Sheet metal

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Sheets of stainless steel cover the Chrysler Building
Sheet metal is simply metal formed into thin and flat pieces. It is one of the fundamental forms used in metalworking, and can be cut and bent into a variety of different shapes. Countless everyday objects are constructed of the material. Thicknesses can vary significantly, although extremely thin thicknesses are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate.
Sheet metal is available as flat pieces or as a coiled strip. The coils are formed by running a continuous sheet of metal through a roll slitter.
The thickness of the sheet metal is called its gauge. The gauge of sheet metal ranges from 30 gauge to about 8 gauge. The higher the gauge, the thinner the metal is.
There are many different metals that can be made into sheet metal, such as: Aluminum, brass, copper, steel, tin, nickel and titanium. For decorative uses, important sheet metals include silver, gold, and platinum.
Sheet metal has applications in car bodies, airplane wings, medical tables, roofs for building and many other things. Historically, an important use of sheet metal was in plate armor worn by cavalry, and sheet metal continues to have many decorative uses, including in horse tack.
Contents
1 Gauge
2 Forming processes
2.1 Deep drawing
2.2 Cutting
2.3 Spinning
2.4 Press brake forming
2.5 Roll forming
2.6 Rolling
2.7 Stamping
2.8 Bending
2.9 Ironing
2.10 Wheeling
2.11 Incremental sheet forming
3 See also
4 References
4.1 Notes
4.2 Bibliography
5 External links
//
Gauge
The sheet metal gauge (sometimes spelled "gage") indicates the standard thickness of sheet metal for a specific material. As the gauge number increases, the material thickness decreases.
Sheet metal thickness gauges for steel are based on the weight of steel, allowing more efficient calculation of the cost of material used. The weight of steel is 41.82 pounds per square foot per inch of thickness; this is known as the Manufacturers' Standard Gage for Sheet Steel.[1] For other materials, such as aluminum and brass, the thicknesses will be different.
Standard sheet metal gauges
Gauge
Steel[2]
Galvanized steel
Stainless steel
Aluminum
Zinc[2]
3
0.2391 (6.0731)
-
-
-
0.006
4
0.2242 (5.6947)
-
-
-
0.008
5
0.2092 (5.3137)
-
-
-
0.010
6
0.1943 (4.9352)
-
-
-
0.012
7
0.1793 (4.5542)
-
0.1875
0.1443
0.014
8
0.1644 (4.1758)
0.1681
0.1719
0.1285
0.016
9
0.1495 (3.7973)
0.1532
0.1563
0.1144
0.018
10
0.1345 (3.4163)
0.1382
0.1406
0.1019
0.020
11
0.1196 (3.0378)
0.1233
0.1250
0.0907
0.024
12
0.1046 (2.6568)
0.1084
0.1094
0.0808
0.028
13
0.0897 (2.2784)
0.0934
0.094
0.072
0.032
14
0.0747 (1.8974)
0.0785
0.0781
0.0641
0.036
15
0.0673 (1.7094)
0.0710
0.07
0.057
0.040
16
0.0598 (1.5189)
0.0635
0.0625
0.0508
0.045
17
0.0538 (1.3665)
0.0575
0.056
0.045
0.050
18
0.0478 (1.2141)
0.0516
0.0500
0.0403
0.055
19
0.0418 (1.0617)
0.0456
0.044
0.036
0.060
20
0.0359 (0.9119)
0.0396
0.0375
0.0320
0.070
21
0.0329 (0.8357)
0.0366
0.034
0.028
0.080
22
0.0299 (0.7595)
0.0336
0.031
0.025
0.090
23
0.0269 (0.6833)
0.0306
0.028
0.023
0.100
24
0.0239 (0.6071)
0.0276
0.025
0.02
0.125
25
0.0209 (0.5309)
0.0247
0.022
0.018
-
26
0.0179 (0.4547)
0.0217
0.019
0.017
-
27
0.0164 (0.4166)
0.0202
0.017
0.014
-
28
0.0149 (0.3785)
0.0187
0.016
0.0126
-
29
0.0135 (0.3429)
0.0172
0.014
0.0113
-
30
0.0120 (0.3048)
0.0157
0.013
0.0100
-
31
0.0105 (0.2667)
0.0142
0.011
0.0089
-
32
0.0097 (0.2464)
-
-
-
-
33
0.0090 (0.2286)
-
-
-
-
34
0.0082 (0.2083)
-
-
-
-
35
0.0075 (0.1905)
-
-
-
-
36
0.0067 (0.1702)
-
...(and so on)

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