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Sheet metal gauge thickness chart

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. Sheet Metal Gauge Thickness Chart ( to mm/inch Comversation) Gauge Number Standard Steel Galvanized Steel Stainless Steel Aluminum, Brass, Copper in mm in mm in mm in mm 3 0.2391 6.073 0.2294 5.827 4 0.2242 5.095 0.2344 5.954 0.2043 5.189 5 0.2092 5.314 0.2187 5.555 0.1819 4.6 Sheet metal thickness gauges for steel are based on a weight of 41.82 pounds per square foot per inch of thickness. This is known as the Manufacturers' Standard Gage for Sheet Steel. For other materials, such as aluminum and brass, the thicknesses will be different. Thus, a 10 gauge steel sheet which has a thickness of 0.1345 inches will weigh. A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. For example, 18 gauge steel, according to a gauge conversion chart, is 0.0478 inch or 1.214 millimeter. The gauge number 18 holds no relevance to the actual measurements Sheet Metal Gauge Thickness Chart When working with sheet metal, the term gauge is often used. Gague are used to specify the thickness of a metal sheet. Gague (Ga.) is a length measurement unit for diameters originating in North America and belongs to the Browne & Sharpe metering system

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Sheet Metal Gauge Chart Sheet metal thickness is denoted by gauge, sometimes spelled gage, which indicates a standard thickness before processing. Click here for a Gauge to mm Conversion Chart. Processing may include polishing, or the applying of protective plastics which will decrease or increase a sheet's thickness respectively Stainless steel: 26 gauge, 24 gauge, 20 gauge, 18 gauge, 16 gauge, 14 gauge, 1/8 and 1/4. Kynar Galvalume (Steel) for metal roofing and gutters: 24 gauge. Kynar Aluminum for metal roofing: 0.032 or 0.040. Aluminum for gutters: 0.027 or 0.032 for seamless gutters and any other thickness for custom gutters. Zinc: 0.7 mm, 0.8mm and 1.5 mm GAUGE TO THICKNESS CHART (Click here for a printable PDF chart) Gauge. Stainless. Galvanized. Sheet Steel. 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. The equivalent thicknesses differ for each gauge size standard, which were developed based on the weight of the sheet for a given material

Standard Sheet Metal Gauge Thickness Char

  1. Sheet Metal Gauge & Thickness Chart Keywords: Sheet Metal Gauge, Sheet Metal Thickness Created Date: 1/9/2010 4:37:01 PM.
  2. To get the gauge thickness of steel, you may refer to the thickness chart provided below. As an outcome, 12ga steel has a thickness of 0.1046 inches. The formula to figure out the weight of the material then uses the gauge multiplied by the value (41.82). Thus, 41.82 X 0.1046 = 4.37 lb/ft2 for 12ga material
  3. The following sheet metal gauge size reference chart gives the weight and thickness of sheet metal given as a gauge (sometimes spelled gage) and indicates the standard thickness of sheet metal and wire.For most materials, as the gauge number increases, the material thickness decreases
  4. The numbers of a steel gauge chart typically range between 3-30. Yet those numbers do not indicate a specific dimensional value. Standard gauge sizes were developed based on the weight of the sheet for a given material and the equivalent thicknesses differ for each gauge size
  5. Sheet Metal Gauge Thickness Chart. Within the world of laser cutting, metal thickness based on gauge is a vital consideration. It's something we use regularly at Cypress Metals, and something our clients should have access to as well. The table below is a simple resource that allows you to sort thickness by both inches and millimeters, for.
  6. Sheet Metal Gauge Tolerances Chart . Sheet Metal & Wire Gauge Sizes Data Chart Tolerances, Engineering Design & Limits & Fits. Sheet Metal Guage Tolerances. During the rolling process the rollers bow slightly, which results in the sheets being thinner on the edges
  7. um, steel, stainless steel, and galvanized steel sheet are presented here, with thicknesses ranging from 1/64 to 1/4 inch. Gauge numbers continue both to thicker and thinner sections, but these charts cover the most common ranges. The charts include fractional, decimal, and metric dimensions for reference

