2022 Newest Sheet Metal Gauge Chart

Abstract

In the sheet metal fabrication industry, the term ‘gauge’ is used to specify the thickness or size of sheet metals. If you are unfamiliar with the sheet metal industry or gauge system, you would be confused by the phrase ‘18 gauge steel’. This blog will help you out! This blog will explicitly introduce the gauge system, and sheet metal gauge chart features.

Sheet Metal Gauge Charts

The sheet metal gauge(thickness) conversion chart varies for different metals. This article will introduce you the steel gauge thickness chart. Three commonly used metal gauge charts are listed below: Standard SteelGalvanized Steel, and Aluminum gauge charts.

Standard Steel Gauge Chart

GaugeInchesMMGaugeInchesMM
30.23916.07314200.03590.91186
40.22425.69468210.03290.83566
50.20925.31368220.02990.75946
60.19434.93522230.02690.68326
70.17934.55422240.02390.60706
80.16444.17576250.02090.53086
90.14953.7973260.01790.45466
100.13453.4163270.01640.41656
110.11963.03784280.01490.37846
120.10462.65684290.0350.3429
130.08972.27838300.0120.3048
140.07471.89738310.01050.2667
150.06731.70942320.00970.24638
160.05981.51892330.0090.2286
170.05381.36652340.00820.20828
180.04781.21412350.00750.1905
190.04181.06172360.00670.17018

Strandard steel gauge thickness chart

Galvanized Steel Gauge Chart

GaugeInchesMMGaugeInchesMM
3200.03961.00584
4210.03660.92964
5220.03360.85344
6230.03060.77724
7240.02760.7004
8250.02470.62738
90.15323.89128260.02170.55118
100.13823.51028270.02020.51308
110.12333.13182280.01870.47498
120.10842.75336290.01720.43688
130.09342.37236300.01570.39878
140.07851.9939310.01420.36068
150.0711.8034320.01340.34036
160.06351.612933
170.05751.460534
180.05161.3106435
190.04561.1582436

Galvanized steel gauge thickness chart

Aluminum Gauge Chart

GaugeInchesMMGaugeInchesMM
30.22945.82676200.0320.8128
40.20435.18922210.02850.7239
50.18194.62026220.02530.64262
60.1624.1148230.02260.57404
70.14433.66522240.02010.51054
80.12853.2639250.01790.45466
90.11442.90576260.01590.40386
100.10192.58826270.01420.36068
110.09072.30378280.01260.32004
120.08082.05232290.01130.28702
130.0721.8288300.010.254
140.06411.62814310.00890.22606
150.05711.45034320.0080.2032
160.05081.29032330.00710.18034
170.04531.15062340.00630.16002
180.04031.02362350.00560.14224
190.03590.9118636

Aluminum metal gauge chart

Click here to view and download sheet metal gauge chart pdf.

History of Sheet Metal Gauge

The word ‘gauge’ linguistically originated from the French word ‘jauge,’ meaning ‘capacity that a specific container must have.’ The name of the gauge suggests that it’s related to the steel, iron, and wire-drawing industries. This practice has been around for hundreds of years. Archaeological evidence indicates that it existed in the ancient past.

Traditional thickness measurements use gauges. British iron wire industry first used this word when there was no standard thickness measurement. The wire-drawing procedure and the properties of iron as a material determined the gauge number sizes. In the 19th century, the measurement and description of gauges were the fractions of an inch. One gauge was legalized and made to be the Standard Wire Gauge in the UK. The convenience of craftspeople was a crucial factor in the gauge’s standardization. With the birth of the International System of Units in the 20th century, the gauge was to be replaced.

How to Use Sheet Metal Gauge

The gauge number is inversely proportional to the thickness of the sheet metal. The smaller the gauge number is, the greater the thickness. The gauge numbers and the measured inches and millimeters are independent of different sheet metals. For example, gauge number 9 for standard steel and aluminum are 0.1495 in and 0.1144 in, respectively.

Gauges are employed to specify a sheet metal’s thickness. The values of gauges are not dependent on either the metric or the standard measuring systems. The actual thickness of sheet metal may be calculated in inches or millimeters using a gauge conversion chart. According to a gauge conversion chart, 10 gauge standard steel, for instance, equals 0.1345 inches or 3.4163 millimeters. The gauge number “10” has no bearing on the measures themselves.

Various gauge systems are in use now, with certain gauge designations being applied to particular metal kinds. For instance, under the same gauge system, 10 gauge standard steel has a thickness of 0.1345 inches while 10 gauge aluminum has a thickness of 0.1019 inches.

Final words

The three charts above give you the conversions from gauge to inches and millimeters for steel, galvanized steel, and aluminum. If you still need clarification about the gauge(thickness) conversion charts, or you inquire about any other sheet metal type, please feel free to contact us. You are more than welcome to have our professional technical support!

 

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