RHS 400x300x12.5 Tata Steel Celsius · Weight & Dimensions

Tata Steel Celsius · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 400x300 (México) · Caño estructural 400x300 (Argentina)

The RHS 400x300x12.5 steel profile weighs 131.0 kg/m (88.03 lb/ft), has a depth of 400 mm (15.75 in), flange width 300 mm (11.81 in). Cross-sectional area: 16,606.748 mm². Moment of inertia Ix = 38,109.05 cm⁴, Iy = 24,429.886 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	300 mm	11.81 in
Thickness (t)	12.5 mm	0.49 in
Fillet radius (r)	18.8 mm	0.74 in
Weight	131.0 kg/m	88.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,606.75 mm²	25.740 in²
Moment of inertia (Ix)	38,109.05 cm⁴	915.57 in⁴
Moment of inertia (Iy)	24,429.89 cm⁴	586.93 in⁴
Elastic section modulus (Sx)	1,905.45 cm³	116.278 in³
Elastic section modulus (Sy)	1,628.66 cm³	99.387 in³
Plastic section modulus (Zx)	2,279.18 cm³	139.085 in³
Plastic section modulus (Zy)	1,870.72 cm³	114.159 in³
Radius of gyration (rx)	15.15 cm	5.964 in
Radius of gyration (ry)	12.13 cm	4.775 in