# What gauge is 1/4 steel plate?

Number of gauge | Approximate thickness in fractions of an inch | Weight per square meter in kilograms |
---|---|---|

0 | 5/16 | 61.03 |

1 | 9/32 | 54.93 |

2 | 17/64 | 51.88 |

3 | 1/4 | 48.82 |

Consequently, how do I know what gauge my metal is?

**How to Measure Sheet Metal Gauge Thickness**

- Use a tape measure to find the thickness of your sheet metal piece.
- Multiply the number of millimeters by 0.03937 to convert to inches.
- Compare the thickness of your sheet metal in inches to a sheet metal gauge chart to find the proper gauge of that particular piece.

Subsequently, question is, what gauge is standard ductwork? The thinnest acceptable sheet metal for **ductwork** used in a single dwelling is 28 **gage** or 0.013 and 0.018 inches for galvanized and aluminum, respectively. This measurement is for around **duct** smaller than 12 inches in diameter and a rectangular section no bigger than 8 inches.

Similarly, what is gauge thickness?

A sheet metal **gauge** (sometimes spelled "gage") indicates the standard **thickness** of sheet metal for a specific material. As the **gauge** number increases, the material **thickness** decreases. Sheet metal **thickness gauges** for steel are based on a weight of 41.82 pounds per square foot per inch of **thickness**.

What is 20 gauge in mm thickness?

Metal Thickness conversion chart

Conventional Gauge | Inches | Metric |
---|---|---|

24 | .020 -.026" | 0.5 - 0.6 mm |

22 | .027 - .032" | 0.7 - 0.8 mm |

20 | .033 - .037" | 0.8 - 0.9 mm |

19 | .038 - .042" | 0.9 - 1.1 mm |