W12×30 vs W12×35
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W12×35 is the heavier section at 35 lb per foot, versus 30 for W12×30 (5 lb/ft more).
Both are nominally 12 in. deep.
W12×35 has the greater bending strength: section modulus Sx of 45.6 in³ versus 38.6, about 18% more.
| Property | W12×30 | W12×35 |
|---|---|---|
| Weight | 30 lb/ft | 35 lb/ft |
| Depth (d) | 12 3/8" | 12 1/2" |
| Flange width (bf) | 6 1/2" | 6 1/2" |
| Web thickness (tw) | 1/4" | 5/16" |
| Flange thickness (tf) | 7/16" | 1/2" |
| Area (A) | 8.79 in² | 10.3 in² |
| Moment of inertia (Ix) | 238 in⁴ | 285 in⁴ |
| Section modulus (Sx) | 38.6 in³ | 45.6 in³ |
| Plastic modulus (Zx) | 43.1 in³ | 51.2 in³ |
Open W12×30 in the interactive size chart →
Full detail: W12×30 · W12×35. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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