Sheet Metal Gauge Chart Guide And How to Customize Your Own Metal Part Online
Sheet metal fabrication is essential across various industries, serving as the backbone for creating machinery components and architectural structures. Understanding sheet metal gauge charts is crucial for both professionals and DIY enthusiasts.
In this guide, we'll understand sheet metal gauge charts, discover their complexities, and highlight their importance.
What is a Sheet Metal Gauge?
A sheet metal gauge measures the thickness of metal sheets. Contrary to intuitive logic, a higher gauge number corresponds to thinner metal, while a lower gauge number indicates thicker metal. For instance, 18-gauge steel is thicker than 20-gauge steel.
How are Sheet Metal Gauges Used?
How to Read a Sheet Metal Gauges Chart?
The chart below correlates the decimal equivalent thickness of each substance to the corresponding gauge measurement in both imperial and metric units. It's crucial to note that the thickness decreases as the gauge number increases. To use a sheet metal gauge chart effectively, choose the appropriate chart for the material in question, locate the row representing the desired thickness, and determine the corresponding gauge from the left column.
Sheet Metal Gauge Chart
Mild Steel Gauge Chart |
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| Gauge Number |
Inches | MM |
| 7 | 0.1793 | 4.554 |
| 8 | 0.1644 | 4.175 |
| 9 | 0.1495 | 3.797 |
| 10 | 0.1345 | 3.416 |
| 11 | 0.1196 | 3.038 |
| 12 | 0.1046 | 2.656 |
| 14 | 0.0747 | 1.897 |
| 16 | 0.0598 | 1.518 |
| 18 | 0.0478 | 1.214 |
| 20 | 0.0359 | 0.911 |
| 22 | 0.0299 | 0.759 |
| 24 | 0.0239 | 0.607 |
| 26 | 0.0179 | 0.454 |
| 28 | 0.0149 | 0.378 |
Aluminum Gauge Chart/Table |
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| Gauge Number |
Inches | MM |
| 7 | 0.1443 | 3.665 |
| 8 | 0.1285 | 3.264 |
| 9 | 0.1144 | 2.906 |
| 10 | 0.1019 | 2.588 |
| 11 | 0.09074 | 2.305 |
| 12 | 0.08081 | 2.053 |
| 14 | 0.06408 | 1.628 |
| 16 | 0.05082 | 1.291 |
| 18 | 0.04030 | 1.024 |
| 20 | 0.03196 | 0.812 |
| 22 | 0.02535 | 0.644 |
| 24 | 0.02010 | 0.511 |
| 26 | 0.01594 | 0.405 |
| 28 | 0.01264 | 0.321 |
| 30 | 0.01003 | 0.255 |
Galvanized Steel Chart
Galvanized Sheet Metal Gauge Chart |
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| Gauge Number |
Inches | MM |
| 8 | 0.1681 | 4.27 |
| 10 | 0.1382 | 3.51 |
| 12 | 0.1084 | 2.753 |
| 14 | 0.0785 | 1.994 |
| 16 | 0.0635 | 1.613 |
| 18 | 0.0516 | 1.311 |
| 20 | 0.0396 | 1.006 |
| 22 | 0.0336 | 0.853 |
| 24 | 0.0276 | 0.701 |
Carbon Steel Gauge
Carbon Steel Gauge Chart |
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| Gauge Number |
Inches | MM |
| 8 | 0.1644 | 4.175 |
| 10 | 0.1345 | 3.416 |
| 12 | 0.1046 | 2.656 |
| 14 | 0.0747 | 1.897 |
| 16 | 0.0598 | 1.518 |
| 18 | 0.0478 | 1.214 |
| 20 | 0.0359 | 0.911 |
| 22 | 0.0299 | 0.759 |
| 24 | 0.0239 | 0.607 |
Brass Gauge Chart
Brass Sheet Gauge Chart |
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| Gauge Number |
Inches | MM |
| 7 | 0.1443 | 3.665 |
| 8 | 0.1285 | 3.264 |
| 9 | 0.1144 | 2.906 |
| 10 | 0.1019 | 2.588 |
| 11 | 0.09074 | 2.305 |
| 12 | 0.08081 | 2.053 |
| 14 | 0.06408 | 1.628 |
| 16 | 0.05082 | 1.291 |
| 18 | 0.04030 | 1.024 |
| 20 | 0.03196 | 0.812 |
| 22 | 0.02535 | 0.644 |
| 24 | 0.02010 | 0.511 |
| 26 | 0.01594 | 0.405 |
| 28 | 0.01264 | 0.321 |
| 30 | 0.01003 | 0.255 |
Copper Gauge Chart
Copper Sheet Gauge Chart |
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| Gauge Number |
Inches | MM |
| 7 | 0.180 | 4.572 |
| 8 | 0.165 | 4.191 |
| 9 | 0.148 | 3.759 |
| 10 | 0.134 | 3.404 |
| 11 | 0.120 | 3.048 |
| 12 | 0.109 | 2.769 |
| 14 | 0.083 | 2.108 |
| 16 | 0.065 | 1.651 |
| 18 | 0.049 | 1.245 |
| 20 | 0.035 | 0.889 |
| 22 | 0.028 | 0.711 |
| 24 | 0.022 | 0.559 |
| 26 | 0.018 | 0.457 |
| 28 | 0.014 | 0.356 |
| 30 | 0.012 | 0.305 |
How to Choose the Right Gauge Sheet Metal for Your Fabrication Project?
Selecting the right gauge sheet metal hinges on various factors, including structural requirements, budget constraints, and aesthetic preferences. Consider the following aspects when making your decision:
Functional Requirements: Assess the mechanical, thermal, and corrosion-resistant properties required for your application.
Budget Constraints: Balance material costs with project specifications to optimize cost-effectiveness.
Aesthetic Considerations: Evaluate the desired finish, texture, and appearance to enhance the visual appeal of your project.
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FAQs
Which is thicker, 18 or 20-gauge sheet metal?
In sheet metal gauge tables, 18 gauge sheet metal is thicker than 20 gauge sheet metal.
How accurate are sheet metal gauge measurements?
Sheet metal gauge measurements provide a reliable indication of thickness, but variations may occur due to manufacturing tolerances.
What is the significance of the gauge number in sheet metal?
In the mild sheet metal thickness chart, the gauge number denotes the thickness of the metal sheet, with lower gauge numbers indicating thicker material.
How do I convert between gauge and thickness in inches or millimeters?
Refer to a steel sheet metal gauge chart for precise conversions between gauge numbers and thickness measurements in inches or millimeters.
How can metal gauge impact your DIY project?
Choosing the appropriate metal gauge ensures structural integrity, functional performance, and aesthetic satisfaction in your DIY endeavors.
