W21X50 Dimensions & Weight
W21X50 is an AISC wide-flange (W) shape with an actual depth of 20.83 in and a 6.53 in wide flange, weighing 50 lb per foot — a size you will see on longer floor spans and transfer framing.
W21X50 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 20.83 in | 529.1 mm |
| Flange width (bf) | 6.53 in | 165.9 mm |
| Cross-section area (A) | 14.7 in² | 94.8 cm² |
| Weight | 50 lb/ft | 74.4 kg/m |
What does W21X50 cost?
At an example material price of $0.92/lb, W21X50 runs about $46.00 per foot, or roughly $920 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 W21X50s 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