CS 400x137 Usiminas · Weight & Dimensions

Usiminas, 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: CS 400x137 (México) · Doble T CS 400x137 (Argentina / LATAM) · UB 400 (UK / Australia)

The CS 400x137 steel profile weighs 136.6 kg/m (91.79 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 17,400 mm². Moment of inertia Ix = 52,404.48 cm⁴, Iy = 17,072.656 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	12.5 mm	0.49 in
Flange thickness (tf)	16 mm	0.63 in
Weight	136.6 kg/m	91.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	17,400 mm²	26.970 in²
Moment of inertia (Ix)	52,404.48 cm⁴	1259.02 in⁴
Moment of inertia (Iy)	17,072.66 cm⁴	410.17 in⁴
Elastic section modulus (Sx)	2,620.22 cm³	159.897 in³
Elastic section modulus (Sy)	853.63 cm³	52.092 in³
Plastic section modulus (Zx)	2,880.8 cm³	175.798 in³
Plastic section modulus (Zy)	1,294.38 cm³	78.988 in³
Radius of gyration (rx)	17.35 cm	6.832 in
Radius of gyration (ry)	9.91 cm	3.900 in