How thick should metal post be?
The two most common thicknesses are 0.065 (15 Gauge) and 0.095 (CS-20); the greater the number the thicker the steel.
T-Post - 0.85#x4' - Steel Raw - use 17 posts per roll of Wire Backed Silt Fence
T-Post - 0.85#x5' - Steel Raw - use 10 posts per roll of Safety Fence
T-Post - 0.85#x6' - Steel Raw