90x90 SHS — Sizes, Dimensions & Properties

6 sizes in the 90x90 serial size group. All dimensions in mm, section properties in cm units.

DesignationMass (kg/m)D (mm)t (mm)A (cm2)I (cm4)Z (cm3)S (cm3)r (cm)
90x90x3.69.66903.612.315233.839.73.52
90x90x4.010.790413.61663743.63.5
90x90x5.013.190516.720044.4533.45
90x90x6.015.590619.823051.161.83.41
90x90x6.316.2906.320.72385364.33.4
90x90x8.020.190825.628162.677.63.32

90x90x3.6 SHS

Designation
90x90x3.6
Outside Dimension (D)
90 mm
Wall Thickness (t)
3.6 mm
Mass per Metre
9.66 kg/m
Cross-Sectional Area
12.3 cm2
Second Moment of Area I
152 cm4
Elastic Modulus Z
33.8 cm3
Plastic Modulus S
39.7 cm3
Radius of Gyration r
3.52 cm
Torsional Constant (It)
237 cm4
Surface Area per Metre
0.351 m2/m
Surface Area per Tonne
36.3 m2/t

90x90x4.0 SHS

Designation
90x90x4.0
Outside Dimension (D)
90 mm
Wall Thickness (t)
4 mm
Mass per Metre
10.7 kg/m
Cross-Sectional Area
13.6 cm2
Second Moment of Area I
166 cm4
Elastic Modulus Z
37 cm3
Plastic Modulus S
43.6 cm3
Radius of Gyration r
3.5 cm
Torsional Constant (It)
260 cm4
Surface Area per Metre
0.35 m2/m
Surface Area per Tonne
32.7 m2/t

90x90x5.0 SHS

Designation
90x90x5.0
Outside Dimension (D)
90 mm
Wall Thickness (t)
5 mm
Mass per Metre
13.1 kg/m
Cross-Sectional Area
16.7 cm2
Second Moment of Area I
200 cm4
Elastic Modulus Z
44.4 cm3
Plastic Modulus S
53 cm3
Radius of Gyration r
3.45 cm
Torsional Constant (It)
316 cm4
Surface Area per Metre
0.347 m2/m
Surface Area per Tonne
26.5 m2/t

90x90x6.0 SHS

Designation
90x90x6.0
Outside Dimension (D)
90 mm
Wall Thickness (t)
6 mm
Mass per Metre
15.5 kg/m
Cross-Sectional Area
19.8 cm2
Second Moment of Area I
230 cm4
Elastic Modulus Z
51.1 cm3
Plastic Modulus S
61.8 cm3
Radius of Gyration r
3.41 cm
Torsional Constant (It)
367 cm4
Surface Area per Metre
0.345 m2/m
Surface Area per Tonne
22.3 m2/t

90x90x6.3 SHS

Designation
90x90x6.3
Outside Dimension (D)
90 mm
Wall Thickness (t)
6.3 mm
Mass per Metre
16.2 kg/m
Cross-Sectional Area
20.7 cm2
Second Moment of Area I
238 cm4
Elastic Modulus Z
53 cm3
Plastic Modulus S
64.3 cm3
Radius of Gyration r
3.4 cm
Torsional Constant (It)
382 cm4
Surface Area per Metre
0.344 m2/m
Surface Area per Tonne
21.2 m2/t

90x90x8.0 SHS

Designation
90x90x8.0
Outside Dimension (D)
90 mm
Wall Thickness (t)
8 mm
Mass per Metre
20.1 kg/m
Cross-Sectional Area
25.6 cm2
Second Moment of Area I
281 cm4
Elastic Modulus Z
62.6 cm3
Plastic Modulus S
77.6 cm3
Radius of Gyration r
3.32 cm
Torsional Constant (It)
459 cm4
Surface Area per Metre
0.339 m2/m
Surface Area per Tonne
16.9 m2/t

90x90 SHS — Overview

The 90x90 serial size group contains 6 sections, ranging from 20.1 kg/m to 9.66 kg/m. All sections in this group share the same nominal depth and width but differ in web and flange thickness, which affects the weight and structural capacity.

Section properties are sourced from the Tata Steel Blue Book / SCI P363. For structural design to BS EN 1993-1-1 (Eurocode 3), use these properties with the appropriate partial factors from the UK National Annex.

Need Components for This Section?

Structural Steel Components supplies stiffener plates, end plates, base plates, cleats, and fixings matched to standard UK sections.

Powered by SteelSpec

Section properties from Tata Steel Blue Book / SCI P363 / BS 4-1:2005.

Shopping Basket