Views: 6 Author: Site Editor Publish Time: 2025-08-21 Origin: Site
Gauge sizes are numbers that indicate the thickness of a piece of steel sheet metal.
7 Ga Steel Thickness In Inches is 0.1793, just slightly less than 3/16 inches.
7 Ga Steel Thickness In millimeter is 4.554 mm.
To calculate a 7 gauge steel sheet weight, we use the standard thickness of 0.1793 inches and the density of steel (490 lb/ft³ or 7,850 kg/m³). The weight depends on the sheet dimensions, but here's how to compute it for any size:
Step-by-Step Calculation
Thickness of 7 ga steel: 0.1793 inches (US Standard Gauge for Steel).
Density of steel: 490 lb/ft³ or 7,850 kg/m³
Per square foot weight = 0.01494ft × 490 lb/ft³ = 7.32 lb/ft²
Per square meter weight = 0.004554m × 7,850 kg/m³ = 35.75 kg/m²
Below is a complete technical summary of the thickness and weight specifications for 7 gauge steel sheet, based on the U.S. Standard Gauge for sheet steel:
Thickness
Measurement Type | Value |
Exact Thickness | 0.1793 inches |
Millimeters | 4.554 mm (0.1793" × 25.4) |
Weight Calculations
Weight = Thickness × Area × Density
Steel Density:
Carbon Steel: 490 lb/ft³ (7,850 kg/m³)
Stainless Steel: 492 lb/ft³ (7,890 kg/m³)
Weight per Unit Area:
Unit | Carbon Steel Weight |
Per sq. foot | 7.32 lb/ft² |
Per sq. meter | 35.75 kg/m² |
Common Sheet Sizes:
Sheet Size (ft) | Area (ft²) | Weight (lb) | Weight (kg) |
4 × 8 steel sheet | 32 | 234.2 lb | 106.3 kg |
4 × 10 steel sheet | 40 | 292.8 lb | 132.8 kg |
5 × 10 steel sheet | 50 | 366.0 lb | 166.0 kg |
6 × 12 steel sheet | 72 | 527.0 lb | 239.1 kg |
Thickness and Structures
The core distinction lies in material thickness, governed by the U.S. Standard Gauge system. A 10 gauge steel sheet measures 0.1345 inches, while 7 gauge material is substantially thicker at 0.1793 inches. 7 gauge steel enhances approximately 50% greater resistance to deformation under point loads and bending stress compared to 10 gauge steel.
Weight
A square foot of carbon steel weighs 5.49 lb at 10 gauge versus 7.32 lb at 7 gauge. Scale this to a standard 4' x 10' sheet, and the 7-gauge variant adds 73 lb (33 kg) per unit.
Corrosive and High-Stress
A 7 gauge 316L stainless steel tank liner in a chemical processing plant withstands chloride-induced pitting corrosion far longer than its 10 gauge steel counterpart due to greater material reserves before critical thickness is compromised.
Cost Benefits
While 7 gauge steel carries a 30–40% material premium over 10 gauge, its extended service life in corrosive/abrasive settings often delivers lower lifecycle costs.
Note: The larger the value of Gauge, the thinner the sheet.
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