ST12X40 Dimensions & Weight
ST12X40 is an AISC structural tee with a nominal depth of 12 in, weighing 40 lb per foot — commonly used for truss chords, hangers, and lintels. It is the lightest of the 5 ST12 sizes listed here.
ST12X40 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Nominal depthfrom the designation | 12 in | 304.8 mm |
| Cross-section area (A)computed from weight and steel density | 11.76 in² | 75.9 cm² |
| Weight | 40 lb/ft | 59.5 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does ST12X40 weigh and cost?
ST12X40 weighs 40 lb per foot. At an example material price of $0.92/lb that is about $36.80 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