Sheet Metal Gauge Chart Metal Supermarkets - Steel

  1. Sheet Metal Gauge Chart [ Updated for 2021 ] This page is all about knowing the thickness of various materials based on a Gauge Number. If you know the thickness, you can use it to figure out other useful things such as weight. These thicknesses vary based on what the material is. In general, as the gauge number increases, the thickness decreases
  2. um
  3. The larger the number of GAUGE is, the smaller the diameter is. It is also used to indicate thickness after promotion. There is no conversion formula due to the difference between Ga. scale and inch. The comparison of different unit systems is shown in the table below. Sheet metal GAUGE thickness chart
  4. e if a specific material is right for your processes, equipment or end use. Please consult your in house engineers, plant.
  5. um and strip & tubing: For full table with Stainless Steel, Alu
  6. Manufacturers use sheet metal gauge charts, whereas designers use the material thickness in MM or Inches. So a sheet metal gauge chart basically shows the gauge to unit conversion data suitable for both manufacturers and designers. Sheet metal gauges are also called Gage
  7. um sheet measures 1.3 mm

Sheet Metal Gauge Thickness Chart (to mm/inch Conversions

  1. um Galvanized Steel Stainless Steel 3 0.239 0.229 0.250 4 0.224 0.204 0.234 5 0.209 0.182 0.219 6 0.194 0.162 0.203 7 0.179 0.144 0.188 8 0.164 0.129 0.168 0.172 9 0.150 0.114 0.153 0.156 10 0.135 0.102 0.138 0.141 11 0.120 0.091 0.123 0.125 12 0.105 0.081 0.108 0.109 13 0.090 0.072 0.093 0.094 14 0.075 0.064 0.079 0.07
  2. Sheet metal gauges differ g503 sheet metal sizes chart all the. Sheet Metal Gauge To Thickness Conversion Chart. Sheet Metal Material Thicknesses Meta Fab Inc. Coyote Steel Co Eugene Oregon. The Pitfalls Of Using Gauge To Pare Thickness Quality Edge. Sheet Metal Material Thicknesses Meta Fab Inc
  3. um, simply multiply the thickness of your mild steel by 1.5

Sheet Metal Gauge Chart - SheetMetal

Sheet Metal Gauge Chart. Plate, Sheet and Foil Metal Thickness Gauge Conversion Chart (Except Zinc - see zinc page) SWG. Inch. mm. SWG. Inch. mm. 7/0 For the purpose of securing uniformity the following is established as the only standard gauge for sheet and plate iron and steel in the United States of America, namely: Number of gauge. Approximate thickness in fractions of an inch. Approximate thickness in decimal parts of an inch. Approximate thickness in millimeters. Weight per square foot.

Gauge Thickness and Weight Chart for Sheet Metal Product

Keeping a gauge conversion chart nearby is an easy way to determine the actual thickness of a sheet of metal in inches or millimeters. For example, a 14 gauge stainless steel is .07812 inches thick. The gauge number 14 holds no relevance to the actual measurements The common aluminum sheet metal thickness on the market is usually in mm or inches. The usage of aluminum gauge thickness originated in North America. The larger the value, the smaller the actual millimeter or inch value. The following will list some commonly used guage values and the corresponding values in millimeters or inches An aluminum sheet metal thickness refers to the thickness of an Aluminium Sheets, a flat square (or rectangle) piece of aluminum material with a thickness of between 0.2mm and 500mm, a width of 200mm (some are even 50mm and above) and more, and a length of 16m or less.. General Information of Aluminum sheet thickness. The aluminum sheet metal thickness can be divided into four categories

GAUGE TO THICKNESS CHART - Stainless Suppl

What thickness or gauge is standard automotive sheetmetal on American vehicles, such as a door skin or fender skin. I'm practicing up on my Mig and am trying to determine settings, using ER70-6S and C25. The tables in my texts and on the machine reference gauge. Thanks for any info gage no. steel: stainless stl. alum. 7.179--8.164.172-9.150.156-10.135.141-11.120.125-12.105.109-13.090.094.093: 14.075.078.079: 15.067.070.071: 16.06 sheet metal thickness and british standard wire gauge, swg swg no inches mm 1 0.300 7.620 5 0.212 5.385 10 0.128 3.251 12 0.104 2.64 The weight of 29-gauge metal roofing may differ, though, depending on the type of metal that you choose. For instance, stainless steel will have a difference in inches than carbon steel. How do you measure sheet metal thickness? You can find the thickness of your sheet metal by using a measuring tape and a simple conversion technique Joined Apr 4, 2004. ·. 179 Posts. #4 · Aug 27, 2012. I too agree with the 18ga. Around .040, remember the panel may not be the exact thickness everywhere after stamping, check several spots. Just used some AMD stuff and it was all in the .040 or 18ga. area, pretty nice stuff too. Mike

