10 gauge steel thickness calculator
In the Manufacturers Standard Gauge for steel, 10 gauge is 0.1345 in (3.416 mm). The gauge number counts down as the sheet gets thicker.
Where the neutral axis sits, as a fraction of thickness. 0.33 for tight bends, 0.5 for generous ones.
- Thickness in inches
- 0.134 50
- Weight of the sheet
- 53.636
- Weight per square metre
- 26.818 kg/m2
- Weight per square foot
- 2.4915 kg/ft2
- Minimum inside bend radius One thickness is a safe general rule for mild steel; check the alloy.
- 3.416
- Bend allowance
- 7.620
- Bend deduction
- 6.045
- Suggested V-die opening Eight times thickness is the usual air-bending starting point.
- 27.33
Show the working
- Sheet length = 2000
- Sheet width = 1000
- Steel density = 7850
- Bend angle = 90
- K-factor = 0.42
- Thickness = 3.4163 = 3.4163
- Thickness in inches = 3.4163 / 25.4 = 0.1345
- area_m2 = 2000 * 1000 / 1e6 = 2
- volume_m3 = 2 * 3.4163 / 1000 = 0.006 832 6
- Weight of the sheet = 0.006 832 6 * 7850 = 53.6359
- Weight per square metre = 3.4163 / 1000 * 7850 = 26.818
- Weight per square foot = 26.818 * 0.09290304 = 2.491 47
- Minimum inside bend radius = 3.4163 * 1 = 3.4163
- Bend allowance = rad(90) * (3.4163 + 0.42 * 3.4163) = 7.620 16
- Bend deduction = 2 * (3.4163 + 3.4163) * tan(rad(90)/2) - 7.620 16 = 6.045 04
- Suggested V-die opening = 3.4163 * 8 = 27.3304
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- weight = length x width x thickness x density
- bend allowance = angle in radians x (inside radius + K x thickness)
- bend deduction = 2 x (inside radius + thickness) x tan(angle/2) - bend allowance
Gauge numbers are not a single standard. Steel, aluminium, stainless and zinc all use different gauge tables for the same number, so always state the material.
The Manufacturers Standard Gauge descends from a weight-per-square-foot table, which is why the thicknesses are not a neat progression.
Frequently asked
How thick is 10 gauge steel?
0.1345 inches, or 3.416 mm, for uncoated sheet steel.
Is a higher gauge number thicker?
No. The gauge number counts down as thickness goes up, so 16 gauge is thicker than 20 gauge.
Where the numbers come from
- Thicknesses are the Manufacturers Standard Gauge for uncoated hot- and cold-rolled sheet steel.