I 900x350x12x20 Cintac · Weight & Dimensions

Cintac, 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 900x350x12x20 (México) · Doble T I 900x350x12x20 (Argentina / LATAM) · UB 900 (UK / Australia)

The I 900x350x12x20 steel profile weighs 190.9 kg/m (128.29 lb/ft), has a depth of 900 mm (35.43 in), flange width 350 mm (13.78 in). Cross-sectional area: 24,320 mm². Moment of inertia Ix = 334,692.267 cm⁴, Iy = 14,304.051 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	900 mm	35.43 in
Width (b)	350 mm	13.78 in
Web thickness (tw)	12 mm	0.47 in
Flange thickness (tf)	20 mm	0.79 in
Weight	190.9 kg/m	128.29 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	24,320 mm²	37.696 in²
Moment of inertia (Ix)	334,692.27 cm⁴	8040.98 in⁴
Moment of inertia (Iy)	14,304.05 cm⁴	343.65 in⁴
Elastic section modulus (Sx)	7,437.61 cm³	453.872 in³
Elastic section modulus (Sy)	817.37 cm³	49.879 in³
Plastic section modulus (Zx)	8,378.8 cm³	511.308 in³
Plastic section modulus (Zy)	1,255.96 cm³	76.644 in³
Radius of gyration (rx)	37.1 cm	14.605 in
Radius of gyration (ry)	7.67 cm	3.019 in