L 40x20x4 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 40x20x4 (UK)

The L 40x20x4 steel profile weighs 1.8 kg/m (1.19 lb/ft), has a depth of 40 mm (1.57 in), flange width 20 mm (0.79 in). Cross-sectional area: 224 mm². Moment of inertia Ix = 3.623 cm⁴, Iy = 0.615 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	20 mm	0.79 in
Thickness (t)	4 mm	0.16 in
Weight	1.8 kg/m	1.19 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	224 mm²	0.347 in²
Moment of inertia (Ix)	3.62 cm⁴	0.09 in⁴
Moment of inertia (Iy)	0.62 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	1.44 cm³	0.088 in³
Elastic section modulus (Sy)	0.41 cm³	0.025 in³
Plastic section modulus (Zx)	2.16 cm³	0.132 in³
Plastic section modulus (Zy)	0.61 cm³	0.037 in³
Radius of gyration (rx)	1.27 cm	0.501 in
Radius of gyration (ry)	0.52 cm	0.206 in