M10X9 Dimensions & Weight

M10X9 is an AISC miscellaneous (M) beam with a nominal depth of 10 in, weighing 9 lb per foot — commonly used for light floor framing, mezzanines, and residential beams. It is the heaviest of the 3 M10 sizes listed here.

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M10X9 Dimensions

Property	Imperial	Metric
Nominal depthfrom the designation	10 in	254 mm
Cross-section area (A)computed from weight and steel density	2.64 in²	17 cm²
Weight	9 lb/ft	13.4 kg/m

Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.

What does M10X9 weigh and cost?

M10X9 weighs 9 lb per foot. At an example material price of $0.92/lb that is about $8.28 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

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Total weight

180 lbs

Material cost

$165.60

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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