Sheet Metal Thickness (Gauge) Chart in Inches Gauge Mild Steel Aluminum Galvanized Steel Stainless Steel 3 0.2391 0.2294 0.2500 4 0.2242 0.2043 0.2344 5 0.2092 0.1819 0.2187 6 0.1943 0.1620 0.2031 7 0.1793 0.1443 0.1875 8 0.1644 0.1285 0.1680 0.1719 9 0.1495 0.1144 0.1532 0.1562 In the case of aluminum and its alloys, sheet is typically defined as a piece of metal that is less than 0.249 inches thick. Different gauge thickness applies to different metals. Tolerance Range. ASTM ANSI Mechanical Steel Sheet Mechanical Tolerances. The customary range gauge of a metal sheet is from a scale of 35 going down to 6. Decimal Equivalent. NOTES: - Tolerance ranges for gauges 10, 11 and 12 are for widths between 40" and 60". ASTM-AISI-Thickness-Tolerance-Ranges.pdfDownload .0236 plus .008 is considered to be 24 ga.0236 plus .004 is considered the nominal for 24 ga .0236 + .004 The tables in my texts and on the machine reference gauge. Weight. 5 .2092 Stainless. A sheet metal gauge tool is used to measure metal thickness, and show both the gauge number as well as the thickness of the metal in thousandths of an inch. I'm practicing up on my Mig and am trying to determine settings, using ER70-6S and C25. GAUGE TO THICKNESS CHART (Click here for a printable PDF chart) Gauge. CR . Modern Metal Thickness Measurements The common practice today is to specify the exact thickness of the product in question, thought the gauge may also be listed. Gage. Lbs/Ft 2. For instance, a sheet of 30-gauge standard steel measures 0.012 inches, which is slightly smaller than 30-gauge galvanized steel at 0.0157 inches and slightly larger than 30-gauge aluminum at 0.01 inches. - Tolerance ranges for all other gauges are for widths between 32" and 60". 9.375 . Mechanical Steel Sheet Mechanical Tolerances ... CR - COLD ROLLED Sheet Metal Gage (guage) size chart Carbon Steel Sheets. Sheet metal on the other hand is basically metal designed into thin quantities used for metalworking. The equivalent thicknesses differ for each gauge size standard, which were developed based on the weight of the sheet for a given material. Nevertheless, in some situations sheet metal’s thickness can vary significantly which is then called foil or leaf. As you can see on the sheet metal gauge chart below, the metal gauge thickness will vary significantly depending on the metal. H R . The most commonly used sheet metal sizes range from 30 gauge (thinner) to 7 gauge (thicker). 4 .2242 .2332.2152 . Sheet Metal Gauge Size Chart Gauge (or gage) sizes are numbers that indicate the thickness of a piece of sheet metal, with a higher number referring to a thinner sheet. What thickness or gauge is standard automotive sheetmetal on American vehicles, such as a door skin or fender skin. Thanks for any info. Thickness, Inches. 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