I 1270x406.4x11.1x15.9 AHMSA · Weight & Dimensions

AHMSA, welded sections · 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: I 1270x406.4x11.1x15.9 (México) · Doble T I 1270x406.4x11.1x15.9 (Argentina / LATAM) · UB 1270 (UK / Australia)

The I 1270x406.4x11.1x15.9 steel profile weighs 209.3 kg/m (140.68 lb/ft), has a depth of 1270 mm (50.00 in), flange width 406.4 mm (16.00 in). Cross-sectional area: 26,667.54 mm². Moment of inertia Ix = 683,765.113 cm⁴, Iy = 17,801.286 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1270 mm	50.00 in
Width (b)	406.4 mm	16.00 in
Web thickness (tw)	11.1 mm	0.44 in
Flange thickness (tf)	15.9 mm	0.63 in
Weight	209.3 kg/m	140.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	26,667.54 mm²	41.335 in²
Moment of inertia (Ix)	683,765.11 cm⁴	16427.46 in⁴
Moment of inertia (Iy)	17,801.29 cm⁴	427.68 in⁴
Elastic section modulus (Sx)	10,767.95 cm³	657.104 in³
Elastic section modulus (Sy)	876.05 cm³	53.460 in³
Plastic section modulus (Zx)	12,358.15 cm³	754.144 in³
Plastic section modulus (Zy)	1,351.17 cm³	82.454 in³
Radius of gyration (rx)	50.64 cm	19.936 in
Radius of gyration (ry)	8.17 cm	3.217 in