Steel Beam Sizes / CISC / M-Shapes / M318×17.3
M318×17.3 Dimensions, Weight and Section Properties
CISC Miscellaneous beams · v12.1
M318×17.3: 317 mm depth, 89 mm flange width, 17.3 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
M318×17.3 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 | 11.60 lb/ft | 17.30 kg/m |
| Depth, d | 12.48 in | 317.00 mm |
| Flange width, bf | 3.50 in | 89.00 mm |
| tw | 0.154 in | 3.900 mm |
| tf | 0.213 in | 5.400 mm |
| Area | 3.39 in² | 2,190.00 mm² |
| Ix | 80.24 in⁴ | 33,400,000 mm⁴ |
| Iy | 1.53 in⁴ | 636,000.00 mm⁴ |
| Sx | 12.88 in³ | 211,000.00 mm³ |
| Sy | 0.87 in³ | 14,300.00 mm³ |
| Zx | 15.01 in³ | 246,000.00 mm³ |
| Zy | 1.38 in³ | 22,600.00 mm³ |
| rx | 4.88 in | 124.00 mm |
| ry | 0.67 in | 17.10 mm |
| J | 0.04 in⁴ | 17,200.00 mm⁴ |
| Cw | 57.35 in⁶ | 15,400,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus M318×17.3.
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology