Sheet Metal Gauge Chart

Sheet metal gauge chart: We supply Full Sheets, Part Sheets, Cut to Size and CNC shape cutting, we can take DXF and most common file types.

We can TIG weld Copper, Brass, Bronze and Stainless, and MIG weld Aluminium, Corten and Mild Steel. Zinc and Pewter are soldered. Information on zinc gauge (zg) is also given on this page.

It is possible to TIG weld zinc but the fumes are quite toxic so care must be exercised.

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At Metal Sheets Ltd, we take pride in offering an extensive range of high-quality sheet metals, available in a variety of sizes and thicknesses to meet your project needs. Our selection includes premium copper and brass sheets, which can be sourced in dimensions up to 3000mm x 1000mm and 8ft x 4ft, with thicknesses reaching up to 3mm.

We also provide zinc sheets in sizes up to 3000mm x 1100mm and the standard metric 8ft x 4ft, with a maximum thickness of 1.5mm. For those interested in unique materials, our corten steel sheets are available in sizes up to 2500mm x 1250mm, while pewter sheets come in dimen

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Natural Zinc

Understanding Zinc Gauge Chart

It’s important to note that zinc sheet has a unique gauge system that differs from traditional SWG measurement methods used for materials like steel and aluminum. Known as Zinc Gauge (ZG), the system operates inversely compared to other sheet metal gauges—the thickness actually increases as the gauge number goes up.

While zinc gauge isn’t commonly referenced in most sheet metal fabrication practices, familiarity with it is advantageous, especially if you encounter gauges instead of thicknesses in specifications.

For reference, here is a selection of zinc sheet gauges (zg) and their nearest corresponding thickness in mm:

6 zg = 0.3mm
7 zg = 0.35mm
8 zg = 0.40mm
9 zg = 0.45mm
10 zg = 0.5mm
11 zg = 0.6mm
12 zg = 0.7mm
13 zg = 0.8mm
14 zg = 0.9mm
15 zg = 1.0mm
16 zg = 1.1mm
17 zg = 1.2mm
18 zg = 1.4mm
19 zg = 1.5mm
20 zg = 1.8mm
21 zg = 2.0mm
22 zg = 2.3mm
23 zg = 2.5mm
24 zg = 3.0mm

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SWG	INCH	MM	SWG	INCH	MM
7/0	0.500	12.70	23	0.024	0.61
6/0	0.464	11.79	24	0.022	0.56
5/0	0.432	10.97	25	0.0020	0.51
4/0	0.400	10.16	26	0.018	0.46
3/0	0.372	9.45	27	0.016	0.42
2/0	0.348	8.84	28	0.015	0.38
1/0	0.324	8.24	29	0.014	0.35
1	0.300	7.62	30	0.012	0.32
2	0.276	7.01	31	0.012	0.30
3	0.252	6.40	32	0.011	0.27
4	0.232	5.89	33	0.010	0.25
5	0.212	5.39	34	0.009	0.23
6	0.192	4.88	35	0.008	0.21
7	0.176	4.47	36	0.008	0.19
8	0.160	4.06	37	0.007	0.17
9	0.144	3.66	38	0.006	0.15
10	0.128	3.25	39	0.005	0.13
11	0.116	2.95	40	0.005	0.12
12	0.104	2.64	41	0.004	0.11
13	0.092	2.34	42	0.004	0.10
14	0.080	2.03	43	0.004	0.09
15	0.072	1.83	44	0.003	0.08
16	0.064	1.63	45	0.003	0.07
17	0.056	1.42	46	0.002	0.06
18	0.048	1.22	47	0.002	0.05
19	0.040	1.02	48	0.002	0.04
20	0.036	0.91	49	0.001	0.03
21	0.032	0.81	50	0.001	0.03
22	0.028	0.71

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If you have a project requirement and would like to make some initial enquiries, please get in touch. Please contact us via email sales@metalsheets.co.uk, give us a call on 0151 526 4777, or fill the contact form. We’re looking forward to hearing from you.
Alternatively, shop safely and securely and purchase sheet metals via this website.

Sheet Metal Gauge Chart

Our Sheet Metal Stocks

Stock Sheet Information VISIT STORE

Stock Sheet Information VISIT STORE

Understanding Zinc Gauge Chart

Understanding Zinc Gauge Chart

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