How Do I Determine the Proper Tonnage for a Bend? | JMTUSA

Sheet Metal Gauge Size Chart - CustomPart

Standard Steel Gauge Thickness. Galvanized Steel Gauge Thickness. Stainless Steel Gauge Thickness. Aluminum Gauge Thickness. Zinc Gauge Thickness. Birmingham Gauge Thickness. Metro now has 24/7 after hours services to meet all your emergency needs. After Hours: (762) 887-0480. emergency@metroboilertube.com This is choosing the right thickness, or gauge, of sheet metal. It is very important that you are using the correct product to optimize efficiency and functionality. In order to measure the sheet metal, you will need a sheet metal gauge handy! You will need one for non-ferrous and ferrous because like I mentioned before, the thickness is.

Bend Radii & Minimum Bend Sizes. It is most economical to use a single bend radius throughout the design, but if necessary, you can utilize multiple radii. Use this document to choose values that are both manufacturable and meet your needs. If you need help choosing a value, contact us at info@protocase.com or 1-866-849-3911 and we can help Steel Gauge Thickness Chart Fractions. Written by Kupis on May 16, 2020 in Chart. 21 new gauge thickness chart ear gauge sizes work sheet metal thickness chart inches solved sheet metal sizes autodesk for manufacturing. Decimal Equivalent Chart And Gauge. Sheet Metal Gauges Differ G503 Military Vehicle Message Forums Sheet Metal Gauge Chart Supermarkets Steel Aluminum Stainless Hot Rolled Cold Alloy Carbon Galvanized Br Bronze Copper. Sheet Metal Gauge Thickness Chart For Ferrous And Nonferrous Metals. Metals materials specs s profab steel solutions why is sheet metal thickness measured in gauge and not inches wiley cold rolled steel gauge chart the future. Gauge and Weight Chart Sheet Steel Galvanized Steel Stainless Steel Aluminum Gauge. Created Date: 10/30/2014 1:42:23 PM.

Sheet metal thickness chart: 7, 10, 11, 12, 14, 16, 18, 20

In most of the world, sheet metal thickness is consistently specified in millimeters. In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge The gauge of sheet metal ranges from 35 gauge to about 6 gauge. Sheet metal thickness gauges for steel are based on a weight of 41.82 pounds per square foot per inch of thickness. This is known as the Manufacturers' Standard Gage for Sheet Steel. For other materials, such as aluminum and brass, the thicknesses will be different. Thus, a 10.

Standard Gauges of Sheet Metal Chart. Related Product (s)>>. The thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. Please note that ASTM states in specification ASTM A480-10a The use of gage number is discouraged as being an archaic term of limited usefulness not having general agreement on. Conversion Data Chart Standard Gauges Chart Gauge Tolerance Chart Useful Data Page. Cincinnati, OH Phone: 513-396-6600 Phone: 800-541-4430 Fax: 513-396-607 Gauge Decimal Equivalent Tolerance Range Lbs. per sq. ft. 7 8 0.168 .159 to .177 7.03

Sheet Metal Wire Gauge Sizes Data Chart Gage Sizes Table

Gauge. The gauge of a metal roof refers to its thickness, and the higher the gauge, the thinner the metal. For example, standard 29-gauge steel roofing made in long panels is about 0.36 millimeters thick, and the 26-gauge version is slightly thicker at 0.48 millimeters Sheet Metal Thickness Gauge Standards Yzing Metals. Corten Steel Plate Astm A588 In Stock. Mil Thickness Color Code Cheat Sheets Steeler Construction Supply. What gauge should i use working silver jewelry making tools supplies powder coating film thickness quality control for optimum results tiger coatings a better finish print world sheet. SS Plates Manufacturers In India - Ss Sheet Gauge in Mm, SS Plate Thickness in India And Weight Chart Metric, SS Plate Flatness Tolerance Chart, Stainless Plate Sizes Philippines/ Malaysia / Australia, SS Plate Gauge Chart, SS 304/304L Plates Sizes, SS Plate Mill Plate: Grades Thicknesses and Widths, SS Plate Specifications, SS Plate Tolerance The gauge, inside radius, die opening, and minimum flange length are all interconnected through different equations and relationships, the Air Bend Force Chart organizes these variables and points the way towards the ideal setup. The first column of the chart, Gauge, is the thickness of the sheet metal being bent

