20Ga Sheet Metal Thickness - Web the following sheet metal gauge size reference chart gives the weight and thickness of sheet metal given as a. 0.025, 0.032, 0.040, 0.050, 0.063, 0.080, 1/8 (0.125) and 1/4 (0.25). Web 38 rows thickness weight per area; Web gauge 20 has a thickness of 0.0359 in or 0.912 mm and a weight per area of 1.465 lb/ft² or 7.151 kg/m². Gauge in mm lb/ft² kg/m²; Cold and hot rolled steel:
0.025, 0.032, 0.040, 0.050, 0.063, 0.080, 1/8 (0.125) and 1/4 (0.25). Gauge in mm lb/ft² kg/m²; Web 38 rows thickness weight per area; Cold and hot rolled steel: Web the following sheet metal gauge size reference chart gives the weight and thickness of sheet metal given as a. Web gauge 20 has a thickness of 0.0359 in or 0.912 mm and a weight per area of 1.465 lb/ft² or 7.151 kg/m².