W12x190 — Dimensions, Weight & Section Properties
American wide-flange (W) beam per ASTM A6 / AISC Steel Construction Manual
W12x190 is an American wide-flange beam 14.4 inches (365.8 mm) deep with a 12.7 in (322.6 mm) flange, weighing 190 pounds per foot (282.8 kg/m) — that is what the "190" 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 | 14.4 in (365.8 mm) |
| Flange width bf | 12.7 in (322.6 mm) |
| Web thickness tw | 1.06 in (26.9 mm) |
| Flange thickness tf | 1.74 in (44.2 mm) |
Weight & Cross-Section
| Weight per foot | 190 lb/ft (282.8 kg/m) |
| 20 ft bar | 3,800 lb |
| 40 ft bar | 7,600 lb |
| Area A | 56 in² (361.3 cm²) |
Section Properties (strong / weak axis)
| Moment of inertia Ix | 1,890 in⁴ (78,667 cm⁴) |
| Section modulus Sx | 263 in³ (4,310 cm³) |
| Radius of gyration rx | 5.82 in |
| Moment of inertia Iy | 589 in⁴ (24,516 cm⁴) |
| Section modulus Sy | 93 in³ (1,524 cm³) |
| Radius of gyration ry | 3.25 in |
Compared with the neighbouring sizes
| Shape | d × bf (in) | lb/ft | Ix (in⁴) | Sx (in³) | Δ weight | Δ Ix |
|---|---|---|---|---|---|---|
| W12x170 | 14 × 12.6 | 170 | 1,650 | 235 | −11 % | −13 % |
| W12x190 (this page) | 14.4 × 12.7 | 190 | 1,890 | 263 | — | — |
| W12x210 | 14.7 × 12.8 | 210 | 2,140 | 292 | +11 % | +13 % |
Deflection example
A simply supported W12x190 spanning 23 ft with a 10 kip point load at midspan deflects 0.08 in (E = 29,000 ksi, Ix = 1,890 in⁴). The L/360 serviceability limit for this span is 0.77 in — the shape passes this quick check.
Calculate with your own span and load →
Frequently asked questions
How much does a W12x190 beam weigh?
W12x190 weighs 190 pounds per foot (282.8 kg/m). The number after the "x" in the designation is always the weight in lb/ft. A 20 ft bar weighs 3,800 lb and a 40 ft bar 7,600 lb.
What are the dimensions of a W12x190?
W12x190 is 14.4 in (365.8 mm) deep with a 12.7 in (322.6 mm) wide flange. The web is 1.06 in thick and the flanges are 1.74 in thick. Note the actual depth differs from the nominal W12 label — always design with the actual value.
What are the dimensions of a W12x190 in mm?
W12x190 is 365.8 mm deep with a 322.6 mm wide flange; the web is 26.9 mm and the flange 44.2 mm thick. In metric section properties: Ix = 78,667 cm⁴, Sx = 4,310 cm³.
How much does a W12x190 weigh in kg?
282.8 kg per meter. A 6 m bar weighs 1,697 kg and a 12 m bar 3,393 kg — handy when ordering US shapes from metric suppliers.
What is the moment of inertia of a W12x190?
About the strong axis, Ix = 1,890 in⁴ (78,667 cm⁴) with section modulus Sx = 263 in³. About the weak axis, Iy = 589 in⁴ and Sy = 93 in³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
W12x190 or W12x210 — what does one size up change?
W12x210 is about 11% heavier (210 vs 190 lb/ft) but about 13% stiffer (Ix 2,140 vs 1,890 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