I 1270x406.4x11.1x25.4 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 1270x406.4x11.1x25.4 (México) · Doble T I 1270x406.4x11.1x25.4 (Argentina / LATAM) · UB 1270 (UK / Australia)

The I 1270x406.4x11.1x25.4 steel profile weighs 268.3 kg/m (180.30 lb/ft), has a depth of 1270 mm (50.00 in), flange width 406.4 mm (16.00 in). Cross-sectional area: 34,178.24 mm². Moment of inertia Ix = 967,244.049 cm⁴, Iy = 28,428.627 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)	25.4 mm	1.00 in
Weight	268.3 kg/m	180.30 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	34,178.24 mm²	52.976 in²
Moment of inertia (Ix)	967,244.05 cm⁴	23238.04 in⁴
Moment of inertia (Iy)	28,428.63 cm⁴	683.00 in⁴
Elastic section modulus (Sx)	15,232.19 cm³	929.529 in³
Elastic section modulus (Sy)	1,399.05 cm³	85.375 in³
Plastic section modulus (Zx)	16,972.35 cm³	1035.721 in³
Plastic section modulus (Zy)	2,135.1 cm³	130.292 in³
Radius of gyration (rx)	53.2 cm	20.944 in
Radius of gyration (ry)	9.12 cm	3.591 in