W24x176 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W24x176 is an American wide-flange beam 25.2 inches (640.1 mm) deep with a 12.9 in (327.7 mm) flange, weighing 176 pounds per foot (261.9 kg/m) — that is what the "176" in the designation means. All values below are the standard AISC published section properties used in US structural design, with metric equivalents alongside.
Typical uses: floor and roof framing, columns, headers, and general steel construction. For a quick stiffness check, see the deflection example below or open the beam calculator with your own span and load.
Dimensions
| Depth d | 25.2 in (640.1 mm) |
| Flange width bf | 12.9 in (327.7 mm) |
| Web thickness tw | 0.75 in (19 mm) |
| Flange thickness tf | 1.34 in (34 mm) |
Weight & Cross-Section
| Weight per foot | 176 lb/ft (261.9 kg/m) |
| 20 ft bar | 3,520 lb |
| 40 ft bar | 7,040 lb |
| Area A | 51.7 in² (333.5 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 5,680 in⁴ (236,419 cm⁴) |
| Section modulus Sx | 450 in³ (7,374 cm³) |
| Radius of gyration rx | 10.5 in |
| Moment of inertia Iy | 479 in⁴ (19,937 cm⁴) |
| Section modulus Sy | 74.3 in³ (1,218 cm³) |
| Radius of gyration ry | 3.04 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W24x162 | 25 × 13 | 162 | 5,170 | 414 | −8 % | −9 % |
| W24x176 (this page) | 25.2 × 12.9 | 176 | 5,680 | 450 | — | — |
| W24x192 | 25.5 × 13 | 192 | 6,260 | 491 | +9 % | +10 % |
Deflection example
A simply supported W24x176 spanning 40 ft with a 10 kip point load at midspan deflects 0.14 in (E = 29,000 ksi, Ix = 5,680 in⁴). The L/360 serviceability limit for this span is 1.33 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W24x176 beam weigh?
W24x176 weighs 176 pounds per foot (261.9 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 3,520 lb and a 40 ft bar 7,040 lb.
What are the dimensions of a W24x176?
W24x176 is 25.2 in (640.1 mm) deep with a 12.9 in (327.7 mm) wide flange. The web is 0.75 in thick and the flanges are 1.34 in thick. Note the actual depth differs from the nominal W24 label — always design with the actual value.
What are the dimensions of a W24x176 in mm?
W24x176 is 640.1 mm deep with a 327.7 mm wide flange; the web is 19 mm and the flange 34 mm thick. In metric section properties: Ix = 236,419 cm⁴, Sx = 7,374 cm³.
How much does a W24x176 weigh in kg?
261.9 kg per meter. A 6 m bar weighs 1,572 kg and a 12 m bar 3,143 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W24x176?
About the strong axis, Ix = 5,680 in⁴ (236,419 cm⁴) with section modulus Sx = 450 in³. About the weak axis, Iy = 479 in⁴ and Sy = 74.3 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W24x176 or W24x192 — what does one size up change?
W24x192 is about 9% heavier (192 vs 176 lb/ft) but about 10% stiffer (Ix 6,260 vs 5,680 in⁴). Going one step up within the same depth group is usually the cheapest way to cut deflection.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About