88.9 CHS — Sizes, Dimensions & Properties
6 sizes in the 88.9 serial size group. All dimensions in mm, section properties in cm units.
| Designation | Mass (kg/m) | D (mm) | t (mm) | A (cm2) | I (cm4) | Z (cm3) | S (cm3) | r (cm) |
|---|---|---|---|---|---|---|---|---|
| 88.9x3.0 | 6.36 | 88.9 | 3 | 8.1 | 74.8 | 16.8 | 22.1 | 3.04 |
| 88.9x3.2 | 6.76 | 88.9 | 3.2 | 8.62 | 79.2 | 17.8 | 23.5 | 3.03 |
| 88.9x3.5 | 7.37 | 88.9 | 3.5 | 9.39 | 85.7 | 19.3 | 25.5 | 3.02 |
| 88.9x4.0 | 8.38 | 88.9 | 4 | 10.7 | 96.3 | 21.7 | 28.9 | 3 |
| 88.9x5.0 | 10.3 | 88.9 | 5 | 13.2 | 116 | 26.2 | 35.2 | 2.97 |
| 88.9x6.3 | 12.8 | 88.9 | 6.3 | 16.3 | 140 | 31.5 | 43.1 | 2.93 |
88.9x3.0 CHS
- Designation
- 88.9x3.0
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 3 mm
- Mass per Metre
- 6.36 kg/m
- Cross-Sectional Area
- 8.1 cm2
- Second Moment of Area I
- 74.8 cm4
- Elastic Modulus Z
- 16.8 cm3
- Plastic Modulus S
- 22.1 cm3
- Radius of Gyration r
- 3.04 cm
- Torsional Constant (It)
- 150 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 43.9 m2/t
88.9x3.2 CHS
- Designation
- 88.9x3.2
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 3.2 mm
- Mass per Metre
- 6.76 kg/m
- Cross-Sectional Area
- 8.62 cm2
- Second Moment of Area I
- 79.2 cm4
- Elastic Modulus Z
- 17.8 cm3
- Plastic Modulus S
- 23.5 cm3
- Radius of Gyration r
- 3.03 cm
- Torsional Constant (It)
- 158 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 41.3 m2/t
88.9x3.5 CHS
- Designation
- 88.9x3.5
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 3.5 mm
- Mass per Metre
- 7.37 kg/m
- Cross-Sectional Area
- 9.39 cm2
- Second Moment of Area I
- 85.7 cm4
- Elastic Modulus Z
- 19.3 cm3
- Plastic Modulus S
- 25.5 cm3
- Radius of Gyration r
- 3.02 cm
- Torsional Constant (It)
- 171 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 37.9 m2/t
88.9x4.0 CHS
- Designation
- 88.9x4.0
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 4 mm
- Mass per Metre
- 8.38 kg/m
- Cross-Sectional Area
- 10.7 cm2
- Second Moment of Area I
- 96.3 cm4
- Elastic Modulus Z
- 21.7 cm3
- Plastic Modulus S
- 28.9 cm3
- Radius of Gyration r
- 3 cm
- Torsional Constant (It)
- 193 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 33.3 m2/t
88.9x5.0 CHS
- Designation
- 88.9x5.0
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 5 mm
- Mass per Metre
- 10.3 kg/m
- Cross-Sectional Area
- 13.2 cm2
- Second Moment of Area I
- 116 cm4
- Elastic Modulus Z
- 26.2 cm3
- Plastic Modulus S
- 35.2 cm3
- Radius of Gyration r
- 2.97 cm
- Torsional Constant (It)
- 233 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 27 m2/t
88.9x6.3 CHS
- Designation
- 88.9x6.3
- Outside Diameter (D)
- 88.9 mm
- Wall Thickness (t)
- 6.3 mm
- Mass per Metre
- 12.8 kg/m
- Cross-Sectional Area
- 16.3 cm2
- Second Moment of Area I
- 140 cm4
- Elastic Modulus Z
- 31.5 cm3
- Plastic Modulus S
- 43.1 cm3
- Radius of Gyration r
- 2.93 cm
- Torsional Constant (It)
- 280 cm4
- Surface Area per Metre
- 0.279 m2/m
- Surface Area per Tonne
- 21.8 m2/t
88.9 CHS — Overview
The 88.9 serial size group contains 6 sections, ranging from 12.8 kg/m to 6.36 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.