W21X73 Dimensions & Weight
W21X73 is an AISC wide-flange (W) shape with an actual depth of 21.24 in and a 8.3 in wide flange, weighing 73 lb per foot — a size you will see on longer floor spans and transfer framing.
W21X73 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 21.24 in | 539.5 mm |
| Flange width (bf) | 8.3 in | 210.7 mm |
| Cross-section area (A) | 21.5 in² | 138.7 cm² |
| Weight | 73 lb/ft | 108.6 kg/m |
What does W21X73 cost?
At an example material price of $0.92/lb, W21X73 runs about $67.16 per foot, or roughly $1,343 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 W21X73s 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