W18X46 Dimensions & Weight
W18X46 is an AISC wide-flange (W) shape with an actual depth of 18.06 in and a 6.06 in wide flange, weighing 46 lb per foot — a workhorse size for floor beams and roof framing on commercial jobs.
W18X46 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 18.06 in | 458.7 mm |
| Flange width (bf) | 6.06 in | 153.9 mm |
| Cross-section area (A) | 13.5 in² | 87.1 cm² |
| Weight | 46 lb/ft | 68.5 kg/m |
What does W18X46 cost?
At an example material price of $0.92/lb, W18X46 runs about $42.32 per foot, or roughly $846 for a 20-ft length.
Example pricing only. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Counting W18X46s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.
Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight