W 300 x 105,8 KS · Weight & Dimensions

KS, hot-rolled 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: IPR 300 x 105,8 (México) · Doble T 300 x 105,8 (Argentina / LATAM) · UB 300 (UK / Australia)

The W 300 x 105,8 steel profile weighs 105.8 kg/m (71.11 lb/ft), has a depth of 300 mm (11.81 in), flange width 305 mm (12.01 in). Cross-sectional area: 13,478.124 mm². Moment of inertia Ix = 21,535.205 cm⁴, Iy = 7,104.758 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	305 mm	12.01 in
Web thickness (tw)	15 mm	0.59 in
Flange thickness (tf)	15 mm	0.59 in
Fillet radius (r)	18 mm	0.71 in
Weight	105.8 kg/m	71.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,478.12 mm²	20.891 in²
Moment of inertia (Ix)	21,535.21 cm⁴	517.38 in⁴
Moment of inertia (Iy)	7,104.76 cm⁴	170.69 in⁴
Elastic section modulus (Sx)	1,435.68 cm³	87.611 in³
Elastic section modulus (Sy)	465.89 cm³	28.430 in³
Plastic section modulus (Zx)	1,613.68 cm³	98.473 in³
Plastic section modulus (Zy)	716.08 cm³	43.698 in³
Radius of gyration (rx)	12.64 cm	4.977 in
Radius of gyration (ry)	7.26 cm	2.858 in