Risorse/Standard Sheet Thickness

Standard Sheet Metal Thickness

Comprehensive gauge-to-thickness reference for all major sheet metal types. Use these charts to select the right material and gauge for your sheet metal fabrication requirements.

Gauge-to-Thickness by Material

Sheet metal gauges vary by material type. The same gauge number represents different thicknesses for steel, stainless steel, aluminum, and copper. Select your material below to see the corresponding thickness values.

Steel

Cold Rolled (SPCC, SPCD, SPCE), Hot Rolled (SS400, Q235), Galvanized (SGCC)

Gauge	Thickness	Typical Applications
10	3.571 mm	Heavy structural brackets, chassis
12	2.769 mm	Automotive panels, mounting plates
14	1.984 mm	General sheet metal enclosures
16	1.587 mm	Sheet metal boxes, standard brackets
18	1.270 mm	Electronics enclosures, thin brackets
20	0.953 mm	Lightweight panels, covers
22	0.792 mm	Thin shields, clips
24	0.635 mm	Spring clips, shims
26	0.478 mm	Very thin spring components

Stainless Steel

304, 304L, 316L, 301, 430

Gauge	Thickness	Typical Applications
12	2.769 mm	Food processing equipment
14	1.984 mm	Chemical tanks, marine hardware
16	1.587 mm	Medical device enclosures
18	1.270 mm	Restaurant equipment, sinks
20	0.953 mm	Decorative panels, trim
22	0.792 mm	Thin enclosures, food trays
24	0.635 mm	Shims, thin covers
26	0.478 mm	Spring components

Aluminum

5052, 6061, 3003, 1100

Gauge	Thickness	Typical Applications
10	3.251 mm	Structural frames, heat sinks
12	2.642 mm	Automotive body panels
14	1.854 mm	Electronics front panels
16	1.290 mm	Enclosure covers, signage
18	1.016 mm	Light enclosures, decorative panels
20	0.813 mm	Nameplates, thin covers
22	0.643 mm	Foil-thickness applications

Copper

C110 (ETP), C122 (DHP), Brass C260, C268

Gauge	Thickness	Typical Applications
12	2.769 mm	Bus bars, heavy electrical contacts
14	1.984 mm	Electrical panels, grounding plates
16	1.295 mm	RF shields, heat exchangers
18	1.024 mm	EMI gaskets, thin contacts
20	0.813 mm	Flexible connectors, decorative trim
22	0.643 mm	Thin EMI shielding

Metric Thickness Quick Reference

For projects specifying metric thickness, use this quick reference table to identify commonly available metric sheet thicknesses and which gauges they correspond to.

Thickness	Available In	Typical Applications
0.5 mm	Steel, Stainless	Very thin shims, spacers
0.8 mm	Steel, Stainless, Aluminum	Thin sheet metal covers
1.0 mm	All materials	Standard thin enclosures, brackets
1.2 mm	All materials	General sheet metal parts
1.5 mm	All materials	Structural brackets, panels
2.0 mm	All materials	Heavy-duty enclosures, frames
2.5 mm	All materials	Mounting plates, structural parts
3.0 mm	All materials	Heavy structural components
4.0 mm	Steel, Stainless, Aluminum	Thick structural parts
5.0 mm	Steel, Stainless	Very thick structural parts
6.0 mm	Steel, Stainless	Maximum standard sheet thickness