406x178x85 UB Dimensions & Weight
406x178x85 UB is a BS EN 10365 universal beam with an actual depth of 417 mm and a 181 mm flange, weighing 85 kg per metre (57.12 lb/ft) — commonly used for floor beams and roof framing. It is the heaviest of the 5 406x178 UB sizes listed here.
406x178x85 UB Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (d) | 417 mm | 16.417 in |
| Flange width (b) | 181 mm | 7.126 in |
| Web thickness (tw) | 10.9 mm | 0.429 in |
| Flange thickness (tf) | 18.2 mm | 0.717 in |
| Cross-section area (A)computed from weight and steel density | 108.3 cm² | 16.79 in² |
| Mass | 85 kg/m | 57.12 lb/ft |
Standard: BS EN 10365. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does 406x178x85 UB weigh and cost?
406x178x85 UB has a mass of 85 kg per metre. At an example material price of 2.00 per kg (in your currency) that is about 170.00 per metre. Set your quantity, length, and price to total your own run:
Material only, example pricing (same currency as the price you enter). 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 406x178x85 UBs by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every 406x178x85 UB, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: UK UB & UC Sizes Chart · How to calculate steel weight