W18×97 vs W18×106
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W18×106 is the heavier section at 106 lb per foot, versus 97 for W18×97 (9 lb/ft more).
Both are nominally 18 in. deep.
W18×106 has the greater bending strength: section modulus Sx of 204 in³ versus 188, about 9% more.
| Property | W18×97 | W18×106 |
|---|---|---|
| Weight | 97 lb/ft | 106 lb/ft |
| Depth (d) | 18 5/8" | 18 3/4" |
| Flange width (bf) | 11 1/8" | 11 1/4" |
| Web thickness (tw) | 9/16" | 9/16" |
| Flange thickness (tf) | 7/8" | 15/16" |
| Area (A) | 28.5 in² | 31.1 in² |
| Moment of inertia (Ix) | 1750 in⁴ | 1910 in⁴ |
| Section modulus (Sx) | 188 in³ | 204 in³ |
| Plastic modulus (Zx) | 211 in³ | 230 in³ |
Open W18×97 in the interactive size chart →
Full detail: W18×97 · W18×106. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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