When working with wire or sheet metal gauge you may find the above chart helpful in converting the gauge size to inches or millimeters to determine the thickness/size. You will note that the smaller the gauge number, the larger/thicker the wire or sheet metal. Use the above chart for free (click on the photo to enlarge) or buy the digital. Our sheet metal screws are produced from premium 20-gauge standard steel sheet metal with a zinc coating for additional corrosion protection. As you can see on the metal thickness gauge chart, 20-gauge sheet metal has a thickness of 0.0359 inches, so our screws are durable through any application Sheet Metal Gauge to Thickness Conversion Chart Download Brochure Tel: 732.286.1800 • Toll Free: 800.526.4182 • Fax: 732.244.8843 • Toll Free Fax: 800.358.7904 • heycointernetsales@heyco.co

Sheet metal thickness is denoted by gauge, sometimes spelled gage, which indicates a standard thickness before processing. Processing may include polishing, or the applying of protective plastics which will decrease or increase a sheet's thickness respectively. As the gauge number increases the material's thickness decreases Metal Gauges. Below you'll find the info you need with our sheet steel, stainless steel and aluminum sheet metal charts. Use the chart below to convert standard gauge numbers in decimals of an inch for sheet steel, aluminum and stainless steel

Sheet Metal Wire Thickness Gauge Stainless steel | eBayAngles - Bar Sizes

Engineers may need a steel gauge chart to determine the required dimensions of the material to be machined, to understand the gauge system and familiar with the thickness for specific gauge such as 16 gauge thickness, here we'll explain what is sheet metal gauge (thickness), how does it work, and the sheet metal gauge chart for stainless steel, sheet steel, galvanized steel, aluminum, brass. Sheet metal gauge to mm - Gauge to Thickness Chart Download. Sheet metal is metal formed by an industrial process into thin, flat pieces. Sheet metal is one of the fundamental forms used in metalworking and it can be cut and bent into a variety of shapes Measures sheet metal thickness from 36-0 gauge. Measures wire gauge. Decimal equivalent shown on reverse side. Tempered for long life. This gauge should be on every welding cart. Helps perfectly set your welder for exact metal thickness. Handy gauge shows all sizes of sheet metal and wire from thin 36 gauge to thick O gauge

Gauge Stainless Galvanized Sheet Steel Aluminum Fraction inches (mm) inches (mm) inches (mm) inches (mm) 26 0.0178 (0.452) 0.0217 (0.55) 0.0179 (0.45) 0.0159 (.40 Gauge - This number, which typically ranges between 3-30, indicates the thickness of a metal sheet. While the actual numbers do not indicate a specific dimensional value, the higher the gauge number the lower the thickness. Download a gauge conversion chart for more information. Grinding and Polishing - Finishing operations that are applied. The charts below can be used to determine the equivalent thickness, in inches or millimeters, for a gauge number from the selected gauge size standard. The weight per unit area of the sheet can also be seen in pounds per square foot and kilograms per square meter. The strength per square inch or Tensile Strength is shown in KSI, PSI and Megapascal Sheet metal thickness gauges are manufactured to the United States Standard for uncoated sheet metal including plate iron and steel. These stamped steel gauges have cutouts ranging in size from #36 to #0 and are typically stamped on the opposite side with the decimal inch equivalent of the gauge size Figure 5. An Excel spreadsheet layout of a galvanized steel sheet metal gauge table. Figure 6. An Excel spreadsheet layout of an aluminum sheet metal gauge table. In Figures 4, 5 and 6, we can see the appropriate Excel layout for a sheet metal gauge tablet utilized by the SOLIDWORKS software

