M3X2.9 Dimensions & Weight
M3X2.9 is an AISC miscellaneous (M) beam with a nominal depth of 3 in, weighing 2.9 lb per foot — commonly used for lintels, trimmers, and light framing.
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M3X2.9 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Nominal depthfrom the designation | 3 in | 76.2 mm |
| Cross-section area (A)computed from weight and steel density | 0.85 in² | 5.5 cm² |
| Weight | 2.9 lb/ft | 4.3 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does M3X2.9 weigh and cost?
M3X2.9 weighs 2.9 lb per foot. At an example material price of $0.92/lb that is about $2.67 per foot. Set your quantity, length, and price to total your own run:
Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
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Related sizes
- M4X3.23.2 lb/ft
- M4X3.453.45 lb/ft
- M6X3.73.7 lb/ft
- M4X4.084.08 lb/ft
- M6X4.44.4 lb/ft
- M4X66 lb/ft
- M8X6.26.2 lb/ft
- M8X6.56.5 lb/ft
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Deeper reading: AISC Shape Database Guide · How to calculate steel weight