M12X10 Dimensions & Weight

M12X10 is an AISC miscellaneous (M) beam with a nominal depth of 12 in, weighing 10 lb per foot — commonly used for light floor framing, mezzanines, and residential beams. It is the lightest of the 3 M12 sizes listed here.

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M12X10 Dimensions

Property	Imperial	Metric
Nominal depthfrom the designation	12 in	304.8 mm
Cross-section area (A)computed from weight and steel density	2.94 in²	19 cm²
Weight	10 lb/ft	14.9 kg/m

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

What does M12X10 weigh and cost?

M12X10 weighs 10 lb per foot. At an example material price of $0.92/lb that is about $9.20 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

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Total weight

200 lbs

Material cost

$184.00

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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