Steel Beam Sizes / AISC / M-Shapes / M12x11.8
M12x11.8 Dimensions, Weight and Section Properties
AISC Miscellaneous beams · v16.0
M12x11.8: 12 in depth, 3.07 in flange width, 11.8 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
M12x11.8 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 | 11.80 lb/ft | 17.60 kg/m |
| Depth, d | 12.00 in | 305.00 mm |
| Flange width, bf | 3.07 in | 78.00 mm |
| tw | 0.177 in | 4.500 mm |
| tf | 0.225 in | 5.720 mm |
| Area | 3.47 in² | 2,240.00 mm² |
| Ix | 72.20 in⁴ | 30,100,000 mm⁴ |
| Iy | 1.09 in⁴ | 454,000.00 mm⁴ |
| Sx | 12.00 in³ | 197,000.00 mm³ |
| Sy | 0.71 in³ | 11,600.00 mm³ |
| Zx | 14.30 in³ | 234,000.00 mm³ |
| Zy | 1.15 in³ | 18,800.00 mm³ |
| rx | 4.56 in | 116.00 mm |
| ry | 0.56 in | 14.20 mm |
| J | 0.05 in⁴ | 20,800.00 mm⁴ |
| Cw | 37.70 in⁶ | 10,100,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus M12x11.8.
Lighter in M12
M12.5x11.6
- Weight
- 11.6 lb/ft (-1.7%)
- Depth
- 12.50 in (+4.2%)
- Ix
- 80.3 in⁴ (+11%)
Heavier in M12
M12.5x12.4
- Weight
- 12.4 lb/ft (+5.1%)
- Depth
- 12.50 in (+4.2%)
- Ix
- 89.3 in⁴ (+24%)
Another Iₓ option in M12
M12x10.8
- Weight
- 10.8 lb/ft (-8.5%)
- Depth
- 12.00 in (0.0%)
- Ix
- 66.7 in⁴ (-7.6%)
Similar weight in M10
M10x9
- Weight
- 9.0 lb/ft (-24%)
- Depth
- 10.00 in (-17%)
- Ix
- 39.0 in⁴ (-46%)
Source: AISC Shapes Database v16.0 · Methodology