Sheet Metal Gauge Thickness Chart

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Sheet metal is a versatile material widely used in various industries, including automotive, aerospace, construction, and electronics. When designing sheet metal parts, understanding the concept of gauge thickness is essential for creating accurate 3D models and ensuring the manufacturability of the final product. In this comprehensive guide, we will delve into the world of sheet metal gauge thickness and its relevance in 3D modeling.

We will explore the significance of sheet metal gauges, the different gauge systems used worldwide, how to incorporate gauge thickness into your 3D model, and best practices for designing sheet metal parts.

The sheet metal gauge number increases as the thickness decreases, meaning that higher gauge numbers represent thinner sheet metal.

However, sheet metal gauges above 38 are not commonly used in standard gauge systems, and the values might vary based on the specific material and regional standards. Gauge numbers above 38 are usually limited to specific applications or custom requirements.

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Below is a table providing the approximate thicknesses of sheet metal for gauge 3 to 38 in different measurement units:

Sheet Metal Gauge to mm

Here’s a comprehensive table providing the approximate thicknesses of sheet metal for gauge 3 to 38 in millimeters (mm) for standard steel, galvanized steel, stainless steel, and aluminum, brass, copper:

Gauge	Standard Steel (mm)	Galvanized Steel (mm)	Stainless Steel (mm)	Aluminum, Brass, Copper (mm)
3	6.073	6.476	7.620	6.404
4	5.695	6.073	6.401	5.940
5	5.313	5.695	5.987	5.385
6	4.928	5.311	5.595	4.877
7	4.550	4.928	5.209	4.470
8	4.168	4.547	4.877	4.064
9	3.797	4.166	4.572	3.658
10	3.416	3.785	4.214	3.251
11	3.038	3.404	3.889	2.946
12	2.657	3.025	3.556	2.641
13	2.278	2.645	3.175	2.337
14	1.897	2.267	2.845	2.032
15	1.709	1.985	2.540	1.829
16	1.519	1.601	2.286	1.626
17	1.367	1.417	2.032	1.367
18	1.214	1.219	1.829	1.214
19	1.061	1.016	1.651	1.041
20	0.907	0.911	1.448	0.914
21	0.810	0.810	1.270	0.813
22	0.723	0.711	1.067	0.711
23	0.645	0.635	0.914	0.635
24	0.566	0.559	0.813	0.559
25	0.508	0.508	0.711	0.508
26	0.456	0.475	0.660	0.457
27	0.405	0.417	0.559	0.417
28	0.361	0.376	0.508	0.376
29	0.331	0.345	0.457	0.345
30	0.315	0.315	0.406	0.315
31	0.295	0.295	0.356	0.295
32	0.274	0.274	0.330	0.274
33	0.254	0.254	0.279	0.254
34	0.234	0.234	0.229	0.234
35	0.213	0.213	0.203	0.213
36	0.193	0.193	0.178	0.193
37	0.173	0.173	0.152	0.173
38	0.152	0.152	0.127	0.152

The values provided in this table are approximate and may vary slightly based on specific material and manufacturing standards. Always verify the precise thickness specified by the material supplier or manufacturer before working with sheet metal of any gauge to ensure accuracy in your design and fabrication processes.

Sheet Metal Gauge to inch

Here’s a comprehensive table providing the approximate thicknesses of sheet metal for gauge 3 to 38 in inches for standard steel, galvanized steel, stainless steel, and aluminum, brass, copper:

Gauge	Standard Steel (inch)	Galvanized Steel (inch)	Stainless Steel (inch)	Aluminum, Brass, Copper (inch)
3	0.2391	0.2576	0.300	0.252
4	0.2242	0.2382	0.252	0.234
5	0.2092	0.2194	0.237	0.213
6	0.1943	0.2009	0.222	0.192
7	0.1793	0.1819	0.209	0.177
8	0.1644	0.1634	0.194	0.164
9	0.1495	0.1443	0.180	0.145
10	0.1345	0.1285	0.165	0.128
11	0.1196	0.1144	0.150	0.116
12	0.1046	0.1046	0.135	0.104
13	0.0897	0.0897	0.120	0.093
14	0.0747	0.0747	0.105	0.080
15	0.0673	0.0673	0.090	0.072
16	0.0598	0.0598	0.080	0.064
17	0.0538	0.0538	0.072	0.057
18	0.0478	0.0478	0.065	0.049
19	0.0418	0.0418	0.058	0.042
20	0.0359	0.0359	0.051	0.036
21	0.0320	0.0329	0.045	0.032
22	0.0285	0.0286	0.040	0.028
23	0.0254	0.0254	0.036	0.025
24	0.0226	0.0226	0.032	0.023
25	0.0201	0.0201	0.028	0.020
26	0.0179	0.0179	0.025	0.018
27	0.0159	0.0164	0.023	0.016
28	0.0142	0.0147	0.020	0.015
29	0.0126	0.0135	0.018	0.013
30	0.0118	0.0127	0.016	0.012
31	0.0110	0.0118	0.014	0.011
32	0.0102	0.0102	0.013	0.010
33	0.0094	0.0094	0.011	0.009
34	0.0086	0.0086	0.010	0.008
35	0.0077	0.0077	0.009	0.007
36	0.0069	0.0069	0.008	0.006
37	0.0062	0.0062	0.007	0.006
38	0.0054	0.0054	0.006	0.005

