18 gauge steel is typically 0.0478 inches thick.
18 gauge is thicker than 20 gauge. 18 gauge is 1.27 mm thick while 20 gauge is .953 mm thick.
18 gauge stainless steel is 0.0500 inches thick.
No. The larger the number, the thinner the steel. 16 gauge is the thicker of the two.
The difference between 18 gauge and 22 gauge stainless steel is the thickness. The 18 gauge is 0.050" thick, and the 22 gauge is 0.031" thick. A link is provided below to an article with a list of the conversions. You'll note that the cited thickness for the gauges of stainless do not apply to galvanized steel, aluminum, zinc, brass or other metals.
11 gauge steel is 0.125 inches thick.
19 gauge steel is 1.11 mm thick and 20 gauge is .953 mm thick.
.0500 inches or 1.27 mm
STANDARD STEEL .9119 MM. GALV.STEEL 1.0058
18 to 20 gauge high strength steel on modern cars and 16 gauge on older cars.
They are close but not the same. For example, 14 gauge steel is .0781 inches thick while 14 gauge steel wire is .083 inches thick.
26-gauge steel is 0.0179" thick.