W8x10 weight and dimensions
15 kg/m · 10.00 lb/ft
W8x10 is a 200 mm deep beam with a 100 mm flange, 4.32 mm web and 5.21 mm flange thickness. It weighs 15 kg per metre (10.00 lb/ft). It belongs to the W-shape wide flange beam series, American (AISC / ASTM A6).
W8x10 weight calculator
Weight of standard lengths
| Pieces | 20 ft each (lb) | 40 ft each (lb) |
|---|---|---|
| 1 | 201.6 | 403.2 |
| 5 | 1,008.0 | 2,015.9 |
| 10 | 2,015.9 | 4,031.8 |
| 20 | 4,031.8 | 8,063.6 |
| 50 | 10,079.5 | 20,159.1 |
Pieces per ton
| 20 ft lengths per short ton (2,000 lb) | 9.9 |
| 40 ft lengths per short ton (2,000 lb) | 5.0 |
| Length per ton | 198.4 ft |
Useful for converting a tonnage order into a number of bars.
Surface area for painting
| Per metre of length | 0.780 m²/m |
| Per foot of length | 2.56 ft²/ft |
| Per tonne of steel | 52.0 m²/t |
| A 12 m length | 9.36 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 | 200 mm | 7.874 in |
| Flange width b | 100 mm | 3.937 in |
| Web thickness tw | 4.32 mm | 0.170 in |
| Flange thickness tf | 5.21 mm | 0.205 in |
| Root radius r | 7.6 mm | 0.299 in |
| Mass | 15 kg/m | 10.00 lb/ft |
Section properties
| Property | Value | Unit |
|---|---|---|
| Area | 19.10 | cm² |
| Moment of inertia Ix | 1,280 | cm⁴ |
| Moment of inertia Iy | 87.00 | cm⁴ |
| Elastic modulus Zx | 128 | cm³ |
| Elastic modulus Zy | 17.40 | cm³ |
| Plastic modulus Zpx | 145 | cm³ |
| Plastic modulus Zpy | 27.20 | cm³ |
| Radius of gyration rx | 8.18 | cm |
| Radius of gyration ry | 2.14 | cm |
| Torsion constant J | 1.77 | 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.
W8x10 and its closest equivalents, drawn over each other at the same scale.
| Section | Standard | Depth (mm) | kg/m | Weight vs W8x10 |
|---|---|---|---|---|
| W8x10 | AISC | 200 | 15 | — |
| ISMB 175 | IS | 175 | 19.50 | +30.0% |
| IPE 180 | EN | 180 | 18.80 | +25.3% |
W8 series weights
Next heavier: W8x13 (19.3 kg/m).
Stiffness and strength per kilogram
The elastic section modulus Zx governs bending strength. Dividing it by the weight shows how efficiently each size uses its steel: higher is better when weight is the cost driver.
| Section | kg/m | Ix (cm⁴) | Zx (cm³) | Zx per kg/m |
|---|---|---|---|---|
| W8x10 | 15.00 | 1,280 | 128.0 | 8.53 |
| W8x13 | 19.30 | 1,650 | 162.0 | 8.39 |
| W8x15 | 22.50 | 2,000 | 193.0 | 8.58 |
| W8x18 | 26.60 | 2,580 | 249.0 | 9.36 |
Full table: W-shape (wide flange) beam chart (PDF).
How the weight is calculated
Mass per metre = cross-sectional area × density of steel = 19.10 cm² × 0.785 kg/(cm²·m) = 14.99 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
Beams of this shape are used as floor and roof beams, lintels, crane girders and frame members, where bending about the strong axis governs.
Frequently asked questions
What is the weight of W8x10 per metre?
W8x10 weighs 15 kg/m, which is 10.00 lb/ft.
How much does a 6 m or 12 m length of W8x10 weigh?
A 6 m length weighs about 90.0 kg and a 12 m length about 180.0 kg.
What is the equivalent of W8x10 in other standards?
By depth and weight the closest match is ISMB 175 (19.5 kg/m, 175 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.