W12×58 vs W12×65
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W12×65 is the heavier section at 65 lb per foot, versus 58 for W12×58 (7 lb/ft more).
Both are nominally 12 in. deep.
W12×65 has the greater bending strength: section modulus Sx of 87.9 in³ versus 78, about 13% more.
| Property | W12×58 | W12×65 |
|---|---|---|
| Weight | 58 lb/ft | 65 lb/ft |
| Depth (d) | 12 1/4" | 12 1/8" |
| Flange width (bf) | 10" | 12" |
| Web thickness (tw) | 3/8" | 3/8" |
| Flange thickness (tf) | 5/8" | 5/8" |
| Area (A) | 17 in² | 19.1 in² |
| Moment of inertia (Ix) | 475 in⁴ | 533 in⁴ |
| Section modulus (Sx) | 78 in³ | 87.9 in³ |
| Plastic modulus (Zx) | 86.4 in³ | 96.8 in³ |
Open W12×58 in the interactive size chart →
Full detail: W12×58 · W12×65. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
Browse more: size comparisons · Steel Beam Size Chart