W21×62 vs W24×62
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W21×62 and W24×62 both weigh 62 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W24×62 is the deeper section at a nominal 24 in., versus 21 in.
W24×62 has the greater bending strength: section modulus Sx of 131 in³ versus 127, about 3% more.
| Property | W21×62 | W24×62 |
|---|---|---|
| Weight | 62 lb/ft | 62 lb/ft |
| Depth (d) | 21" | 23 3/4" |
| Flange width (bf) | 8 1/4" | 7" |
| Web thickness (tw) | 3/8" | 7/16" |
| Flange thickness (tf) | 5/8" | 9/16" |
| Area (A) | 18.3 in² | 18.2 in² |
| Moment of inertia (Ix) | 1330 in⁴ | 1550 in⁴ |
| Section modulus (Sx) | 127 in³ | 131 in³ |
| Plastic modulus (Zx) | 144 in³ | 153 in³ |
Open W21×62 in the interactive size chart →
Full detail: W21×62 · W24×62. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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