Steel Section Catalog
ISLB 250 — Dimensions & Section Properties
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: ISLB 250 (México) · Doble T ISLB 250 (Argentina / LATAM) · UB 250 (UK / Australia)
The ISLB 250 steel profile weighs 27.9 kg/m (18.75 lb/ft), has a depth of 250 mm (9.84 in), flange width 125 mm (4.92 in). Cross-sectional area: 3,475 mm². Moment of inertia Ix = 3,645.58 cm⁴, Iy = 267.37 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) | 6.1 mm | 0.24 in |
| Flange thickness (tf) | 8.2 mm | 0.32 in |
| Fillet radius (r) | 13 mm | 0.51 in |
| Weight | 27.9 kg/m | 18.75 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 3,475 mm² | 5.386 in² |
| Moment of inertia (Ix) | 3,645.58 cm⁴ | 87.59 in⁴ |
| Moment of inertia (Iy) | 267.37 cm⁴ | 6.42 in⁴ |
| Elastic section modulus (Sx) | 291.65 cm³ | 17.798 in³ |
| Elastic section modulus (Sy) | 42.78 cm³ | 2.611 in³ |
| Plastic section modulus (Zx) | 331.06 cm³ | 20.203 in³ |
| Plastic section modulus (Zy) | 66.24 cm³ | 4.042 in³ |
| Radius of gyration (rx) | 10.24 cm | 4.031 in |
| Radius of gyration (ry) | 2.77 cm | 1.091 in |
Beam Calculator— ISLB 250
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mfixed @ 0mfixed @ 6m→kN/m
Results — ISLB 250
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
2.31 mm
L/2592
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
