350x350 SHS — Sizes, Dimensions & Properties
5 sizes in the 350x350 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) |
|---|---|---|---|---|---|---|---|---|
| 350x350x8.0 | 85.4 | 350 | 8 | 109 | 21,129 | 1,207 | 1,392 | 13.9 |
| 350x350x10.0 | 106 | 350 | 10 | 135 | 25,884 | 1,479 | 1,715 | 13.9 |
| 350x350x12.0 | 126 | 350 | 12 | 161 | 30,435 | 1,739 | 2,030 | 13.8 |
| 350x350x12.5 | 131 | 350 | 12.5 | 167 | 31,541 | 1,802 | 2,107 | 13.7 |
| 350x350x16.0 | 166 | 350 | 16 | 211 | 38,942 | 2,225 | 2,630 | 13.6 |
350x350x8.0 SHS
- Designation
- 350x350x8.0
- Outside Dimension (D)
- 350 mm
- Wall Thickness (t)
- 8 mm
- Mass per Metre
- 85.4 kg/m
- Cross-Sectional Area
- 109 cm2
- Second Moment of Area I
- 21,129 cm4
- Elastic Modulus Z
- 1,207 cm3
- Plastic Modulus S
- 1,392 cm3
- Radius of Gyration r
- 13.9 cm
- Torsional Constant (It)
- 32,384 cm4
- Surface Area per Metre
- 1.38 m2/m
- Surface Area per Tonne
- 16.2 m2/t
350x350x10.0 SHS
- Designation
- 350x350x10.0
- Outside Dimension (D)
- 350 mm
- Wall Thickness (t)
- 10 mm
- Mass per Metre
- 106 kg/m
- Cross-Sectional Area
- 135 cm2
- Second Moment of Area I
- 25,884 cm4
- Elastic Modulus Z
- 1,479 cm3
- Plastic Modulus S
- 1,715 cm3
- Radius of Gyration r
- 13.9 cm
- Torsional Constant (It)
- 39,886 cm4
- Surface Area per Metre
- 1.37 m2/m
- Surface Area per Tonne
- 12.9 m2/t
350x350x12.0 SHS
- Designation
- 350x350x12.0
- Outside Dimension (D)
- 350 mm
- Wall Thickness (t)
- 12 mm
- Mass per Metre
- 126 kg/m
- Cross-Sectional Area
- 161 cm2
- Second Moment of Area I
- 30,435 cm4
- Elastic Modulus Z
- 1,739 cm3
- Plastic Modulus S
- 2,030 cm3
- Radius of Gyration r
- 13.8 cm
- Torsional Constant (It)
- 47,154 cm4
- Surface Area per Metre
- 1.37 m2/m
- Surface Area per Tonne
- 10.9 m2/t
350x350x12.5 SHS
- Designation
- 350x350x12.5
- Outside Dimension (D)
- 350 mm
- Wall Thickness (t)
- 12.5 mm
- Mass per Metre
- 131 kg/m
- Cross-Sectional Area
- 167 cm2
- Second Moment of Area I
- 31,541 cm4
- Elastic Modulus Z
- 1,802 cm3
- Plastic Modulus S
- 2,107 cm3
- Radius of Gyration r
- 13.7 cm
- Torsional Constant (It)
- 48,934 cm4
- Surface Area per Metre
- 1.37 m2/m
- Surface Area per Tonne
- 10.5 m2/t
350x350x16.0 SHS
- Designation
- 350x350x16.0
- Outside Dimension (D)
- 350 mm
- Wall Thickness (t)
- 16 mm
- Mass per Metre
- 166 kg/m
- Cross-Sectional Area
- 211 cm2
- Second Moment of Area I
- 38,942 cm4
- Elastic Modulus Z
- 2,225 cm3
- Plastic Modulus S
- 2,630 cm3
- Radius of Gyration r
- 13.6 cm
- Torsional Constant (It)
- 60,990 cm4
- Surface Area per Metre
- 1.36 m2/m
- Surface Area per Tonne
- 8.2 m2/t
350x350 SHS — Overview
The 350x350 serial size group contains 5 sections, ranging from 166 kg/m to 85.4 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.