RHS 400x200x6.3 Tata Steel Hybox · Weight & Dimensions

Tata Steel Hybox · 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 400x200 cal 4 (México) · Caño estructural 400x200 (Argentina)

The RHS 400x200x6.3 steel profile weighs 57.0 kg/m (38.30 lb/ft), has a depth of 400 mm (15.75 in), flange width 200 mm (7.87 in). Cross-sectional area: 7,264.959 mm². Moment of inertia Ix = 15,329.737 cm⁴, Iy = 5,286.104 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.3 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	200 mm	7.87 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	57.0 kg/m	38.30 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,264.96 mm²	11.261 in²
Moment of inertia (Ix)	15,329.74 cm⁴	368.30 in⁴
Moment of inertia (Iy)	5,286.1 cm⁴	127.00 in⁴
Elastic section modulus (Sx)	766.49 cm³	46.774 in³
Elastic section modulus (Sy)	528.61 cm³	32.258 in³
Plastic section modulus (Zx)	941.66 cm³	57.464 in³
Plastic section modulus (Zy)	585.22 cm³	35.713 in³
Radius of gyration (rx)	14.53 cm	5.719 in
Radius of gyration (ry)	8.53 cm	3.358 in