Steel Beam Sizes / AISC / M-Shapes / M3x2.9
M3x2.9 Dimensions, Weight and Section Properties
AISC Miscellaneous beams · v16.0
M3x2.9: 3 in depth, 2.25 in flange width, 2.9 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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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
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus M3x2.9.
Source: AISC Shapes Database v16.0 · Methodology