Steel Section Catalog
ISMB 250
IS — Wide Flange (I-beam)
Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.
Also known as: ISMB 250 (México) · Doble T ISMB 250 (Argentina / LATAM) · UB 250 (UK / Australia)
The ISMB 250 steel profile weighs 37.3 kg/m (25.07 lb/ft), has a depth of 250 mm (9.84 in), flange width 125 mm (4.92 in). Cross-sectional area: 4,677.5 mm². Moment of inertia Ix = 5,065.77 cm⁴, Iy = 407.52 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 125 mm | 4.92 in |
| Web thickness (tw) | 6.9 mm | 0.27 in |
| Flange thickness (tf) | 12.5 mm | 0.49 in |
| Fillet radius (r) | 13 mm | 0.51 in |
| Weight | 37.3 kg/m | 25.07 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 4,677.5 mm² | 7.250 in² |
| Moment of inertia (Ix) | 5,065.77 cm⁴ | 121.71 in⁴ |
| Moment of inertia (Iy) | 407.52 cm⁴ | 9.79 in⁴ |
| Elastic section modulus (Sx) | 405.26 cm³ | 24.731 in³ |
| Elastic section modulus (Sy) | 65.2 cm³ | 3.979 in³ |
| Plastic section modulus (Zx) | 458.42 cm³ | 27.975 in³ |
| Plastic section modulus (Zy) | 100.33 cm³ | 6.123 in³ |
| Radius of gyration (rx) | 10.41 cm | 4.098 in |
| Radius of gyration (ry) | 2.95 cm | 1.161 in |
Beam Calculator— ISMB 250
3D preview unavailable
Your device does not support WebGL. The 2D diagram below is still fully functional.
mfixed @ 0mfixed @ 6m→kN/m
Results — ISMB 250
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
1.67 mm
L/3602
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
