Steel Beam Sizes / AISC / MC Channels / MC12x45
MC12x45 Dimensions, Weight and Section Properties
AISC Miscellaneous channels · v16.0
MC12x45: 12 in depth, 4.01 in flange width, 45 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
MC12x45 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 | 45.00 lb/ft | 67.00 kg/m |
| Depth, d | 12.00 in | 305.00 mm |
| Flange width, bf | 4.01 in | 102.00 mm |
| tw | 0.710 in | 18.000 mm |
| tf | 0.700 in | 17.800 mm |
| Area | 13.20 in² | 8,520.00 mm² |
| Ix | 251.00 in⁴ | 104,000,000 mm⁴ |
| Iy | 15.80 in⁴ | 6,580,000 mm⁴ |
| Sx | 41.90 in³ | 687,000.00 mm³ |
| Sy | 5.30 in³ | 86,900.00 mm³ |
| Zx | 52.00 in³ | 852,000.00 mm³ |
| Zy | 10.10 in³ | 166,000.00 mm³ |
| rx | 4.36 in | 111.00 mm |
| ry | 1.09 in | 27.70 mm |
| J | 2.33 in⁴ | 970,000.00 mm⁴ |
| Cw | 373.00 in⁶ | 100,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus MC12x45.
Lighter in MC12
MC12x40
- Weight
- 40.0 lb/ft (-11%)
- Depth
- 12.00 in (0.0%)
- Ix
- 234.0 in⁴ (-6.8%)
Heavier in MC12
MC12x50
- Weight
- 50.0 lb/ft (+11%)
- Depth
- 12.00 in (0.0%)
- Ix
- 269.0 in⁴ (+7.2%)
Another Iₓ option in MC12
MC12x35
- Weight
- 35.0 lb/ft (-22%)
- Depth
- 12.00 in (0.0%)
- Ix
- 216.0 in⁴ (-14%)
Similar weight in MC10
MC10x41.1
- Weight
- 41.1 lb/ft (-8.7%)
- Depth
- 10.00 in (-17%)
- Ix
- 157.0 in⁴ (-37%)
Source: AISC Shapes Database v16.0 · Methodology