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Aluminum Sheet Thickness Selection Guide: From Gauge to Millimeter

Popularity:10 Update time:2025-03-19 09:12:01

a. Aluminum Plate Thickness Units: Gauge and Millimeter

1. What is Gauge?

Gauge is a unit that indicates the thickness of a material and is commonly used in North America.

The smaller the Gauge value, the thicker the material. For example, 16 Gauge is thicker than 22 Gauge.


2. What is a millimeter (mm)?

The millimeter is an internationally used unit of length, 1 millimeter = 0.001 meters.

Millimeters are commonly used in Europe, Asia and other places to express the thickness of aluminum plates.


3. Gauge and millimeter conversion

Conversion formula: thickness (mm) = 0.127 × (36 - Gauge value)

From Gauge to Millimeter

Comparison table:

Gauge  Inch  mm

1       .289 7.348

2       .258 6.543

*       .250 ( 1/4)         6.350

*       .234 ( 15/64)    5.953

3       .229 5.827

*       .219 ( 7/32)      5.556

4       .204 5.189

*       .203 (13/64)     5.154

*       .188 (3/16)       4.762

5       .182 4.621

*       .172 (11/64)     4.366

6       .162 4.115

*       .156 ( 5/32 )     3.969

7       .144 3.664

*       .141 ( 9/64 )     3.572

8       .128 3.263

*       .125 ( 1/8 )       3.175

9       .114 2.906

*       .109 ( 7/64 )     2.778

10     .102 2.588

*       .094 ( 3/32 )     2.381

11     .091 2.304

12     .081 2.052

*       .078 ( 5/64 )     1.984

13     .072 1.828

14     .064 1.628

*       .063 ( 1/16)      1.588

15     .057 1.449

16     .051 1.291

*       .047 ( 3/64 )     1.191

17     .045 1.149

18     .040 1.024

19     .036 .912

20     .032 .812

*       .031 ( 1/32 )     .795

21     .028 .723

22     .025 .644

23     .023 .573

24     .020 .511

25     .018 .455

26     .016 .405

*       .016 ( 1/64 )     .396

27     .014 .360

28     .013 .321

29     .011 .286

30     .010 .255

31     .0089        .226

32     .0080        .200

33     .0071        .180

34     .0063        .160

35     .0056        .142

36     .0050        .130

37     .0045        .114

38     .0040        .100


b. How to choose the thickness of aluminum plate?

1. Selection according to application scenarios

Construction:

Roof, wall: 1.5 mm - 3 mm (16 Gauge - 12 Gauge)

Decorative panels: 0.8 mm - 1.2 mm (20 Gauge - 18 Gauge)


Transportation:

Truck Floor: 2 mm - 3 mm (14 Gauge - 12 Gauge)

Trailer Wall Panel: 1.2 mm - 1.5 mm (18 Gauge - 16 Gauge)


Shipbuilding:

Hull Structure: 3 mm - 5 mm (12 Gauge - 8 Gauge)

Deck: 2 mm - 3 mm (14 Gauge - 12 Gauge)


Industrial Equipment:

Work platforms: 2 mm - 4 mm (14 Gauge - 10 Gauge)

Tanks: 3 mm - 6 mm (12 Gauge - 8 Gauge)


2. Select according to load requirements

Light Load: 0.8 mm - 1.2 mm (20 Gauge - 18 Gauge)

Medium Load: 1.5 mm - 2.5 mm (16 Gauge - 14 Gauge)

Heavy load: 3 mm - 6 mm (12 Gauge - 8 Gauge)


3. Selection according to budget

Economy: 0.8 mm - 1.2 mm (20 Gauge - 18 Gauge)

Standard: 1.5 mm - 2.5 mm (16 Gauge - 14 Gauge)

Premium: 3 mm - 6 mm (12 Gauge - 8 Gauge)


c. Frequently Asked Questions

1. Which is more commonly used, the Gauge or the millimeter?

Gauge is commonly used in North America, while millimeters are commonly used in Europe and Asia.


2. How do I quickly convert between Gauge and millimeters?

Use an online conversion tool or mobile app such as Metal Gauge Converter.


3. What do I need to keep in mind when choosing aluminum plate thickness?

Define the application scenario, load requirements and budget.


d. User Reviews

1. Toronto Construction - John

“Using 1.5 mm aluminum sheet for roofing, rust prevention is very good, recommended!”


2. Vancouver logistics company - Sarah

“2 mm aluminum sheet for truck floor, good load bearing capacity and cost effective.”


3. Calgary Shipyard - Mike

“3 mm aluminum plate for hull structure, superb corrosion resistance, customer is very satisfied.”


e.Contact us:

sales01@mingtai-al.com

www.aluminumsheetstrailers.com

+86 19337802645



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