gauge charts.

At SendCutSend we provide all of our material options in imperial and metric systems so there’s no confusion on what size material you’re ordering. However, it’s still valuable to understand the different gauge sizes.

Check out the video below to learn more about gauge thickness and reference the following gauge charts to see what materials we have in stock.

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Comprehensive Gauge Size Charts

Aluminum Gauge Chart

Gauge Number Inches (approx) MM (approx) In stock at SendCutSend
7 .1443 3.665
8 .1285 3.264 5052 Aluminum 6061 Aluminum 7075 Aluminum
9 .1144 2.906
10 .1019 2.588 5052 Aluminum
11 .09074 2.305 5052 Aluminum
12 .08081 2.053 5052 Aluminum 6061 Aluminum
14 .06408 1.628 5052 Aluminum 6061 Aluminum
16 .05082 1.291
18 .04030 1.024 5052 Aluminum 6061 Aluminum
20 .03196 .812
22 .02535 .644
24 .02010 .511
26 .01594 .405

Brass Gauge Chart

Gauge Number Inches (approx) MM (approx) In stock at SendCutSend
7 .1443 3.665
8 .1285 3.264 In stock
9 .1144 2.906
10 .1019 2.588
11 .09074 2.305
12 .08081 2.053
14 .06408 1.628 In stock
16 .05082 1.291
18 .04030 1.024 In stock
20 .03196 .812
22 .02535 .644
24 .02010 .511
26 .01594 .405
28 .01264 .321
30 .01003 .255

Copper Gauge Chart

Gauge
Number
Inches (approx)MM (approx)In stock at SendCutSend
7.1804.572In stock
8.1654.191 
9.1483.759 
10.1343.048 
11.1202.305In stock
12.1092.769 
14.0832.108 
16.0651.651In stock
18.0491.245In stock
20.035.889 
22.028.711 
24.022.559 
26.018.457 
28.014.356 
30.012.305 

Mild Steel Gauge Chart

Gauge Number Inches (approx) MM (approx) In stock at SendCutSend
7 .1793 4.554
8 .1644 4.175
9 .1495 3.797
10 .1345 3.416 In stock
11 1196 3.038 In stock
12 .1046 2.656 In stock
14 .0747 1.897 In stock
16 .0598 1.518 In stock
18 .0478 1.214 In stock
20 .0359 .911
22 .0299 .759 In stock
24 .0239 .607
26 .0179 .454
28 .0149 .378

Stainless Steel Gauge Chart

Gauge Number Inches (approx) MM (approx) In stock at SendCutSend
8 .17187 4.365
9 .15625 3.968
10 .14062 3.571
11 .125 3.175 Stainless Steel 304 Stainless Steel 316
12 .10937 2.778 Stainless Steel 304
14 .07812 1.984 Stainless Steel 304
16 .0625 1.587 Stainless Steel 304 Stainless Steel 316
18 .050 1.270 Stainless Steel 304
20 .0375 .9525
22 .03125 .7937 Stainless Steel 304
24 .025 .635

More Resources

Processing Min/Max Part Sizes

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Density Guidelines

LEARN MORE

Design Guidelines

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Materials List

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