S3X7.5 Dimensions & Weight

S3X7.5 is an AISC American Standard (S) beam with an actual depth of 3 in and a 2.5 in flange, weighing 7.5 lb per foot — commonly used for lintels, trimmers, and light framing. It is the heaviest of the 2 S3 sizes listed here.

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S3X7.5 Dimensions

Property	Imperial	Metric
Depth (d)	3 in	76.2 mm
Flange width (bf)	2.51 in	63.7 mm
Cross-section area (A)	2.21 in²	14.3 cm²
Weight	7.5 lb/ft	11.2 kg/m

Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.

What does S3X7.5 weigh and cost?

S3X7.5 weighs 7.5 lb per foot. At an example material price of $0.92/lb that is about $6.90 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

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Total weight

150 lbs

Material cost

$138.00

Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.

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