Creating a Sheet Metal Gauge Table. Tables are included in the SOLIDWORKS application, and are located in: install_dir\lang\language\Sheet Metal Gauge Tables. If you create a sheet metal gauge table, use a semi colon - ; - as a delimiter between values. With gauge tables, the radii and angles can differ. However, you must list the thickness and. Aluminum is a general-purpose alloy commonly used in extrusions, and is also available in sheet metal. However, it is not recommended for sheet metal work because it tends to crack on the outside radii once it passes its yield (and therefore requires a much larger radii to be able to bend properly). 6061 aluminum is also very easy to machine

Steel Gauge Chart - The Why and How - Ryerso

Sheet Metal Thickness is reported in gauge. Our Gauge Chart provides provides both fractional and decimal thickness of sheet as well as weight per sq ft A gauge chart to determine sheet metal thickness. It's Okay to Ask Wye - When to use which Y and why. Cutting Into Existing Duct Work Questio Sheet metal thickness gauges for steel are based on a weight of 41.82 pounds per square foot per inch of thickness. This is known as the Manufacturers' Standard Gauge for Sheet Steel. For galvanized material, the decimal by gauge and weight per pound is different than steel due to the coating weight Common Sheet Metal Gauge Chart. Here is another EZ to read chart that shows common sheet metal gauge to decimal equivalent. The chart is easy to read on a tablet or cell phone. Each material, Steel, Galvanized Steel, Stainless, and Aluminum have it's own gauge thickness. The best way to determine thickness is with a micrometer or dial caliper.

GAUGE TO THICKNESS CHART TABLA DE EQUIVALENCIA DE CALIBRE Y ESPESOR Stainless Galvanized Sheet Steel Aluminium Acero Inoxidable Galvanizado Lámina de Acero Aluminio Gauge Fraction in (mm) in (mm) in (mm) in (mm) Calibre Espesor / Thickness Fracción 30 0.0125 (0.33) 0.0157 (0.40) 0.0120 (0.30) 0.0100 (0.25 The sheet metal gauge chart, however, has gauges for different metals. Standard steel with 10 gauge has a thickness of 3.416 while aluminum, brass, and copper of similar gauge have a thickness of 2.88mm. Also, standard steel of 20 gauge has a thickness of 0.912 mm while the non-ferrous counterparts have a thickness of 0.813mm If you're having trouble picking out a thickness, take a look at our page on deciding on a material thickness. Keep in mind that some manufacturers, distributors, and end users get the gauge thickness wrong. They might use the wrong metal's gauge chart or pick an obsolete standard when labeling a sheet of material The Galvanized Sheet Gauge The Galvanized Sheet Gauge is an older system used primarily by the trades consuming non-structural galvanized steel and is a measure of the zinc coated sheet thickness. It was developed in the early days of galvanizing before sophisticated wipers were available and, consequently, zinc thicknesses were thicker than. Our Metal Stock. CF Steel; Hot Rolled Steel Bars; Alloy Steel Bars; Aluminum; Stainless Steel; Structural Steel; Steel Pipe and Tubing; Carbon Steel Sheet; Carbon Steel Plate; Brass and Bronze; Specialty Products; Useful Steel Data. Aluminum Properties; Gauge Chart; Metal Stock Color Codes; CLICK THE SIGN BELOW FOR PHOTOS. Business Hours.

Sheet Metal Gauge Thickness Chart Cypress Metal

Sheet metal gauges used in ductwork Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! - search is the most efficient way to navigate the Engineering ToolBox MATERIAL THICKNESS ASTM TYPE DUCT END TREATMENT Galvanized 26 - 18 gauge A-653 G60-G90 48, 60, 72* Paint Grip 24 - 18 gauge A-653 A60 60 PVS 24 - 18 gauge A-653 4 x 1, 4 x 4 60 Raw Both Ends Aluminum .032 - .050 B-316 3003 H-14 48 Stainless Steel 24 - 20 gauge A-240 304 or 316 4 Click the image below to download a reference chart. Chemical Analysis/Mechanical Properties. Hardness Conversion Numbers for Steel. ASTM/AISI Thickness Tolerance Ranges. Sheet Metal Thickness (Gauge) Chart. Metal Weights Per Cubic Foot. Length Conversion Calculator

