W44x335 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W44x335 is an American wide-flange beam 44 inches (1,117.6 mm) deep with a 15.9 in (403.9 mm) flange, weighing 335 pounds per foot (498.5 kg/m) — that is what the "335" 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 | 44 in (1,117.6 mm) |
| Flange width bf | 15.9 in (403.9 mm) |
| Web thickness tw | 1.03 in (26.2 mm) |
| Flange thickness tf | 1.77 in (45 mm) |
Weight & Cross-Section
| Weight per foot | 335 lb/ft (498.5 kg/m) |
| 20 ft bar | 6,700 lb |
| 40 ft bar | 13,400 lb |
| Area A | 98.5 in² (635.5 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 31,100 in⁴ (1,294,475 cm⁴) |
| Section modulus Sx | 1,410 in³ (23,106 cm³) |
| Radius of gyration rx | 17.8 in |
| Moment of inertia Iy | 1,200 in⁴ (49,948 cm⁴) |
| Section modulus Sy | 150 in³ (2,458 cm³) |
| Radius of gyration ry | 3.49 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W44x290 | 43.6 × 15.8 | 290 | 27,000 | 1,240 | −13 % | −13 % |
| W44x335 (this page) | 44 × 15.9 | 335 | 31,100 | 1,410 | — | — |
Deflection example
A simply supported W44x335 spanning 70 ft with a 10 kip point load at midspan deflects 0.14 in (E = 29,000 ksi, Ix = 31,100 in⁴). The L/360 serviceability limit for this span is 2.33 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W44x335 beam weigh?
W44x335 weighs 335 pounds per foot (498.5 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 6,700 lb and a 40 ft bar 13,400 lb.
What are the dimensions of a W44x335?
W44x335 is 44 in (1,117.6 mm) deep with a 15.9 in (403.9 mm) wide flange. The web is 1.03 in thick and the flanges are 1.77 in thick. Note the actual depth differs from the nominal W44 label — always design with the actual value.
What are the dimensions of a W44x335 in mm?
W44x335 is 1,117.6 mm deep with a 403.9 mm wide flange; the web is 26.2 mm and the flange 45 mm thick. In metric section properties: Ix = 1,294,475 cm⁴, Sx = 23,106 cm³.
How much does a W44x335 weigh in kg?
498.5 kg per meter. A 6 m bar weighs 2,991 kg and a 12 m bar 5,983 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W44x335?
About the strong axis, Ix = 31,100 in⁴ (1,294,475 cm⁴) with section modulus Sx = 1,410 in³. About the weak axis, Iy = 1,200 in⁴ and Sy = 150 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W44x335 or W44x290 — what does one size down change?
W44x290 is about 13% lighter (290 vs 335 lb/ft) but about 13% less stiff (Ix 27,000 vs 31,100 in⁴). Check deflection before downsizing — stiffness falls much faster than weight.
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