Standard Sheet Metal Gauges For Specific Engineering Materials

Sheet metal gauges can vary depending on the specific engineering material used. Different materials have different properties and thickness ranges that are suitable for various applications. Below are standard sheet metal gauges for some common engineering materials:

Steel (Carbon Steel):

Standard Gauge Range: 22 to 12 gauge
Thickness Range (inches): 0.0299 to 0.1051 inches
Thickness Range (millimeters): 0.759 to 2.670 millimeters

Galvanized Steel:

Standard Gauge Range: 22 to 10 gauge
Thickness Range (inches): 0.0299 to 0.1382 inches
Thickness Range (millimeters): 0.759 to 3.512 millimeters

Stainless Steel:

Standard Gauge Range: 22 to 10 gauge
Thickness Range (inches): 0.0299 to 0.1382 inches
Thickness Range (millimeters): 0.759 to 3.512 millimeters

Aluminum:

Standard Gauge Range: 30 to 10 gauge
Thickness Range (inches): 0.0120 to 0.1382 inches
Thickness Range (millimeters): 0.305 to 3.512 millimeters

Brass:

Standard Gauge Range: 30 to 10 gauge
Thickness Range (inches): 0.0100 to 0.1382 inches
Thickness Range (millimeters): 0.254 to 3.512 millimeters

Copper:

Standard Gauge Range: 30 to 10 gauge
Thickness Range (inches): 0.0100 to 0.1382 inches
Thickness Range (millimeters): 0.254 to 3.512 millimeters

Titanium:

Standard Gauge Range: 22 to 10 gauge
Thickness Range (inches): 0.0299 to 0.1382 inches
Thickness Range (millimeters): 0.759 to 3.512 millimeters

Zinc:

Standard Gauge Range: 28 to 10 gauge
Thickness Range (inches): 0.0135 to 0.1382 inches
Thickness Range (millimeters): 0.343 to 3.512 millimeters

The availability of specific gauge thicknesses may vary based on regional standards and manufacturing capabilities. Always refer to the material supplier or manufacturer for the exact gauge options and thicknesses available for your engineering project. Additionally, for critical applications, consult with engineering and design experts to ensure you select the appropriate sheet metal gauge and material for your specific requirements.

Sheet Metal Wire Gauge Size Table Chart

Here’s a comprehensive sheet metal wire gauge size table chart that provides the gauge number, wire diameter in inches, and wire diameter in millimeters:

Gauge	Wire Diameter (inches)	Wire Diameter (millimeters)
0000	0.46	11.684
000	0.409	10.404
00	0.3648	9.266
0	0.3249	8.252
1	0.2893	7.348
2	0.2576	6.544
3	0.2294	5.827
4	0.2043	5.189
5	0.1819	4.621
6	0.162	4.115
7	0.1443	3.665
8	0.1285	3.264
9	0.1144	2.906
10	0.1019	2.588
11	0.0907	2.305
12	0.0808	2.053
13	0.072	1.828
14	0.0641	1.628
15	0.0571	1.45
16	0.0508	1.291
17	0.0453	1.149
18	0.0403	1.024
19	0.0359	0.912
20	0.032	0.812
21	0.0285	0.723
22	0.0254	0.644
23	0.0226	0.573
24	0.0201	0.511
25	0.0179	0.455
26	0.0159	0.405
27	0.0142	0.361
28	0.0126	0.321
29	0.0113	0.287
30	0.010	0.255
31	0.00893	0.227
32	0.00795	0.202
33	0.00708	0.18
34	0.00629	0.16
35	0.00561	0.142
36	0.005	0.127
37	0.00445	0.113
38	0.00397	0.101
39	0.00353	0.089
40	0.00315	0.08

Wire gauge sizes may vary slightly based on different gauge systems and standards. The values provided in this table are based on the American Wire Gauge (AWG) system. Always verify the precise wire diameter specified by the manufacturer or supplier to ensure accuracy in your applications.

Link：Sheet Metal Gauge Thickness Chart

REF: Metal Forging Parts, China 3D Printing Service, Powder Metallurgy Service