Gauge chart
7 gauge steel thickness
7 gauge steel is 0.1793 inches thick, which is 4.55 mm. One square foot weighs 7.32 pounds.
7 gauge in figures
Inches 0.1793in
Millimetres 4.55mm
Weight 7.32lb/ft²
4×8 sheet 234lb
Close to 11/64 inch (0.1719). In practice, a shade over three sixteenths of an inch.
| Material | Inches | mm | lb/ft² | Standard |
|---|---|---|---|---|
| Steel | 0.1793 | 4.55 | 7.32 | Manufacturers' Standard Gauge (MSG) |
| Stainless | 0.1875 | 4.76 | 7.80 | Manufacturers' standard for stainless sheet |
| Aluminium | 0.1443 | 3.67 | 2.03 | Brown & Sharpe (AWG) |
What 7 gauge steel is used for
Near-plate work: heavy machine bases, press frames, ballistic and wear plate, and structural gussets.
Common questions
How thick is 7 gauge steel?
- 7 gauge steel is 0.1793 inches thick, which is 4.55 mm. One square foot weighs 7.32 pounds. For reference that is a shade over three sixteenths of an inch. Thicknesses are nominal and mill tolerance applies, so measure the sheet for anything structural.
What is 7 gauge steel in mm?
- 4.55 mm. The conversion is exact: 0.1793 inches times 25.4 gives 4.554 mm, rounded to 4.55.
Is 7 gauge stainless the same thickness as 7 gauge steel?
- No. 7 gauge stainless is 0.1875 inches, aluminium is 0.1443 inches, against 0.1793 inches for uncoated steel. Each material is tabulated under a different standard, so the gauge number alone does not give a thickness.
What does a 4x8 sheet of 7 gauge steel weigh?
- About 234 pounds. A 4 foot by 8 foot sheet is 32 square feet and 7 gauge weighs 7.32 pounds per square foot, so 32 times 7.32 is 234.3 pounds.