S18X54.7 Dimensions & Weight
S18X54.7 is an AISC American Standard (S) beam with an actual depth of 18 in and a 6 in flange, weighing 54.7 lb per foot — commonly used for floor beams and roof framing. It is the lightest of the 2 S18 sizes listed here.
S18X54.7 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 18 in | 457.2 mm |
| Flange width (bf) | 6 in | 152.4 mm |
| Cross-section area (A) | 16.1 in² | 103.9 cm² |
| Weight | 54.7 lb/ft | 81.4 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does S18X54.7 weigh and cost?
S18X54.7 weighs 54.7 lb per foot. At an example material price of $0.92/lb that is about $50.32 per foot. Set your quantity, length, and price to total your own run:
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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Related sizes
Deeper reading: AISC Shape Database Guide · How to calculate steel weight