L 20x20x4 IS · Weight & Dimensions

IS, hot-rolled sections · Angle Section

Angle sections (L shapes) are used for bracing, connections, lintels, and built-up members. Available in equal and unequal leg configurations.

Also known as: RSA 20x20x4 (UK)

The L 20x20x4 steel profile weighs 1.1 kg/m (0.77 lb/ft), has a depth of 20 mm (0.79 in), flange width 20 mm (0.79 in). Cross-sectional area: 144 mm². Moment of inertia Ix = 0.503 cm⁴, Iy = 0.503 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	20 mm	0.79 in
Width (b)	20 mm	0.79 in
Thickness (t)	4 mm	0.16 in
Weight	1.1 kg/m	0.77 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	144 mm²	0.223 in²
Moment of inertia (Ix)	0.5 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.5 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.37 cm³	0.023 in³
Elastic section modulus (Sy)	0.37 cm³	0.023 in³
Plastic section modulus (Zx)	0.56 cm³	0.034 in³
Plastic section modulus (Zy)	0.56 cm³	0.034 in³
Radius of gyration (rx)	0.59 cm	0.233 in
Radius of gyration (ry)	0.59 cm	0.233 in