W10x19 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W10x19 is an American wide-flange beam 10.2 inches (259.1 mm) deep with a 4.02 in (102.1 mm) flange, weighing 19 pounds per foot (28.3 kg/m) — that is what the "19" 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 | 10.2 in (259.1 mm) |
| Flange width bf | 4.02 in (102.1 mm) |
| Web thickness tw | 0.25 in (6.4 mm) |
| Flange thickness tf | 0.395 in (10 mm) |
Weight & Cross-Section
| Weight per foot | 19 lb/ft (28.3 kg/m) |
| 20 ft bar | 380 lb |
| 40 ft bar | 760 lb |
| Area A | 5.62 in² (36.3 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 96.3 in⁴ (4,008 cm⁴) |
| Section modulus Sx | 18.8 in³ (308 cm³) |
| Radius of gyration rx | 4.14 in |
| Moment of inertia Iy | 4.29 in⁴ (179 cm⁴) |
| Section modulus Sy | 2.14 in³ (35 cm³) |
| Radius of gyration ry | 0.87 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W10x17 | 10.1 × 4.01 | 17 | 81.9 | 16.2 | −11 % | −15 % |
| W10x19 (this page) | 10.2 × 4.02 | 19 | 96.3 | 18.8 | — | — |
| W10x22 | 10.2 × 5.75 | 22 | 118 | 23.2 | +16 % | +23 % |
Deflection example
A simply supported W10x19 spanning 16 ft with a 10 kip point load at midspan deflects 0.53 in (E = 29,000 ksi, Ix = 96.3 in⁴). The L/360 serviceability limit for this span is 0.53 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W10x19 beam weigh?
W10x19 weighs 19 pounds per foot (28.3 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 380 lb and a 40 ft bar 760 lb.
What are the dimensions of a W10x19?
W10x19 is 10.2 in (259.1 mm) deep with a 4.02 in (102.1 mm) wide flange. The web is 0.25 in thick and the flanges are 0.4 in thick. Note the actual depth differs from the nominal W10 label — always design with the actual value.
What are the dimensions of a W10x19 in mm?
W10x19 is 259.1 mm deep with a 102.1 mm wide flange; the web is 6.4 mm and the flange 10 mm thick. In metric section properties: Ix = 4,008 cm⁴, Sx = 308 cm³.
How much does a W10x19 weigh in kg?
28.3 kg per meter. A 6 m bar weighs 170 kg and a 12 m bar 339 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W10x19?
About the strong axis, Ix = 96.3 in⁴ (4,008 cm⁴) with section modulus Sx = 18.8 in³. About the weak axis, Iy = 4.29 in⁴ and Sy = 2.14 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W10x19 or W10x22 — what does one size up change?
W10x22 is about 16% heavier (22 vs 19 lb/ft) but about 23% stiffer (Ix 118 vs 96.3 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