W10×30 vs W12×30
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W10×30 and W12×30 both weigh 30 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W12×30 is the deeper section at a nominal 12 in., versus 10 in.
W12×30 has the greater bending strength: section modulus Sx of 38.6 in³ versus 32.4, about 19% more.
| Property | W10×30 | W12×30 |
|---|---|---|
| Weight | 30 lb/ft | 30 lb/ft |
| Depth (d) | 10 1/2" | 12 3/8" |
| Flange width (bf) | 5 3/4" | 6 1/2" |
| Web thickness (tw) | 5/16" | 1/4" |
| Flange thickness (tf) | 1/2" | 7/16" |
| Area (A) | 8.84 in² | 8.79 in² |
| Moment of inertia (Ix) | 170 in⁴ | 238 in⁴ |
| Section modulus (Sx) | 32.4 in³ | 38.6 in³ |
| Plastic modulus (Zx) | 36.6 in³ | 43.1 in³ |
Open W10×30 in the interactive size chart →
Full detail: W10×30 · W12×30. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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