300x300 SHS — Sizes, Dimensions & Properties
7 sizes in the 300x300 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) |
|---|---|---|---|---|---|---|---|---|
| 300x300x6.0 | 55.1 | 300 | 6 | 70.2 | 10,080 | 672 | 772 | 12 |
| 300x300x6.3 | 57.8 | 300 | 6.3 | 73.6 | 10,547 | 703 | 809 | 12 |
| 300x300x8.0 | 72.8 | 300 | 8 | 92.8 | 13,128 | 875 | 1,013 | 11.9 |
| 300x300x10.0 | 90.2 | 300 | 10 | 115 | 16,026 | 1,068 | 1,246 | 11.8 |
| 300x300x12.0 | 107 | 300 | 12 | 137 | 18,777 | 1,252 | 1,470 | 11.7 |
| 300x300x12.5 | 112 | 300 | 12.5 | 142 | 19,442 | 1,296 | 1,525 | 11.7 |
| 300x300x16.0 | 141 | 300 | 16 | 179 | 23,850 | 1,590 | 1,895 | 11.5 |
300x300x6.0 SHS
- Designation
- 300x300x6.0
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 6 mm
- Mass per Metre
- 55.1 kg/m
- Cross-Sectional Area
- 70.2 cm2
- Second Moment of Area I
- 10,080 cm4
- Elastic Modulus Z
- 672 cm3
- Plastic Modulus S
- 772 cm3
- Radius of Gyration r
- 12 cm
- Torsional Constant (It)
- 15,407 cm4
- Surface Area per Metre
- 1.18 m2/m
- Surface Area per Tonne
- 21.4 m2/t
300x300x6.3 SHS
- Designation
- 300x300x6.3
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 6.3 mm
- Mass per Metre
- 57.8 kg/m
- Cross-Sectional Area
- 73.6 cm2
- Second Moment of Area I
- 10,547 cm4
- Elastic Modulus Z
- 703 cm3
- Plastic Modulus S
- 809 cm3
- Radius of Gyration r
- 12 cm
- Torsional Constant (It)
- 16,136 cm4
- Surface Area per Metre
- 1.18 m2/m
- Surface Area per Tonne
- 20.4 m2/t
300x300x8.0 SHS
- Designation
- 300x300x8.0
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 8 mm
- Mass per Metre
- 72.8 kg/m
- Cross-Sectional Area
- 92.8 cm2
- Second Moment of Area I
- 13,128 cm4
- Elastic Modulus Z
- 875 cm3
- Plastic Modulus S
- 1,013 cm3
- Radius of Gyration r
- 11.9 cm
- Torsional Constant (It)
- 20,194 cm4
- Surface Area per Metre
- 1.18 m2/m
- Surface Area per Tonne
- 16.2 m2/t
300x300x10.0 SHS
- Designation
- 300x300x10.0
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 10 mm
- Mass per Metre
- 90.2 kg/m
- Cross-Sectional Area
- 115 cm2
- Second Moment of Area I
- 16,026 cm4
- Elastic Modulus Z
- 1,068 cm3
- Plastic Modulus S
- 1,246 cm3
- Radius of Gyration r
- 11.8 cm
- Torsional Constant (It)
- 24,807 cm4
- Surface Area per Metre
- 1.17 m2/m
- Surface Area per Tonne
- 13 m2/t
300x300x12.0 SHS
- Designation
- 300x300x12.0
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 12 mm
- Mass per Metre
- 107 kg/m
- Cross-Sectional Area
- 137 cm2
- Second Moment of Area I
- 18,777 cm4
- Elastic Modulus Z
- 1,252 cm3
- Plastic Modulus S
- 1,470 cm3
- Radius of Gyration r
- 11.7 cm
- Torsional Constant (It)
- 29,249 cm4
- Surface Area per Metre
- 1.17 m2/m
- Surface Area per Tonne
- 10.9 m2/t
300x300x12.5 SHS
- Designation
- 300x300x12.5
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 12.5 mm
- Mass per Metre
- 112 kg/m
- Cross-Sectional Area
- 142 cm2
- Second Moment of Area I
- 19,442 cm4
- Elastic Modulus Z
- 1,296 cm3
- Plastic Modulus S
- 1,525 cm3
- Radius of Gyration r
- 11.7 cm
- Torsional Constant (It)
- 30,333 cm4
- Surface Area per Metre
- 1.17 m2/m
- Surface Area per Tonne
- 10.4 m2/t
300x300x16.0 SHS
- Designation
- 300x300x16.0
- Outside Dimension (D)
- 300 mm
- Wall Thickness (t)
- 16 mm
- Mass per Metre
- 141 kg/m
- Cross-Sectional Area
- 179 cm2
- Second Moment of Area I
- 23,850 cm4
- Elastic Modulus Z
- 1,590 cm3
- Plastic Modulus S
- 1,895 cm3
- Radius of Gyration r
- 11.5 cm
- Torsional Constant (It)
- 37,622 cm4
- Surface Area per Metre
- 1.16 m2/m
- Surface Area per Tonne
- 8.2 m2/t
300x300 SHS — Overview
The 300x300 serial size group contains 7 sections, ranging from 141 kg/m to 55.1 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.