W10x39 is a wide flange steel beam that is 9.92 in deep with a 7.99 in flange and weighs 39 lb/ft (58 kg/m). Its metric designation is W250x58. All values below come from the AISC Shapes Database v16.0.
W10x39 Dimensions
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Nominal weight | W | 39 lb/ft | 58 kg/m |
| Cross-sectional area | A | 11.5 in² | 7,420 mm² |
| Depth | d | 9.92 in | 252 mm |
| Flange width | bf | 7.99 in | 203 mm |
| Web thickness | tw | 0.315 in | 8 mm |
| Flange thickness | tf | 0.53 in | 13.5 mm |
| Distance to web toe of fillet (design) | kdes | 1.03 in | 26.2 mm |
| Distance to web toe of fillet (detailing) | kdet | 1.1875 in | 30.2 mm |
| Web center line to flange toe of fillet | k1 | 0.8125 in | 20.6 mm |
| Distance between web toes of fillets | T | 7.5 in | 191 mm |
| Workable gage (inner holes) | WGi | 5.5 in | 140 mm |
W10x39 Section Properties
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Moment of inertia, x-axis | Ix | 209 in⁴ | 87 ×10⁶ mm⁴ |
| Elastic section modulus, x-axis | Sx | 42.1 in³ | 690 ×10³ mm³ |
| Plastic section modulus, x-axis | Zx | 46.8 in³ | 767 ×10³ mm³ |
| Radius of gyration, x-axis | rx | 4.27 in | 108 mm |
| Moment of inertia, y-axis | Iy | 45 in⁴ | 18.7 ×10⁶ mm⁴ |
| Elastic section modulus, y-axis | Sy | 11.3 in³ | 185 ×10³ mm³ |
| Plastic section modulus, y-axis | Zy | 17.2 in³ | 282 ×10³ mm³ |
| Radius of gyration, y-axis | ry | 1.98 in | 50.3 mm |
| Torsional constant | J | 0.976 in⁴ | 406 ×10³ mm⁴ |
| Warping constant | Cw | 992 in⁶ | 266 ×10⁹ mm⁶ |
| Effective radius of gyration | rts | 2.24 in | 56.9 mm |
| Distance between flange centroids | ho | 9.39 in | 239 mm |
| Flange slenderness | bf/2tf | 7.53 | 7.53 |
| Web slenderness | h/tw | 25 | 25 |
W10x39 Weight Calculator
Enter a length to get the total weight of a W10x39 beam. A 20 ft length weighs 780 lb.
Uses the AISC nominal weight: 39 lb/ft (58 kg/m).
Beams Similar to W10x39
See every W10 size in the W10 beam sizes chart, or compare all shapes in the wide flange beam sizes chart.
W10x39 FAQ
What does W10x39 mean?
W means wide flange. The first number (10) is the nominal depth in inches, and the second number (39) is the weight in pounds per foot. The actual depth of W10x39 is 9.92 in. How to read steel beam sizes.
How much does a W10x39 beam weigh?
W10x39 weighs 39 lb per foot (58 kg per meter). A 20 ft beam weighs about 780 lb. Use the calculator above for any length.
What is the metric equivalent of W10x39?
The metric (SI) designation is W250x58: 252 mm deep with a 203 mm flange and 58 kg/m.
How far can a W10x39 beam span?
Span depends on the load, support conditions, deflection limits and local building code, so it cannot be read from a size table. A licensed structural engineer must size any beam that carries a load.
Source: AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition. Last updated: September 2026.
This page is reference information only and is not engineering advice. Do not use it for a specific design without verification by a licensed engineer or architect. Full disclaimer.