MC18X42.7 Dimensions & Weight

MC18X42.7 is an AISC miscellaneous channel with an actual depth of 18 in and a 4 in flange, weighing 42.7 lb per foot — commonly used for stair stringers, lintels, trimmers, and edge framing. It is the lightest of the 4 MC18 sizes listed here.

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MC18X42.7 Dimensions

Property	Imperial	Metric
Depth (d)	18 in	457.2 mm
Flange width (bf)	3.95 in	100.3 mm
Cross-section area (A)	12.6 in²	81.3 cm²
Weight	42.7 lb/ft	63.5 kg/m

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

What does MC18X42.7 weigh and cost?

MC18X42.7 weighs 42.7 lb per foot. At an example material price of $0.92/lb that is about $39.28 per foot. Set your quantity, length, and price to total your own run:

QtyLength (ft)$ / lb

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Total weight

854 lbs

Material cost

$785.68

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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