Steel weights around 490 pounds per cubic foot. Per cubic inch, the metal weighs 0.2904 pounds. Steel weight formulae are only approximate and are based on theoretical nominal weights.
Per lineal foot, a 1-inch-square steel bar weighs around 3.40 pounds. 0.22 times the diameter squared equals the weight of a round steel bar in pounds per lineal inch. In pounds per lineal inch, the weight of a square bar is 0.28 times the length of one of its sides squared. If the bar is flat, use the formula 0.28 x width x thickness to compute its weight per lineal inch.
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