406.4 CHS — Sizes, Dimensions & Properties
8 sizes in the 406.4 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) |
|---|---|---|---|---|---|---|---|---|
| 406.4x6.0 | 59.2 | 406.4 | 6 | 75.5 | 15,100 | 745 | 962 | 14.2 |
| 406.4x6.3 | 62.2 | 406.4 | 6.3 | 79.2 | 15,800 | 780 | 1,010 | 14.1 |
| 406.4x8.0 | 78.6 | 406.4 | 8 | 100 | 19,900 | 978 | 1,270 | 14.1 |
| 406.4x10.0 | 97.8 | 406.4 | 10 | 125 | 24,500 | 1,210 | 1,570 | 14 |
| 406.4x12.0 | 117 | 406.4 | 12 | 149 | 28,900 | 1,420 | 1,870 | 14 |
| 406.4x12.5 | 121 | 406.4 | 12.5 | 155 | 30,000 | 1,480 | 1,940 | 13.9 |
| 406.4x14.2 | 137 | 406.4 | 14.2 | 175 | 33,700 | 1,660 | 2,190 | 13.9 |
| 406.4x16.0 | 154 | 406.4 | 16 | 196 | 37,400 | 1,840 | 2,440 | 13.8 |
406.4x6.0 CHS
- Designation
- 406.4x6.0
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 6 mm
- Mass per Metre
- 59.2 kg/m
- Cross-Sectional Area
- 75.5 cm2
- Second Moment of Area I
- 15,100 cm4
- Elastic Modulus Z
- 745 cm3
- Plastic Modulus S
- 962 cm3
- Radius of Gyration r
- 14.2 cm
- Torsional Constant (It)
- 30,300 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 21.5 m2/t
406.4x6.3 CHS
- Designation
- 406.4x6.3
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 6.3 mm
- Mass per Metre
- 62.2 kg/m
- Cross-Sectional Area
- 79.2 cm2
- Second Moment of Area I
- 15,800 cm4
- Elastic Modulus Z
- 780 cm3
- Plastic Modulus S
- 1,010 cm3
- Radius of Gyration r
- 14.1 cm
- Torsional Constant (It)
- 31,700 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 20.5 m2/t
406.4x8.0 CHS
- Designation
- 406.4x8.0
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 8 mm
- Mass per Metre
- 78.6 kg/m
- Cross-Sectional Area
- 100 cm2
- Second Moment of Area I
- 19,900 cm4
- Elastic Modulus Z
- 978 cm3
- Plastic Modulus S
- 1,270 cm3
- Radius of Gyration r
- 14.1 cm
- Torsional Constant (It)
- 39,700 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 16.2 m2/t
406.4x10.0 CHS
- Designation
- 406.4x10.0
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 10 mm
- Mass per Metre
- 97.8 kg/m
- Cross-Sectional Area
- 125 cm2
- Second Moment of Area I
- 24,500 cm4
- Elastic Modulus Z
- 1,210 cm3
- Plastic Modulus S
- 1,570 cm3
- Radius of Gyration r
- 14 cm
- Torsional Constant (It)
- 49,000 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 13.1 m2/t
406.4x12.0 CHS
- Designation
- 406.4x12.0
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 12 mm
- Mass per Metre
- 117 kg/m
- Cross-Sectional Area
- 149 cm2
- Second Moment of Area I
- 28,900 cm4
- Elastic Modulus Z
- 1,420 cm3
- Plastic Modulus S
- 1,870 cm3
- Radius of Gyration r
- 14 cm
- Torsional Constant (It)
- 57,900 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 10.9 m2/t
406.4x12.5 CHS
- Designation
- 406.4x12.5
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 12.5 mm
- Mass per Metre
- 121 kg/m
- Cross-Sectional Area
- 155 cm2
- Second Moment of Area I
- 30,000 cm4
- Elastic Modulus Z
- 1,480 cm3
- Plastic Modulus S
- 1,940 cm3
- Radius of Gyration r
- 13.9 cm
- Torsional Constant (It)
- 60,100 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 10.5 m2/t
406.4x14.2 CHS
- Designation
- 406.4x14.2
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 14.2 mm
- Mass per Metre
- 137 kg/m
- Cross-Sectional Area
- 175 cm2
- Second Moment of Area I
- 33,700 cm4
- Elastic Modulus Z
- 1,660 cm3
- Plastic Modulus S
- 2,190 cm3
- Radius of Gyration r
- 13.9 cm
- Torsional Constant (It)
- 67,400 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 9.3 m2/t
406.4x16.0 CHS
- Designation
- 406.4x16.0
- Outside Diameter (D)
- 406.4 mm
- Wall Thickness (t)
- 16 mm
- Mass per Metre
- 154 kg/m
- Cross-Sectional Area
- 196 cm2
- Second Moment of Area I
- 37,400 cm4
- Elastic Modulus Z
- 1,840 cm3
- Plastic Modulus S
- 2,440 cm3
- Radius of Gyration r
- 13.8 cm
- Torsional Constant (It)
- 74,900 cm4
- Surface Area per Metre
- 1.28 m2/m
- Surface Area per Tonne
- 8.29 m2/t
406.4 CHS — Overview
The 406.4 serial size group contains 8 sections, ranging from 154 kg/m to 59.2 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.
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Section properties from Tata Steel Blue Book / SCI P363 / BS 4-1:2005.