Steel Beam Sizes / AISC / M-Shapes / M3x2.9
M3x2.9 Steel Beam Dimensions and Properties
AISC Miscellaneous beams · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
M3x2.9 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 | 2.90 lb/ft | 4.30 kg/m |
| Depth, d | 3.00 in | 76.20 mm |
| Flange width, bf | 2.25 in | 57.20 mm |
| tw | 0.090 in | 2.290 mm |
| tf | 0.130 in | 3.300 mm |
| Area | 0.91 in² | 590.00 mm² |
| Ix | 1.50 in⁴ | 624,000.00 mm⁴ |
| Iy | 0.25 in⁴ | 103,000.00 mm⁴ |
| Sx | 1.00 in³ | 16,400.00 mm³ |
| Sy | 0.22 in³ | 3,620.00 mm³ |
| Zx | 1.12 in³ | 18,400.00 mm³ |
| Zy | 0.34 in³ | 5,640.00 mm³ |
| rx | 1.28 in | 32.50 mm |
| ry | 0.52 in | 13.20 mm |
| J | 0.01 in⁴ | 3,290.00 mm⁴ |
| Cw | 0.51 in⁶ | 137,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus M3x2.9.
Source: AISC Shapes Database v16.0 · Methodology