W21×57 vs W21×62
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W21×62 is the heavier section at 62 lb per foot, versus 57 for W21×57 (5 lb/ft more).
Both are nominally 21 in. deep.
W21×62 has the greater bending strength: section modulus Sx of 127 in³ versus 111, about 14% more.
| Property | W21×57 | W21×62 |
|---|---|---|
| Weight | 57 lb/ft | 62 lb/ft |
| Depth (d) | 21" | 21" |
| Flange width (bf) | 6 1/2" | 8 1/4" |
| Web thickness (tw) | 3/8" | 3/8" |
| Flange thickness (tf) | 5/8" | 5/8" |
| Area (A) | 16.7 in² | 18.3 in² |
| Moment of inertia (Ix) | 1170 in⁴ | 1330 in⁴ |
| Section modulus (Sx) | 111 in³ | 127 in³ |
| Plastic modulus (Zx) | 129 in³ | 144 in³ |
Open W21×57 in the interactive size chart →
Full detail: W21×57 · W21×62. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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