Steel Beam Sizes / CISC / MC Channels / MC100×20.5
MC100×20.5 Steel Beam Dimensions and Properties
CISC Miscellaneous channels · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
MC100×20.5 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 | 13.80 lb/ft | 20.50 kg/m |
| Depth, d | 4.02 in | 102.00 mm |
| Flange width, bf | 2.52 in | 64.00 mm |
| tw | 0.512 in | 13.000 mm |
| tf | 0.512 in | 13.000 mm |
| Area | 4.11 in² | 2,650.00 mm² |
| Ix | 9.08 in⁴ | 3,780,000 mm⁴ |
| Iy | 2.12 in⁴ | 882,000.00 mm⁴ |
| Sx | 4.52 in³ | 74,100.00 mm³ |
| Sy | 1.26 in³ | 20,700.00 mm³ |
| rx | 1.48 in | 37.70 mm |
| ry | 0.72 in | 18.20 mm |
| J | 0.39 in⁴ | 164,000.00 mm⁴ |
| Cw | 5.03 in⁶ | 1,350,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus MC100×20.5.
Source: CISC Structural Section Tables SST12.1 · v12.1 · Methodology