RHS 400x200x6.3 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 400x200 cal 4 (México) · Caño estructural 400x200 (Argentina)

The RHS 400x200x6.3 steel profile weighs 57.8 kg/m (38.84 lb/ft), has a depth of 400 mm (15.75 in), flange width 200 mm (7.87 in). Cross-sectional area: 7,333.1 mm². Moment of inertia Ix = 15,602.076 cm⁴, Iy = 5,354.066 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)	9.4 mm	0.37 in
Weight	57.8 kg/m	38.84 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,333.1 mm²	11.366 in²
Moment of inertia (Ix)	15,602.08 cm⁴	374.84 in⁴
Moment of inertia (Iy)	5,354.07 cm⁴	128.63 in⁴
Elastic section modulus (Sx)	780.1 cm³	47.605 in³
Elastic section modulus (Sy)	535.41 cm³	32.673 in³
Plastic section modulus (Zx)	955.28 cm³	58.295 in³
Plastic section modulus (Zy)	592.04 cm³	36.128 in³
Radius of gyration (rx)	14.59 cm	5.743 in
Radius of gyration (ry)	8.54 cm	3.364 in