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.
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:
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
Deeper reading: AISC Shape Database Guide · How to calculate steel weight