I 700x300x8x20 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 700x300x8x20 (México) · Doble T I 700x300x8x20 (Argentina / LATAM) · UB 700 (UK / Australia)

The I 700x300x8x20 steel profile weighs 135.7 kg/m (91.16 lb/ft), has a depth of 700 mm (27.56 in), flange width 300 mm (11.81 in). Cross-sectional area: 17,280 mm². Moment of inertia Ix = 157,926.4 cm⁴, Iy = 9,002.816 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	700 mm	27.56 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	20 mm	0.79 in
Weight	135.7 kg/m	91.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	17,280 mm²	26.784 in²
Moment of inertia (Ix)	157,926.4 cm⁴	3794.18 in⁴
Moment of inertia (Iy)	9,002.82 cm⁴	216.29 in⁴
Elastic section modulus (Sx)	4,512.18 cm³	275.351 in³
Elastic section modulus (Sy)	600.19 cm³	36.626 in³
Plastic section modulus (Zx)	4,951.2 cm³	302.142 in³
Plastic section modulus (Zy)	910.56 cm³	55.566 in³
Radius of gyration (rx)	30.23 cm	11.902 in
Radius of gyration (ry)	7.22 cm	2.842 in