W12×50 vs W16×50
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W12×50 and W16×50 both weigh 50 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W16×50 is the deeper section at a nominal 16 in., versus 12 in.
W16×50 has the greater bending strength: section modulus Sx of 81 in³ versus 64.2, about 26% more.
| Property | W12×50 | W16×50 |
|---|---|---|
| Weight | 50 lb/ft | 50 lb/ft |
| Depth (d) | 12 1/4" | 16 1/4" |
| Flange width (bf) | 8 1/8" | 7 1/8" |
| Web thickness (tw) | 3/8" | 3/8" |
| Flange thickness (tf) | 5/8" | 5/8" |
| Area (A) | 14.6 in² | 14.7 in² |
| Moment of inertia (Ix) | 391 in⁴ | 659 in⁴ |
| Section modulus (Sx) | 64.2 in³ | 81 in³ |
| Plastic modulus (Zx) | 71.9 in³ | 92 in³ |
Open W12×50 in the interactive size chart →
Full detail: W12×50 · W16×50. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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