I 500x500x20x40 CISC · Weight & Dimensions

CISC, 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 500x500x20x40 (México) · Doble T I 500x500x20x40 (Argentina / LATAM) · UB 500 (UK / Australia)

The I 500x500x20x40 steel profile weighs 379.9 kg/m (255.32 lb/ft), has a depth of 500 mm (19.69 in), flange width 500 mm (19.69 in). Cross-sectional area: 48,400 mm². Moment of inertia Ix = 224,481.333 cm⁴, Iy = 83,361.333 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	500 mm	19.69 in
Width (b)	500 mm	19.69 in
Web thickness (tw)	20 mm	0.79 in
Flange thickness (tf)	40 mm	1.57 in
Weight	379.9 kg/m	255.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	48,400 mm²	75.020 in²
Moment of inertia (Ix)	224,481.33 cm⁴	5393.16 in⁴
Moment of inertia (Iy)	83,361.33 cm⁴	2002.76 in⁴
Elastic section modulus (Sx)	8,979.25 cm³	547.950 in³
Elastic section modulus (Sy)	3,334.45 cm³	203.482 in³
Plastic section modulus (Zx)	10,082 cm³	615.244 in³
Plastic section modulus (Zy)	5,042 cm³	307.683 in³
Radius of gyration (rx)	21.54 cm	8.479 in
Radius of gyration (ry)	13.12 cm	5.167 in