W4x13 weight and dimensions
19.3 kg/m · 13.00 lb/ft
W4x13 is a 106 mm deep beam with a 103 mm flange, 7.11 mm web and 8.76 mm flange thickness. It weighs 19.3 kg per metre (13.00 lb/ft). It belongs to the W-shape wide flange beam series, American (AISC / ASTM A6).
W4x13 weight calculator
Weight of standard lengths
| Pieces | 20 ft each (lb) | 40 ft each (lb) |
|---|---|---|
| 1 | 259.4 | 518.8 |
| 5 | 1,296.9 | 2,593.8 |
| 10 | 2,593.8 | 5,187.6 |
| 20 | 5,187.6 | 10,375.2 |
| 50 | 12,969.0 | 25,938.0 |
Pieces per ton
| 20 ft lengths per short ton (2,000 lb) | 7.7 |
| 40 ft lengths per short ton (2,000 lb) | 3.9 |
| Length per ton | 154.2 ft |
Useful for converting a tonnage order into a number of bars.
Surface area for painting
| Per metre of length | 0.599 m²/m |
| Per foot of length | 1.97 ft²/ft |
| Per tonne of steel | 31.0 m²/t |
| A 12 m length | 7.19 m² |
Outside perimeter × length, all faces (AISC perimeter PB). Use it to estimate paint, primer, fireproofing or galvanizing quantities.
Cross-section
Drawn to scale. Dimensions in mm.
Dimensions
| Depth h | 106 mm | 4.173 in |
| Flange width b | 103 mm | 4.055 in |
| Web thickness tw | 7.11 mm | 0.280 in |
| Flange thickness tf | 8.76 mm | 0.345 in |
| Root radius r | 6.3 mm | 0.248 in |
| Mass | 19.3 kg/m | 13.00 lb/ft |
Section properties
| Property | Value | Unit |
|---|---|---|
| Area | 24.70 | cm² |
| Moment of inertia Ix | 470 | cm⁴ |
| Moment of inertia Iy | 161 | cm⁴ |
| Elastic modulus Zx | 89.50 | cm³ |
| Elastic modulus Zy | 31.10 | cm³ |
| Plastic modulus Zpx | 103 | cm³ |
| Plastic modulus Zpy | 47.90 | cm³ |
| Radius of gyration rx | 4.37 | cm |
| Radius of gyration ry | 2.54 | cm |
| Torsion constant J | 6.29 | cm⁴ |
Equivalent sections in other standards
The closest sections by depth and weight. They are not direct substitutes: check bending, buckling and connection details before swapping one for another.
W4x13 and its closest equivalents, drawn over each other at the same scale.
| Section | Standard | Depth (mm) | kg/m | Weight vs W4x13 |
|---|---|---|---|---|
| W4x13 | AISC | 106 | 19.3 | — |
| HEB 100 | EN | 100 | 20.44 | +5.9% |
| HEA 120 | EN | 114 | 19.89 | +3.1% |
W4 series weights
Full table: W-shape (wide flange) beam chart (PDF).
How the weight is calculated
Mass per metre = cross-sectional area × density of steel = 24.70 cm² × 0.785 kg/(cm²·m) = 19.39 kg/m.
Rolled sections are made to a nominal mass, and the actual mass can differ by a few percent within the tolerances of ASTM A6. For purchasing, invoicing by weight or checking deliveries, use the producer's stated mass.
Typical uses
Wide flange sections like this are used as columns, heavy beams and transfer girders, where stiffness about both axes matters.
Frequently asked questions
What is the weight of W4x13 per metre?
W4x13 weighs 19.3 kg/m, which is 13.00 lb/ft.
How much does a 6 m or 12 m length of W4x13 weigh?
A 6 m length weighs about 115.8 kg and a 12 m length about 231.6 kg.
What is the equivalent of W4x13 in other standards?
By depth and weight the closest match is HEB 100 (20.44 kg/m, 100 mm deep). Check section properties before substituting one for the other.
Source: AISC Shapes Database v16.0. Values are nominal; verify with the producer before ordering.