M4X3.45 Dimensions & Weight
M4X3.45 is an AISC miscellaneous (M) beam with a nominal depth of 4 in, weighing 3.45 lb per foot — commonly used for lintels, trimmers, and light framing.
M4X3.45 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Nominal depthfrom the designation | 4 in | 101.6 mm |
| Cross-section area (A)computed from weight and steel density | 1.01 in² | 6.5 cm² |
| Weight | 3.45 lb/ft | 5.1 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does M4X3.45 weigh and cost?
M4X3.45 weighs 3.45 lb per foot. At an example material price of $0.92/lb that is about $3.17 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.
Pricing more than one size? Build a full member list in the free calculator →
Stop counting M4X3.45s by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every M4X3.45, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: AISC Shape Database Guide · How to calculate steel weight