Steel Beam Sizes / AISC / M-Shapes / M12x11.8
M12x11.8 Steel Beam Dimensions and Properties
AISC Miscellaneous beams · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
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
Same-series weight neighbors, closest Ix, 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%)
Closest Iₓ 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