W40×331 vs W40×362
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W40×362 is the heavier section at 362 lb per foot, versus 331 for W40×331 (31 lb/ft more).
Both are nominally 40 in. deep.
W40×362 has the greater bending strength: section modulus Sx of 1420 in³ versus 1210, about 17% more.
| Property | W40×331 | W40×362 |
|---|---|---|
| Weight | 331 lb/ft | 362 lb/ft |
| Depth (d) | 40 3/4" | 40 1/2" |
| Flange width (bf) | 12 1/8" | 16" |
| Web thickness (tw) | 1 1/4" | 1 1/8" |
| Flange thickness (tf) | 2 1/8" | 2" |
| Area (A) | 97.7 in² | 106 in² |
| Moment of inertia (Ix) | 24700 in⁴ | 28900 in⁴ |
| Section modulus (Sx) | 1210 in³ | 1420 in³ |
| Plastic modulus (Zx) | 1430 in³ | 1640 in³ |
Open W40×331 in the interactive size chart →
Full detail: W40×331 · W40×362. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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