Steel Beam Sizes / AISC / S-Shapes / S18x54.7
S18x54.7 Steel Beam Dimensions and Properties
AISC American standard beams · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
S18x54.7 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 54.70 lb/ft | 81.40 kg/m |
| Depth, d | 18.00 in | 457.00 mm |
| Flange width, bf | 6.00 in | 152.00 mm |
| tw | 0.461 in | 11.700 mm |
| tf | 0.691 in | 17.600 mm |
| Area | 16.00 in² | 10,300.00 mm² |
| Ix | 801.00 in⁴ | 333,000,000 mm⁴ |
| Iy | 20.70 in⁴ | 8,620,000 mm⁴ |
| Sx | 89.00 in³ | 1,460,000 mm³ |
| Sy | 6.91 in³ | 113,000.00 mm³ |
| Zx | 104.00 in³ | 1,700,000 mm³ |
| Zy | 12.10 in³ | 198,000.00 mm³ |
| rx | 7.07 in | 180.00 mm |
| ry | 1.14 in | 29.00 mm |
| J | 2.33 in⁴ | 970,000.00 mm⁴ |
| Cw | 1,550.00 in⁶ | 416,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S18x54.7.
Source: AISC Shapes Database v16.0 · Methodology