Tubing - Rectangular

Sheet Metal Gauge Tolerances Chart Engineers Edge www

Sheet Metal Gauge Size Chart. Easy to read and understand table or chart to convert gauge sizes in sheet metal to metric millimetres and imperial inches. Also shows weight per square foot (ft2) and weight per square metre (m2). Gauge. Thickness inches Sheet Metal Gauges. The below table summarizes sheet metal gauge and tolerances. Monroe, nor any of its employees shall be held liable for any improper or incorrect use of the information described and/or contained herein and assumes no responsibility for anyone's use of the information. Standard sheet metal gauges. Gauge Flat oval is for positive pressure applications only. See Sheet Metal Connectors, Inc. recommended size and gauge chart below. MAJOR DIMENSION SPIRAL SEAM DUCT LONGITUDINAL SEAM GAUGES OF FITTINGS DUCT WIDTH GAUGE DUCT GAUGE To 24 24 20 20 26 to 36 22 20 20 38 to 48 22 18 18 50 to 60 20 18 18 62 to 70 20 16 1

The sheet metal thickness gauge for steel is based on a weight of 41.82 pounds per square foot per inch of thickness. This is called the steel plate manufacturer's standard gauge. Metal Gauge Thickness Conversion Chart. Below is a chart of sheet metal gauge to mm/inch, including standard steel, aluminum, and galvanized steel Joined: Nov 23, 2009. Location: Jackson,S.C. What's is the thickness of sheet metal on the Camaros, for instance floor pans , need a 4x5 patch in the floor pan. Or a fender or door a small patch in certain areas so we can try to keep it original as possible . Cold rolled or hot rolled

Determine your sheet metal gauge and use a chart, like my B&S Gauge Chart, to determine the size, in mms of your metal gauge. Add .5mm if the metal used is over 4mm wide. To figure out your own sizing (instead of using the chart) here's the formula: (A [inside diameter] + B [metal thickness])* pi . Pi is(3.14159265359+) Note: The gauge number selection is arbitrary; there is no equation that can translate gauge number into thickness. Title: Microsoft Word - Standard Sheet Metal Gauges.docx Author: Christopher Greimes Created Date: 6/28/2009 9:33:24 AM.

See a video thickness guide of 10 mil below. 16 MIL (.016 inches thick)26 gauge: The 16 mil is approximately 1.5 times thicker than the 10 MIL. It would take approximately 62.5 sheets of 16 MIL stacked on top of each other to make an inch. Also called 26 gauge, the 16 mil copper weighs approximately 12 ounces per square foot A full list of steel gauges and their thicknesses are listed in the How Many? A Dictionary of Units of Measurement by Russ Rowlett, which is hosted online by the UNC. The measurement used to describe the thickness of sheet metal is the gauge of the metal The following chart lists the approximate decimal equivalents for sheet metal gauges along with standard tolerances. Please note that industry standard permits deviations from nominal thicknesses. NOMINAL DECIMAL STANDARD VARIANCE FROM SHEET METAL GAUGE (APPROXIMATE INCHES) NOMINAL DECIMAL (+/- INCHES) 7 0.1793 0.0080 8 0.1644 0.0080 9 0.1495 0.0080 10 0.1345 0.0070 11 0.1196 0.0050 [

How to Use a Wire Gauge Tool - YouTube

The industry (sheet metal) uses a variety of charts to identify the range of thickness in steel metal buildings for base sheet steel, g90 zinc-coated (galvanized) sheet steel, and aluminum-zinc alloy- coated sheet steel and their corresponding gauges. Steel Buildings Gauge Terminology is Not Standar A few resource s are ava ilable for comparing how thickness relates to gauge in the sheet metal category, such as the gauge comparison from the Engineer's Edge. Looking at the decimal thickness enables more precise (and sometimes surprising) comparisons. For example, TruCedar siding is G60 galvanized steel with a thickness of .016 Sheet metal thickness tolerances for Austenitic, Ferritic and Martensitic Stainless steels. Thickness tolerance in mm (+ or -) for given width in mm. Thickness. 1000 mm wide sheet metal. 1250 mm wide sheet metal. 0.6 to 0.79. 0.05. 0.05. 0.8 to 0.99