The need frequently arises in our shops to calculation the weight of steel, whether as a part of quoting, come estimate exactly how much steel may be needed given a specific length that part, or to decide how hefty the bar is the we room loading into the equipments for safety and security purposes. Counting bars in a bundle and multiplying by load per bar enables a rapid “reality check” on whether or not the tag weight is correct, or exactly how much load is left in the rack.

You are watching: Weight of steel per cubic inch

Steel weighs 0.2833 lb per cubic inch. To get the weight of a steel bar, we have to calculate its volume in cubic inches.


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To calculation the volume, we require to first calculate the area in square customs of the section, climate multiply through its length.

Square or flat Bar

To find the area of a square or level bar, main point the width by the thickness. Then multiply that by the length (in inches) to calculate the volume, climate multiply the volume by 0.2833 lb per cubic inch.


Example: 1-inch square stole bar 12 feet (144 inches) long.1 customs × 1 inch × 144 customs = 144 cubic inches ; times 0.2833 pounds every cubic customs = 40.97 pounds

Example: ½ customs × 2 inch flat 10 feet (120 inches) long.½ inch × 2 inch × 120 inches = 120 cubic inches; time 0.2833 lb per cubic customs = 33.99 pounds


Round Bar

To discover the area of a round bar, square the diameter and multiply by 0.7854. Multiply this by the size to calculation the volume.

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Example: 1-inch ring by 12 feet long steel bar.1 inch × 1 inch × 0.7854 = 0.7854 square inches × 144 inches = 113.09 cubic inches; × 0.2833 pound per cubic customs = 32.04 pounds every bar


Weight the bars left in a bundle: If there room 75, 1-inch round 12 feet lengthy bars left in a bundle, the weight of the continuing to be steel is 75 bars time 32.04 pounds every bar = 2,403 pounds

Example: ¾-inch ring by 4 feet (48 inches) lengthy steel bar.0.750 inch × 0.750 inch × 0.7854 × 48 inches = 21.21 cubic inches; × 0.2833 lb per cubic customs = 6.00 pounds


Hex Bar

To uncover the area of a hex, an initial square the flat-to-flat distance, then multiply the by 0.866. Then multiply by size in inch to gain the volume. Then multiply by 0.2833 pounds every cubic customs to get the pounds.

Example: 1-inch hex stole bar, 12 feet (144 inches) long.1 customs × 1 customs × 0.866 × 144 inch × 0.2833 pound per cubic customs = 35.33 pounds


Example 1.5-inch hex bar 3-inch long empty for chucker.1.5 customs × 1.5 inch × 0.866 × 3 inch × 0.2833 pounds every cubic customs = 1.93 pounds per 3-inch blank